Location: Warsaw; Minsk; Chișinău; Belgrade
Workplace: remote
We’re looking for a Lead Java Engineer to help us build and scale a cloud PBX solution.
We expect you to have strong problem-solving skills, be self-motivated, initiative, and responsible.
Your daily duties will include implementing different SIP proxy features using Java/C , with respect to high availability and scalability.
Responsibilities:
Collaborate with business stakeholders and actively participate in product planning and sprint backlog meetings.
Take responsibility for the full software development lifecycle, from understanding business requirements through coding, deployment, and maintenance.
Develop and maintain technical design, architecture, and troubleshooting documentation.
Demonstrate a technology-agnostic mindset and continuously explore new technologies and approaches.
Analyze and interpret stack traces, crashes, memory issues, and performance bottlenecks.
Implement patches, backports, or enhancements directly in Asterisk source code.
Develop custom modules (C), when needed.
Work with Linux systems (systemd, networking, tuning, kernel parameters).
Work with cloud environments (GCP preferred).
Participate in architecture decisions.
Design and implement Asterisk dialplans.
Requirements:
Have at least 7+ years of production experience with large-scale deployments.
Strong hands-on experience with
Java.
Have experience with CI/CD, clouds, Linux & networking.
Experience with CI/CD tools such as GitHub Actions, Jenkins, ArgoCD, and Maven.
Proficiency with relational databases, particularly MySQL, including schema design, migrations, and query optimization.
Have a good level of English (B2 or higher).
You are ready to act as the technical lead.
Can work cross-team with backend developers, infra/DevOps, QA, and product owners.
Own best practices, code quality, and documentation.
Hands-on experience with C - Nice to have!
We are pleased to offer:
Remote work as b2b contractor or on-site/hybrid employment (Belarus-Moldova) work opportunity!
Stable job with long-term growth perspective.
Competitive salary with annual performance review.
Really good hardware.
An exciting and challenging job with talented people around.
Continuous learning and career growth opportunities.
Compensation for professional training, seminars, and conferences.
Referral program – get rewarded for helping us grow the team with talented people.
Company-supported English classes to enhance your professional growth.
More perks for the Minsk and Chisinau office employees.
A few words about us:
IDT Corporation is a global communications company founded in 1990 and headquartered in Newark, New Jersey. We are industry leaders in prepaid communication and payment services and one of the largest international voice carriers. We are listed on the NYSE, employ over 1800 people across 20 countries, and have over $1.5 billion in revenues.
We are not ”another big IT corporation”— we encourage and support in-house entrepreneurs in developing their ideas into business actions.
Net2Phone is a rapidly growing global provider of unified cloud communications solutions. It solves the problem of cost optimization for businesses in more than 50 countries, providing them with high-quality VoIP services. Net2Phone provides businesses with an integrated communications suite featuring powerful collaboration tools such as voice, messaging, chat, and unlimited domestic and international calling to 23+ countries.
The product was named ‘VoIP Supplier of the Year’ by the Telecom Consulting Group in 2018.
Simple Life is the #1 AI-powered health coaching app for adults who want to lose weight and enjoy a healthier lifestyle—without the stress or extremes. Our mission is to empower people to feel their best every day. By challenging traditional, restrictive approaches, Simple offers a more sustainable method grounded in ease, personalization, and real-life support. Simple has had over 17 million downloads and more than 300,000 5-star reviews, having helped millions lose weight successfully and sustainably. Simple has earned recognition as Best Virtual Coach and one of the Top 100 AI companies — all thanks to a dedicated global team driving real impact. With SIMPLE as a partner in their pocket, users feel cared for and empowered to embrace — and stick to — new healthy habits.
Simple is looking for a Senior Data Engineer to join our Tech team. Push the pace of innovation and build a future of a healthier world with us!
Задачи:
— Design, build, and maintain streaming pipelines.
— Develop custom ingestion pipelines from third-party APIs, webhooks, and SDKs.
— Migrate existing data ingestion pipelines from SaaS tools to our own infrastructure.
— Deliver data to the raw layer of our Snowflake warehouse with schema consistency, idempotency, and resilience to malformed or late data.
— Evolve the existing AWS streaming stack (Kinesis, SQS, Lambda, API Gateway), improving cost efficiency, observability, and resilience.
— Maintain infrastructure as code (Terraform) for ingestion and processing resources.
— Monitor pipelines, troubleshoot, and resolve incidents.
— Contribute to our ongoing work on safe data access for AI agents and tooling.
— Continuously improve ingestion architecture, tooling, and engineering practices.
Требования:
— 5+ years of commercial Python experience in a backend or data engineering role.
— Solid understanding of distributed systems architecture, including load balancing, sharding, and trade-offs between synchronous and asynchronous processing.
— Hands-on experience with cloud services, preferably AWS (Lambda, API Gateway, containers in ECS/EKS).
— Experience building streaming pipelines (Kinesis, SQS, or equivalents).
— Experience with infrastructure as code (Terraform or equivalents).
— Working knowledge of SQL: ability to read and write queries, including joins and window functions.
— Commercial experience with real-world production data: ability to design systems that gracefully handle messy, duplicated, delayed, or malformed input.
— Solid understanding of how data flows through production systems, including the ability to anticipate and prevent downstream issues.
— Operational mindset: comfortable owning production systems and monitoring them.
— Ability to make architectural decisions independently and review the work of teammates.
Желательно:
— Strong SQL and data modeling skills.
— Experience with Snowflake and dbt.
— Experience with workflow orchestrators (Airflow, Dagster, Prefect, or equivalents).
— Experience working with analytics and product teams as a data provider.
— Experience working with sensitive or regulated data.
Условия:
— Open-minded teams, a welcoming and inclusive company culture.
— Competitive salary package based on expertise, skillset, and impact plus stock options.
— In-office, remote and hybrid work opportunities.
— Equipment needed for productivity.
— Premium SIMPLE subscription.
— 21 days annual leave plus bank holidays.
— Flexible hours focusing on results, not desk time.
О компании и ценностях:
— Data-driven decision making.
— Focus on impact and speed.
— Ownership and responsibility.
— Encouragement to push limits and innovate.
— Team accountability and collaboration.
Location: Auckland
Workplace: OnSite
ABOUT HALTER
At Halter, we’re on a mission to enable farmers and graziers to run the most productive and sustainable operations. Our customers are using Halter to break free from the time-intensive constraints of conventional practices. Imagine watching 500 cattle stand up and walk calmly towards their next break? No quad bikes, no dogs, no fences. Just a group of cattle walking at their own pace. People say it looks like magic. Our customers are revolutionizing grazing with Halter. It's changing lives and transforming an industry. People join Halter to do meaningful work. By joining us you’ll be solving challenging problems within a talented team and a culture built for high performance. Our team out-think, out-work and out-care. We’re committed to delivering real change in the world - this isn’t easy, and in truth, we love that it’s hard.
We’re backed to deliver on a mission that matters by Tier 1 investors including Founders Fund https://foundersfund.com, Bessemer Venture Partners https://www.bvp.com/, BOND, https://www.bondcap.com/ DCVC https://www.dcvc.com/, Blackbird https://www.blackbird.vc/, Promus Ventures https://www.promusventures.com/, Rocket Lab’s Peter Beck and Icehouse ventures https://www.icehouseventures.co.nz/?utm_term=icehouse%20ventures&utm_campaign=Brand+Keywords&utm_source=adwords&utm_medium=ppc&hsa_acc=4064636360&hsa_cam=16902737884&hsa_grp=134004309485&hsa_ad=592971340272&hsa_src=g&hsa_tgt=kwd-1082530126230&hsa_kw=icehouse%20ventures&hsa_mt=b&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw2v-gBhC1ARIsAOQdKY0J0DepRVFDmjQlAkJPbZuQnLSA5UVzUzOXYiPxkjX-SeVa513_BhkaAr-MEALw_wcB.
To find out more, visit our LinkedIn https://www.linkedin.com/company/halter-limited & Instagram https://www.instagram.com/lifeathalter/.
ABOUT THE ROLE
Halter is one system: hardware, software, and AI, running live on real farms. Our platform is what turns that ambitious engineering into farmer and rancher impact. Every collar on every cow, every grazing break a farmer sets, and every alert a vet acts on depends on infrastructure that's reliable, secure, and easy for our engineers to build on. As Halter grows globally and our systems handle billions of daily events from the paddock, the platform underneath needs to scale with us - without slowing anyone down.
We're looking for a Senior Engineer to join our Platform team and help build, run, and evolve the systems that everything else at Halter sits on. You'll bring deep technical expertise to a small team, play a meaningful role in shaping how a fast-growing engineering organisation thinks about cloud infrastructure, developer experience, security, and AI-assisted engineering, and have the autonomy to own significant pieces of the work end-to-end.
Day-to-day you'll work closely with engineering teams across the business - backend, ML, and data - to make sure the platform accelerates their velocity rather than gating it. Whether it's evolving our internal AI tooling into something the whole org relies on, building golden paths that make the right thing the easy thing, hardening our cloud security posture, or keeping our collar-to-cloud pipeline rock-solid as we scale, you'll own problems end-to-end. If you want your work to multiply the impact of every other engineer at Halter, this is the role.
WHAT YOU'LL DO
- Help shape how Halter leverages AI tooling to accelerate development. We've already invested in internal AI infrastructure that engineers rely on day-to-day, and you'll help it grow from an engineering-team tool into something the whole org leans on - contributing to the adoption patterns, the guardrail to the force-multiplier use cases.
- Build out the tooling, guardrails, and golden paths that make it easy for other engineers to ship safely and quickly. The right paved roads multiply every engineer's impact, and you'll shape where ours go next.
- Contribute to the technical direction for our cloud infrastructure as Halter scales globally, helping make the architecture decisions that balance velocity, cost, reliability, and operational simplicity.
- Bake security into the platform through guardrails and sensible defaults across IAM, network policy, secrets management, and supply chain, so the secure path is also the easy path for every team.
- Keep our core compute and orchestration layer reliable at the scale farmers and ranchers depend on, day in and day out.
- Drive observability and incident tooling forward, treating on-call as a signal rather than a cost. Engineers should be able to detect, diagnose, and resolve issues before they reach farmers and ranchers.
- Automate infrastructure management through Infrastructure-as-Code, CI/CD pipelines, and internal tooling that reduces operational load over time.
- Contribute to cross-functional architecture discussions and help evolve platform practices and standards, balancing pragmatic delivery with long-term maintainability.
- Mentor and grow other engineers through design conversations, code reviews, and generous context sharing.
- Be part of an on-call rotation, working with a highly skilled team to resolve incidents and put preventative measures in place.
YOU'LL BE GREAT IF YOU:
- Have deep experience building and operating AWS at scale, with strong fluency in container orchestration, cloud networking, and Infrastructure-as-Code. Terraform at scale is a big plus.
- Have shipped meaningful platform or infrastructure work in a production environment, ideally in a high-growth setting.
- Understand what good developer experience looks like, and have built golden paths, paved roads, or internal platforms that engineers reach for instead of rolling their own.
- Treat security as a first-class part of platform engineering, not an afterthought, and have hands-on experience hardening cloud environments.
- Are excited about how AI tooling can change the way engineering teams work, and have a point of view on where it adds leverage versus where it adds risk. Bonus if you've built an AI agent or AI-assisted tooling in production - we have internal AI infrastructure of our own, and we'll want your take on where it goes next.
- Understand how to build systems that are observable, testable, and easy to debug at scale.
- Are a strong communicator who collaborates well across teams, raising the bar on practices through clear writing, thoughtful design conversations, and code review.
- Stay calm under pressure, have a low ego, and lift the people around you through clear communication and generous knowledge sharing.
- Embrace ambiguity. The biggest platform problems rarely come with a clear spec, and you're comfortable navigating uncertainty and making pragmatic calls.
- Have backend product development experience (a plus) - it helps you understand how engineers build products and what they need from the platform underneath them.
- A degree in software engineering (or equivalent) is nice to have, but not essential.
WHY OUR TEAM LOVES WORKING AT HALTER ❤️
- We are New Zealand's fastest growing company.
- Dedicate yourself to solving real-world problems alongside an epic team in a culture designed around growth.
- A genuine and shared connection to our mission to make a difference in the world.
- The pride of joining an iconic New Zealand technology company. The excitement, risk, and reward of a high-growth technology scale-up on the global stage.
- Our ideas are truly valued, we are able to move fast, and our impact is real.
- State-of-the-art, dog-friendly office that's been thoughtfully designed right in the heart of Auckland city. Did we mention dogs and cows?
- Healthy body, healthy mind. We're partnered with Southern Cross Health Insurance to support your well-being.
- We offer 6 months of fully paid parental leave for primary caregivers, 4 weeks of fully paid secondary caregiver leave and many other parental benefits that support you and your family.
- Our personal growth is important. Halter offers an annual $1000 self-development budget to be used for anything that fuels personal growth.
- Our time to recharge is valued, we're offered wellness leave and unlimited paid annual leave.
- We offer an inclusive and attractive remuneration package made up of salary, benefits and an employee stock ownership plan.
JOIN OUR TEAM
Halter is committed to promoting a diverse and inclusive workplace — a place where we can each be ourselves and do the best work of our lives. Research shows that while men apply to jobs when they meet an average of 60% of the requirements, women and under-represented groups of candidates tend to only apply when they meet every requirement. If you think you have what it takes but don’t necessarily tick every requirement on this job description, please still get in touch and apply to Halter. We’d love to chat to see if you’ll be an epic fit!
If this opportunity sounds like you, please apply below by sending through your cover letter explaining why you’re excited about this role and working at Halter, along with your CV, and we’ll be in touch!
Please also feel free to check out the careers page https://www.halterhq.com/careers for more information on working at Halter and don't forget to follow us on LinkedIn https://www.linkedin.com/company/halter-limited & Instagram https://www.instagram.com/lifeathalter/.
WHY OUR TEAM LOVES WORKING AT HALTER:
- Work that genuinely matters. Every now and again a company comes along that transforms an entire industry and leaves the world in a better place. Our team gets to be part of something truly meaningful, helping farmers improve their livelihoods, spend more time with their families, and build more sustainable operations.
- Spectacular people solving hard problems. Our culture is designed for talented people to do work that changes lives. The team is filled with diverse, kind, and driven people who push each other to do their best work. You'll be thrown into the deep end, tackling complex challenges and building something tangible that solves real problems.
- You'll grow here. Autonomy, mastery, and learning define how we work. You'll have the freedom to work on interesting problems, master new skills, and continuously develop yourself, both through your role and our personal growth fund.
- This isn't easy, and we love that it's hard. Working at Halter will be the most rewarding and the most challenging work of your life. We move fast, take bold bets, and work hard to reshape an entire industry. As one team member put it: "Joining Halter is a bit like strapping yourself to a rocket ship, but it's an epic journey to be a part of!"
Location: Nicosia
Job Overview
We are looking for a
Senior Performance QA Engineer
with experience in GameDev
to join our World of Warships PC team.
This position is open in our Belgrade or Nicosia office
.
In this role, you’ll focus on performance testing and automation, helping us identify performance bottlenecks and ensure a smooth and stable experience for our players. You’ll work closely with QA and development teams to investigate, analyze, and improve game performance.
If you’re enjoy sharing your expertise and learning from others, and want to contribute to the quality of a large-scale PC game, we’d love to hear from you.
Reports to
Lead Automation QA Engineer
What will you do?
Develop and maintain automated tests for functional, performance, and stability testing on Python
Develop and maintain core functionality of the automation framework
Analyze automated test results and investigate failures
Performance testing and profiling of game client and backend services
Maintain documentation for existing automated tests, frameworks, and tools
Collaborate with other teams and provide support based on automated test results
Participate in the development and maintenance of CI/CD pipelines and related tools
Work with different teams as internal customers, understand their needs, and provide automation solutions
Participate in code reviews and contribute to improving automation code quality
What are we looking for?
3+ years of experience in Performance Testing or Performance QA
3+ years of experience in Automation QA or a similar position
1+ year of commercial experience in Python-based automated testing, including writing performance test suites using pytest
Experience in Performance testing tools and frameworks (k6, load testing, profiling tools)
Experience in analyzing and optimizing game performance (PC games)
Experience with Elasticsearch for log collection and analysis
Experience with CI/CD systems (Jenkins, TeamCity)
Knowledge of PC architecture basics and component interaction (CPU, GPU, memory, disk I/O)
Understanding of performance metrics: FPS, frame time, CPU/GPU utilization, memory consumption
Knowledge of the theory and methods of software testing and performance testing methodologies
Upper-Intermediate (B2) or higher English knowledge
What additional skills will help you stand out?
Experience in game development or game engines (Unreal, Unity)
Experience in log parsing and data analysis with pandas and NumPy
Experience in Python profiling and optimization (cProfile, line_profiler)
Experience with PostgreSQL performance analysis and query optimization
Experience in Docker, docker-compose
Experience in monitoring tools (Grafana, Prometheus)
Experience with Python async/await and multiprocessing
Experience in designing and maintaining performance test infrastructure
Experience in Linux-based systems
Mentoring experience in QA team
Work mode
This position is open in our Belgrade or Nicosia office
During the probation period: onsite work
After the probation period: onsite or hybrid (3 days per week in the office)
This role is eligible for relocation & immigration support
Benefits
Benefits and perks are tailored to the local market and culture. Our benefits in Nicosia include:
21 days annual leave (additional days based on years of service: up to 25 days)
Additional paid time off (5 Personal Days, Birthday Leave, Marriage Leave, Compassionate Leave)
Sick Leave (10 days top-up to statutory allowance per year)
Maternity Leave (18 weeks top-up to statutory allowance per case)
Career development and education opportunities within the company
English Language courses fully covered by the company upon Manager’s approval
Private Health Care
Mental well-being program (iFeel)
Onsite gym and spa
Free parking close to the Nicosia offices, based on availability
Free drinks-equipped kitchen in every floor building
Eurobank benefits (if applicable)
Employee discounts (e.g. restaurants, bars, etc.)
Personal Gaming Account
Onsite canteen with subsidized prices for food and drinks
Company events, Social Clubs
Seniority Awards
Referral program - You can recommend the best talents to the company and receive a reward
Please submit your CV in English to ensure smooth processing and review.
About Wargaming
Wargaming is an award-winning online game developer and publisher headquartered in Nicosia, Cyprus. Operating since 1998, Wargaming has become one of the leaders in the gaming industry with 15 offices worldwide, including studios in Chicago, Prague, Shanghai, Tokyo, and Vilnius. Our diverse and multicultural team works together to deliver a top-class experience to millions of players who enjoy Wargaming's titles across all major gaming platforms. Our flagship products include free-to-play hits World of Tanks, World of Warships and World of Tanks Blitz.
Please see
Wargaming Candidate Privacy Policy
for details on how Wargaming uses your personal data.
Location: Remote (US)
About Ondo
Capital markets are moving onchain. Ondo Finance is building the products and infrastructure that will bring them there.
We create institutional-grade, blockchain-enabled investment products and services, including tokenized treasuries, tokenized stocks and ETFs, and new trading experiences built for global, always-on markets. We are the category leader by AUM, well-capitalized, and backed by investors including Founders Fund, Coinbase Ventures, Pantera Capital, and Tiger Global.
The underlying financial infrastructure is complex. We believe the product experience should not be.
About the Web team
The Web team builds the product layer that makes Ondo's financial infrastructure accessible. We own the experiences through which users onboard, establish eligibility, move money, mint and redeem Ondo Stocks, manage portfolios, and use products across multiple blockchains.
We are a small team of exceptional engineers with broad ownership and a high bar for craft, judgment, and execution. We turn complexity across compliance systems, backend services, smart contracts, and external partners into products that feel clear and dependable.
Engineering on this team is distinguished by:
Product taste.
We simplify complex financial workflows without hiding the details that matter.
End-to-end ownership.
Engineers shape, build, launch, and improve the product.
Speed with confidence.
We scope sharply, move quickly, and hold a high quality bar.
Security and correctness.
Access control, auditability, privacy, and failure behavior are design constraints from the start.
High agency and low ego.
We act without waiting, invite direct critique, and make the team better.
About the role
As a Full-Stack Engineer focused on Growth, you will design the foundations of how users discover, understand, adopt, and return to Ondo's products. You will own the systems and product experiences that turn user insight into measurable growth across acquisition, activation, engagement, and retention.
Your scope spans the full growth loop—from public websites and user-facing product journeys to experimentation, analytics, content systems, backend workflows, and third-party platforms. You will set technical direction, define the measurement foundations, and evolve these systems as our products, markets, and scale change.
This is a foundational ownership role for a senior engineer. You will turn ambiguous growth opportunities into clear hypotheses, durable architecture, and polished product experiences. You will partner closely with Product, Design, Marketing, Data, and Engineering while owning the judgment: where friction matters, what to build, how to measure it, and when the evidence calls for a different direction.
The goal is not experiment volume. It is to understand users better than anyone else and turn that understanding into durable product improvements and measurable business impact.
What you'll do
Own the growth engineering strategy across discovery, acquisition, activation, engagement, and retention—from identifying the highest-leverage opportunities through technical design, launch, measurement, and iteration.
Design and evolve the foundations for experimentation, event instrumentation, attribution, funnel analysis, content, and lifecycle experiences so the team can move quickly and trust what it learns.
Build polished user-facing experiences and the backend systems, data models, APIs, webhooks, and third-party integrations behind them.
Work directly with users and product data to identify friction, form clear hypotheses, and make disciplined product and technical bets.
Turn validated learning into durable product capabilities and measurable business impact—not one-off experiments.
Partner with Product, Design, Marketing, and Data to lead launches, localization, and new ways to grow adoption across Ondo's products.
Improve organic discovery and conversion through technical SEO and AEO, performance, structured content, and clear user journeys.
Raise the level of the team through clear writing, thoughtful code review, strong operational ownership, and effective use of modern AI engineering tools.
What you bring
4+ years of experience building and operating production full-stack applications with React, Next.js, and TypeScript.
Experience driving measurable acquisition, activation, engagement, or retention outcomes through growth engineering, product-led growth, consumer product, ecommerce, or similarly data-informed product work.
Experience building and operating serverless systems on AWS, including Lambda and adjacent services such as API Gateway, EventBridge, or SQS.
Strong experience using BigQuery and product analytics data to model funnels, investigate user behavior, and measure product and business impact.
Strong fundamentals in API and data-model design, relational databases, event-driven systems, event instrumentation, experimentation, testing, and observability.
A record of owning product work end to end—not only implementing experiments or specifications handed to you.
Product taste: you can find the simplest experience that solves the user's problem without ignoring the complexity or edge cases underneath it.
Data fluency and intellectual honesty. You can define useful metrics, distinguish signal from noise, and change direction when the evidence challenges your hypothesis.
The ability to communicate clearly, learn unfamiliar domains quickly, and create alignment across engineering, product, design, marketing, and data partners.
High agency and low ego. You move important work forward, invite strong critique, and care more about the outcome than whose idea wins.
Preferred qualifications
Experience building fintech, trading, crypto-native, or other high-consideration products where earning user trust is essential.
Experience with lifecycle marketing, CRM, CMS, experimentation, localization, or analytics platforms.
Familiarity with AEO, structured content, international SEO, and growth across multiple regions or languages.
Experience applying AI to prototyping, personalization, analytics, content operations, or other growth workflows.
We do not expect every strong candidate to arrive with deep crypto or every growth specialty listed above. We do expect curiosity, strong product and engineering fundamentals, and the ability to turn learning into shipped improvements quickly.
What we offer
Challenging, high-impact work helping define how a global audience discovers and adopts a new category of financial products.
Competitive compensation including salary, future token rights, and/or equity, according to your preferences.
Full medical, vision, and dental benefits, plus a flexible vacation policy.
A remote-first environment with meaningful autonomy and influence over product and technical direction.
Exceptional colleagues from Goldman Sachs, BlackRock, Two Sigma, Bridgewater, SpaceX, AWS, Meta, Google, McKinsey, Coinbase, Circle, and Uniswap.
Backing from leading crypto experts and investors, including Pantera Capital, Founders Fund, and Coinbase Ventures.
Location: Remote UK
At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.
The International Accelerator Engineering team is growing, and we're looking for a Senior Software Engineer to join us! We're a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Silicon Valley. We directly improve the financial lives of over 20 million people shaping how Affirm builds Direct-to-Consumer products for Canada, the UK, and future international markets. We build and own various products used by our consumers, like the Affirm App and other Direct to Consumer products across international markets. We are here to make sure we reach and provide useful tools to our users so they can experience honest financial products at their fullest.
Our work is agile and fast-paced, shipping new code to production for millions to use across geographies and rigorously measuring the impact it has on them. This role rewards curiosity, ownership, ability to zoom in and out, switch contexts often, also in an open contribution model, and a builder's mindset. You'll know exactly what your objectives are, you'll have what you need to hit them, and you'll choose your own path to get there, while constantly looking for ways to get AI to increase productivity on a daily basis. You'll learn quickly from experienced teammates and grow your craft on problems that matter at scale.
If you want to build something new and operate it at scale – come join us!
What You'll Do:
· You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
· You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
· You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
· You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
· You will foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
· You will help develop talent on your team by providing feedback and guidance, and leading by example.
What We Look For:
· You have a total of 4+ years of experience as a software engineer.
· You are experienced in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes.
· You have experience shipping web apps using declarative UI frameworks like React or Vue.
- You efficiently use AI to assist you to deliver high quality products on a daily basis
· You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
· You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
· Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
· You have strong verbal and written communication skills that support effective collaboration with our global engineering team.
Compensation & Benefits
Base Pay Grade - N
Equity Grade - 5
Employees new to Affirm typically come in at the start of the pay range. Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills.
Base pay is part of a total compensation package that may include equity rewards, monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidised medical coverage, dental and vision for you and your dependents.)
Base pay range per year: £120,000 - £168,000
Location: UK Remote
#LI-Remote
Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.
Benefits designed for you
Our benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:
Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.
Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.
Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount.
We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.
For positions based in San Francisco or Los Angeles: Affirm considers qualified applicants with arrest and conviction records, as required by law.
By clicking "Submit Application," you acknowledge that you have read Affirm's
Global Candidate Privacy Notice
and consent to the use of your personal information as described.
Location: London
Workplace: OnSite
Company Description
We’re http://checkout.comCheckout.com http://Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.
We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.
Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.
If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.
With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.
JOB DESCRIPTION
Global payments are complex and ever-evolving. At Checkout our software engineers develop the next-generation payments technologies that enable our Merchants to boost their acceptance rates, cut processing costs, fight fraud, and create cutting edge technology that enables extraordinary customer experiences.
We're looking for Senior Software engineers who bring fresh ideas, have a curious nature and are passionate about working in an Engineering environment which focuses on building products to achieve the company's strategic goals. You’ll get to work with teams from across Checkout.com http://Checkout.com’s portfolio of products and services who all have a real customer first philosophy.
As a Senior Software engineer, you will lead and drive specific projects critical to Checkout's needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve. We need our engineers to be versatile, display exceptional leadership qualities and be enthusiastic to take on new problems across the full-stack as we continue to push technology forward. With your technical expertise you will lead project priorities, deadlines, and deliverables. You will design, develop, test, deploy, maintain, and enhance software solutions.
What are we looking for:
- Bachelor's or Master's degree in Computer Science, Engineering, or related field
- Proficiency in C# .NET, Java, or Go, with a strong understanding of software development principles in either a backend or full stack environment.
- Great communication skills and ability to interact effectively with a wide range of stakeholders
- Experience working in agile environments and delivering high-quality code within tight deadlines
- Excellent problem-solving skills and the ability to work independently as well as part of a team
- Someone who is AI proficient or AI curious, you will be hungry to embrace what the latest technology has to offer to enhance yours and your teams productivity
- Payments or financial knowledge is a plus, but not a necessity
How you’ll make an impact:
- Be part of, and collaborate with, cross-functional teams including product management, across a large engineering community.
- Define and design loosely coupled, scalable systems in a wider microservices using industry best practices.
- Stay up-to-date, use, and spread knowledge of the latest technologies used by Checkout.
- Write clean, maintainable, extendable and testable code on some of Checkout’s most impactful systems.
- Build, own and operate your systems to the highest levels of resilience and service.
- Mentor junior team members and assist in their technical development
Additional Information
Bring all of you to work
We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one.
Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.
We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.
It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.
Life at Checkout.com http://Checkout.com
We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.
Curious about what it’s like to be part of our team? Visit our Careers Page https://www.checkout.com/careers to learn more about our culture, open roles, and what drives us.
For a closer look at daily life at Checkout.com http://Checkout.com, follow us on LinkedIn https://www.linkedin.com/company/checkout/life/ and Instagram https://www.instagram.com/checkout_com/
Location: Beijing, China
Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!
At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun.
Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.
Read
our blog
to learn more.
About the role...
The Monetization Pillar focuses on Duolingo’s key business drivers—subscriptions, ads, and in-app purchases. Our goal is to build the best premium experiences for our learners while ensuring the sustainability and success of our business model. As a senior Android Engineer, you will play an instrumental role in the strategic direction of Duolingo by developing and refining the methods that make our monetization efforts more effective and efficient. You'll work cross functionally with product, design, data science, machine learning, and ad operations.
🧠 You will...
Collaborate on software projects with product design and backend aspects
Develop, release, and maintain native Android application features in Kotlin
Mentor and set technical direction for junior engineers on the team
✅ You have...
A Bachelor’s degree in Computer Science or a related technical field
Programming experience in Kotlin on Android
The ability to communicate technical issues effectively to technical and non-technical stakeholders
⭐ Exceptional candidates will have...
Strong programming experience building reactive Android apps
Demonstrated self-direction, with a desire both to learn new techniques and mentor others
Experience designing clean and maintainable APIs
Experience writing unit tests and testable code
The offered salary is dependent upon several factors, including work experience, skills, and internal peer comparisons. The posted range is subject to change in the future. For this role, base salary is supplemented by equity compensation. We encourage you to talk with your recruiter for more information related to compensation for this role!
Salary Range:
¥804,949
—
¥1,088,971 CNY
Benefits:
Take a peek at how we care for our employees' holistic well-being with our benefits
here
.
Job Alerts:
Sign up for job alerts
here
.
Accommodations:
We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact
accommodations@duolingo.com
.
Equal Employment Opportunity:
Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.
Fraud Warning:
Unfortunately, there is a rise in scammers pretending to be real Duolingo employees. Duolingo and our employees will never ask for your Social Security number, bank details, or passport info, and we’ll never ask you to deposit a check, purchase equipment, or exchange money during the interview process. Real Duolingo employees always use an email that ends in @duolingo.com or @recruiting.duolingo.com. Stay alert and double-check these details before sharing any information.
By applying for this position your data will be processed as per the
Duolingo Applicant Privacy Notice
.
Location: Beijing, China
Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!
At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun.
Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.
Read
our blog
to learn more.
About the role...
The Monetization Pillar focuses on Duolingo’s key business drivers—subscriptions, ads, and in-app purchases. Our goal is to build the best premium experiences for our learners while ensuring the sustainability and success of our business model. As a senior iOS Engineer, you will play an instrumental role in the strategic direction of Duolingo by developing and refining the methods that make our monetization efforts more effective and efficient. You'll work cross functionally with product, design, data science, machine learning, and ad operations.
🧠 You will...
Collaborate on software projects with product design and backend aspects
Develop, release, and maintain native iOS applications, primarily in Swift
Mentor and set technical direction for junior engineers across the company
✅ You have...
A Bachelor’s degree in Computer Science or a related technical field
A solid foundation in computer science with strong competencies in data structures, algorithms, and software design
Programming experience in Swift
⭐ Exceptional candidates will have...
Strong proficiency in Swift, with proven ability to build and maintain production-level applications
Strong technical knowledge of iOS mobile application development for iPhone/iPad using Swift with Cocoa Touch and related frameworks
Experience designing clean and maintainable APIs
Experience with multithreaded programming
Experience writing unit tests and testable code
Knowledge of iOS SDK performance tools and optimization techniques
The offered salary is dependent upon several factors, including work experience, skills, and internal peer comparisons. The posted range is subject to change in the future. For this role, base salary is supplemented by equity compensation. We encourage you to talk with your recruiter for more information related to compensation for this role!
Salary Range:
¥804,949
—
¥1,088,971 CNY
Benefits:
Take a peek at how we care for our employees' holistic well-being with our benefits
here
.
Job Alerts:
Sign up for job alerts
here
.
Accommodations:
We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact
accommodations@duolingo.com
.
Equal Employment Opportunity:
Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.
Fraud Warning:
Unfortunately, there is a rise in scammers pretending to be real Duolingo employees. Duolingo and our employees will never ask for your Social Security number, bank details, or passport info, and we’ll never ask you to deposit a check, purchase equipment, or exchange money during the interview process. Real Duolingo employees always use an email that ends in @duolingo.com or @recruiting.duolingo.com. Stay alert and double-check these details before sharing any information.
By applying for this position your data will be processed as per the
Duolingo Applicant Privacy Notice
.
Location: Edinburgh, Scotland, United Kingdom; Leeds, England, United Kingdom; London, England, United Kingdom
About Us
Fanatics is a leading global sports platform redefining how fans connect with the teams, players and moments they love. Our businesses — Fanatics Commerce, Fanatics Collectibles, Fanatics Betting & Gaming, Fanatics Events, Fanatics Advertising, Fanatics Markets and Fanatics Studios — maximize the presence and reach for hundreds of partners globally and create a one-stop experience that allows fans to buy, bet, collect, and earn, while engaging with sports in deeper, more immersive ways. This includes licensed fan gear and lifestyle products, sportsbook and iGaming, physical and digital trading cards, live events, premium sports entertainment content, credit card offerings and more. Together, they form a powerful, integrated ecosystem — connected by the Fanatics ONE loyalty program and FanCash, the currency of sport — delivering personalized experiences to over 100 million fans worldwide. Fanatics holds partnerships with over 900 sports properties, from professional leagues and players’ associations to teams, colleges and retail partners; over 7,000 athletes and celebrities; and over 2,000 retail locations, including all Lids stores. Backed by a team of more than 22,000 employees, Fanatics is committed to relentlessly enhancing the fan experience.
About the Team
Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about. Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow—from sports and entertainment to political elections and beyond. Our mission is to redefine how fans engage with the moments and markets that matter most. We're looking for the right people to help us build the future of prediction markets.
Role Overview
As a Senior Software Engineer within our Platform team, you will help build and operate the platform underpinning our exchange and trading systems. You will adapt and evolve our infrastructure and platform standards to support a highly available, low-latency exchange, partnering closely with exchange engineers and engineering leads to enable rapid innovation without compromising stability or security.
This role requires a balance of deep hands-on software engineering and systems thinking. You will build tools, services and automation that support the exchange—from load-testing environments and mock integrations to monitoring and automated recovery. You will own projects from ideation to production and help operate the platform as the exchange goes live. The balance of coding and infrastructure work varies by project, but you should be comfortable independently developing new software as well as improving existing systems, championing best-in-class platform standards and mentoring mid-level engineers.
On the engineering side, we are pioneering the use of AI as a code collaborator. We need engineers who have moved beyond experimentation—who actively use tools like Claude Code, Cursor, or GitHub Copilot to ship production code faster while maintaining exceptional quality.
Responsibilities
Design, build and maintain software tools, services and automation that solve complex infrastructure, reliability and developer experience challenges.
Design, build and maintain highly available cloud-native infrastructure, ensuring the platform scales reliably with our growing user base.
Build and optimize CI/CD pipelines and developer tooling to eliminate friction in the software delivery lifecycle.
Develop load-testing environments and supporting software, including mock services and integrations.
Implement team-level standards for AI-augmented development, using effective prompting and validation practices to increase velocity without sacrificing code quality.
Identify and mitigate AI-generated code pitfalls, such as security vulnerabilities or over-abstraction, and assist in tracking team productivity metrics.
Implement and maintain platform security safeguards and compliance standards to protect the integrity of the firm’s systems.
Contribute to the system observability roadmap by implementing monitoring, tracing, alerting and automation to improve operational reliability.
Partner with product and engineering teams to translate technical requirements into scalable platform solutions.
Mentor junior and mid-level engineers, participate in the on-call rotation, lead incident response for team-owned services and deliver engineering improvements that prevent recurring incidents.
Skills
5+ years of experience in software, backend or platform engineering, with a track record of delivering production software and building scalable, cloud-native environments.
Strong software development skills, including the ability to independently design, build, test and deploy services or substantial tools from scratch.
Deep hands-on Kubernetes experience, including operating production workloads, troubleshooting failures, and designing for high availability and efficient scaling.
Strong hands-on experience with AWS and infrastructure as code using Terraform.
High proficiency in Java and Python; Go is a plus. You should be comfortable bridging the gap between infrastructure and application logic.
Understanding of distributed systems and the trade-offs between low latency, high availability, scalability and operational complexity.
Experience building mature CI/CD pipelines and working with observability tools such as Prometheus, Grafana or Datadog.
Strong proficiency in using AI collaborators such as Claude Code, Cursor or GitHub Copilot to ship production code and improve personal development workflows.
Ability to evaluate AI-generated code for security gaps or architectural errors and implement rigorous testing strategies.
Proven ability to take ownership of complex projects in a fast-paced environment, proactively identifying improvements and balancing speed with architectural health.
Strong communication skills and the ability to collaborate effectively with distributed engineering and product teams.
Preferred Qualifications
Experience in high-growth startup environments.
Experience with financial systems, exchanges, real-money transactions or regulatory compliance.
Background in building internal developer tools, CLI applications or infrastructure automation services.
Experience developing load-testing environments, mock services or automated recovery systems.
Experience leading small project groups or “squads” within a larger team.
Depending on the role, your interview and onboarding e
xperience may include in-person components, such as onsite interviews or Launching into Better: LIVE—a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.
Ready to build the future of sports betting? If you possess some of these skills but not all of them, we still encourage you to apply! Please note that
visa sponsorship is not available
for this position. We are open to
fully remote candidates based in the United Kingdom.
Remote employees may also be eligible for a home office setup stipend.
#LI-Remote
#LI-AL1
By submitting your application, you agree to our terms of service and acknowledge you have read our
Candidate Privacy Policy.
Fanatics will never ask candidates for money, banking information, or other sensitive personal information as part of the interview process. If you receive a suspicious message claiming to be from Fanatics recruiting, please do not respond and report it
here
.
Location: Edinburgh, Scotland, United Kingdom; Leeds, England, United Kingdom; London, England, United Kingdom
About Us
Fanatics is a leading global sports platform redefining how fans connect with the teams, players and moments they love. Our businesses — Fanatics Commerce, Fanatics Collectibles, Fanatics Betting & Gaming, Fanatics Events, Fanatics Advertising, Fanatics Markets and Fanatics Studios — maximize the presence and reach for hundreds of partners globally and create a one-stop experience that allows fans to buy, bet, collect, and earn, while engaging with sports in deeper, more immersive ways. This includes licensed fan gear and lifestyle products, sportsbook and iGaming, physical and digital trading cards, live events, premium sports entertainment content, credit card offerings and more. Together, they form a powerful, integrated ecosystem — connected by the Fanatics ONE loyalty program and FanCash, the currency of sport — delivering personalized experiences to over 100 million fans worldwide. Fanatics holds partnerships with over 900 sports properties, from professional leagues and players’ associations to teams, colleges and retail partners; over 7,000 athletes and celebrities; and over 2,000 retail locations, including all Lids stores. Backed by a team of more than 22,000 employees, Fanatics is committed to relentlessly enhancing the fan experience.
About the Team
Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about. Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow—from sports and entertainment to political elections and beyond. Our mission is to redefine how fans engage with the moments and markets that matter most. We're looking for the right people to help us build the future of prediction markets.
Role Overview
As a Staff Software Engineer within our Platform team, you will help define the technical direction of the platform underpinning our exchange and trading systems. You will lead the design and evolution of our infrastructure and platform standards to support a highly available, low-latency exchange, partnering closely with exchange engineers and engineering leads to enable rapid innovation without compromising stability or security.
This role requires a balance of deep hands-on software engineering, systems thinking and technical leadership. You will lead complex projects that support the exchange—from load-testing environments and mock integrations to monitoring and automated recovery. You will turn ambiguous requirements into practical designs, own delivery from ideation to production and help operate the platform as the exchange goes live. The balance of coding and infrastructure work varies by project, but you should be comfortable independently developing new software as well as improving existing systems, setting platform standards and mentoring engineers across experience levels.
On the engineering side, we are pioneering the use of AI as a code collaborator. We need engineers who have moved beyond experimentation—who actively use tools like Claude Code, Cursor, or GitHub Copilot to ship production code faster while maintaining exceptional quality.
Responsibilities
Lead the design and development of software tools, services and automation that solve complex infrastructure, reliability and developer experience challenges.
Define and evolve the architecture of highly available cloud-native infrastructure, balancing performance, reliability, security and cost as the platform grows.
Set technical direction for CI/CD pipelines and developer tooling, remaining hands-on in delivering improvements to the software delivery lifecycle.
Lead the development of load-testing environments and supporting software, including mock services and integrations.
Establish and evolve standards for AI-augmented development, using effective prompting and validation practices to increase velocity without sacrificing code quality.
Identify and mitigate AI-generated code pitfalls, such as security vulnerabilities or over-abstraction, and help teams evaluate the impact on quality and productivity.
Guide the design and implementation of platform security safeguards and compliance standards to protect the integrity of the firm’s systems.
Shape the system observability roadmap and lead improvements to monitoring, tracing, alerting and automated recovery.
Partner with exchange, product and engineering leads to resolve architectural trade-offs, align priorities and deliver scalable platform solutions.
Mentor engineers across experience levels, lead technical design discussions and raise engineering standards across teams.
Participate in the on-call rotation, lead incident response for team-owned services and drive engineering improvements that prevent recurring incidents.
Skills
Significant experience in software, backend or platform engineering, with a track record of leading complex technical projects and delivering production software and scalable, cloud-native environments.
Deep software development expertise, including the ability to independently design, build, test and deploy services or substantial tools from scratch and guide others through complex implementation decisions.
Deep hands-on Kubernetes experience, including designing and operating production environments, troubleshooting complex failures, and establishing patterns for high availability and efficient scaling.
Strong hands-on experience with AWS and infrastructure as code using Terraform, including making architectural decisions across complex environments.
High proficiency in Java and Python; Go is a plus. You should be comfortable bridging the gap between infrastructure and application logic.
Deep understanding of distributed systems and the ability to make and explain trade-offs between low latency, high availability, scalability and operational complexity.
Experience shaping CI/CD and observability approaches, with hands-on knowledge of tools such as Prometheus, Grafana or Datadog.
Strong proficiency in using AI collaborators such as Claude Code, Cursor or GitHub Copilot to ship production code and improve engineering workflows.
Ability to evaluate AI-generated code for security gaps or architectural errors and establish rigorous testing and validation practices.
Proven ability to turn ambiguous problems into a clear technical direction and deliver improvements across team boundaries, balancing immediate needs with long-term architectural health.
Strong communication skills, including the ability to explain complex technical decisions, influence without formal authority and collaborate effectively with distributed engineering and product teams.
Experience mentoring senior engineers and building alignment around technical standards and architectural decisions.
Preferred Qualifications
Experience in high-growth startup environments.
Experience with financial systems, exchanges, real-money transactions or regulatory compliance.
Background in designing and building internal developer platforms, tools, CLI applications or infrastructure automation services.
Experience developing load-testing environments, mock services or automated recovery systems.
Experience leading technical initiatives spanning multiple teams or evolving platform architecture through significant growth or change.
Depending on the role, your interview and onboarding experience may include in-person components, such as onsite interviews or Launching into Better: LIVE—a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.
Ready to build the future of sports betting? If you possess some of these skills but not all of them, we still encourage you to apply! Please note that
visa sponsorship is not available
for this position. We are open to
fully remote candidates based in the United Kingdom.
Remote employees may also be eligible for a home office setup stipend.
#LI-Remote
#LI-AL1
By submitting your application, you agree to our terms of service and acknowledge you have read our
Candidate Privacy Policy.
Fanatics will never ask candidates for money, banking information, or other sensitive personal information as part of the interview process. If you receive a suspicious message claiming to be from Fanatics recruiting, please do not respond and report it
here
.
Location: Belgrade
Job Overview
We are looking for a
Senior Performance QA Engineer
with experience in GameDev
to join our World of Warships PC team.
This position is open in our Belgrade or Nicosia office
.
In this role, you’ll focus on performance testing and automation, helping us identify performance bottlenecks and ensure a smooth and stable experience for our players. You’ll work closely with QA and development teams to investigate, analyze, and improve game performance.
If you’re enjoy sharing your expertise and learning from others, and want to contribute to the quality of a large-scale PC game, we’d love to hear from you.
Reports to
Lead Automation QA Engineer
What will you do?
Develop and maintain automated tests for functional, performance, and stability testing on Python
Develop and maintain core functionality of the automation framework
Analyze automated test results and investigate failures
Performance testing and profiling of game client and backend services
Maintain documentation for existing automated tests, frameworks, and tools
Collaborate with other teams and provide support based on automated test results
Participate in the development and maintenance of CI/CD pipelines and related tools
Work with different teams as internal customers, understand their needs, and provide automation solutions
Participate in code reviews and contribute to improving automation code quality
What are we looking for?
3+ years of experience in Performance Testing or Performance QA
3+ years of experience in Automation QA or a similar position
1+ year of commercial experience in Python-based automated testing, including writing performance test suites using pytest
Experience in Performance testing tools and frameworks (k6, load testing, profiling tools)
Experience in analyzing and optimizing game performance (PC games)
Experience with Elasticsearch for log collection and analysis
Experience with CI/CD systems (Jenkins, TeamCity)
Knowledge of PC architecture basics and component interaction (CPU, GPU, memory, disk I/O)
Understanding of performance metrics: FPS, frame time, CPU/GPU utilization, memory consumption
Knowledge of the theory and methods of software testing and performance testing methodologies
Upper-Intermediate (B2) or higher English knowledge
What additional skills will help you stand out?
Experience in game development or game engines (Unreal, Unity)
Experience in log parsing and data analysis with pandas and NumPy
Experience in Python profiling and optimization (cProfile, line_profiler)
Experience with PostgreSQL performance analysis and query optimization
Experience in Docker, docker-compose
Experience in monitoring tools (Grafana, Prometheus)
Experience with Python async/await and multiprocessing
Experience in designing and maintaining performance test infrastructure
Experience in Linux-based systems
Mentoring experience in QA team
Work mode
This position is open in our Belgrade or Nicosia office
During the probation period: onsite work
After the probation period: onsite or hybrid (3 days per week in the office)
This role is eligible for relocation & immigration support
Benefits
Benefits and perks are tailored to the local market and culture. Our benefits in Belgrade include:
Additional vacation days based on years of service at Wargaming: up to 5 days on top of the statutory minimum
Additional paid time off (5 Personal Days, Birthday Leave, Marriage Leave, Compassionate Leave)
Sick Leave Compensation, Maternity Leave Benefits
Premium Private Health Insurance
Career development and education opportunities within the company
English clubs and platform for learning languages
Mental well-being program (iFeel)
Commuting allowance
Company events
FitPass membership
Discounts for employees
Personal Gaming Account
Coffee, fruits, and snacks in the office
On-site canteen with subsidized prices for food and drinks
Seniority Awards
Referral program - you can recommend the best talents to the Company and receive a reward
Please submit your CV in English to ensure smooth processing and review.
About Wargaming
Wargaming is an award-winning online game developer and publisher headquartered in Nicosia, Cyprus. Operating since 1998, Wargaming has become one of the leaders in the gaming industry with 15 offices worldwide, including studios in Chicago, Prague, Shanghai, Tokyo, and Vilnius. Our diverse and multicultural team works together to deliver a top-class experience to millions of players who enjoy Wargaming's titles across all major gaming platforms. Our flagship products include free-to-play hits World of Tanks, World of Warships and World of Tanks Blitz.
Please see
Wargaming Candidate Privacy Policy
for details on how Wargaming uses your personal data.
Location: San Francisco, CA; Boston, MA; New York, NY
Workplace: OnSite
ABOUT US
At LangChain, our mission is to enable every company to own its intelligence. We believe agents will transform how companies operate, and we're building the foundation to make that future possible. Our open-source harnesses and LangSmith platform give developers and enterprises the infrastructure to run, improve, and govern agents at scale.
We've raised $460M to date, with our most recent funding round valuing the company at $3B, backed by leading investors including Sequoia, Benchmark, IVP, and CapitalG. As we continue to expand our platform and tackle some of the hardest challenges in agent engineering, every team member has the opportunity to make a meaningful impact and help shape both our technology and the future of the industry.
More than 7,000 organizations rely on LangSmith, from fast-growing startups to Fortune 500 enterprises, including NVIDIA, Bridgewater, LinkedIn, Workday, and Rippling. We're just getting started on making high-performing agents easier to build and manage at scale.
About The Role:
We’re looking to add a frontend engineer to develop and enhance new features on LangSmith, working on our enterprise platform product for LLM application observability, testing, and debugging.
*This role can be based in our San Francisco, New York, or Boston office. Employees within commuting distance work from the office five days per week. Candidates who live outside commuting distance (e.g. >1hr each way), may be eligible for hybrid arrangements depending on location and role requirements.
What You Will Do:
- Develop new user-facing features using React & Typescript
- Build reusable components and front-end libraries for future use
- Translate designs and wireframes into high-quality code
- Optimize components for maximum performance across a vast array of web-capable devices and browsers
- Collaborate with fullstack and backend developers and UX/UI designers, to enhance usability
What You Will Bring:
- 2+ years of Front-end engineering experience with strong proficiency in React, JavaScript and TypeScript
- Hands-on experience with front-end development tools like Babel, Vite, Webpack, NPM, and Yarn
- Familiarity with REST APIs and experience working closely with fullstack and backend engineers
- Knowledge of modern authorization mechanisms, such as JWTs
- A passion for user experience, design and building clean, engaging, and intuitive interfaces
- Strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non-technical stakeholders
- The DNA to thrive in a start-up, fast-paced environment. Views unstructured environments as an opportunity to figure out the most impactful work and help define the future success of the company
- An ownership mind-set. You are self-driven and look for opportunities to make an impact.
- Strong computer science fundamentals, ideally with a degree in computer science or related field
Compensation
- Annual salary range: $160,000-$195,000 USD
COMPENSATION PHILOSOPHY:
We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks.
We are hiring for this role across a range of scope, and the compensation band reflects that. Your offer depends on what we learn about your impact, craft, leadership, and communication during the interview process. We will tell you early where you’re tracking and talk comp with you before offer stage. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.
BENEFITS
Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.
Location: United States, San Mateo, CA
Why Sony Interactive Entertainment?
Sony Interactive Entertainment isn’t just the Best Place to Play — it’s also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we’re part of a proud legacy of innovation and excellence. SIE is a dynamic technology company, delivering cutting-edge hardware and network services to more than 100 million people and an entertainment leader, home to some of the most beloved and recognizable intellectual properties (IP) in the world. Our role at SIE is to create and nurture the experiences under the PlayStation brand, a name synonymous with entertainment excellence and creativity.
Senior Technical Program Manager, Mobile
San Mateo, CA
As a Senior Technical Program Manager, you will drive the development of software that powers the mobile experiences defining the future of the PlayStation ecosystem. You will coordinate complex technical initiatives across mobile applications and cross-platform systems, ensuring successful delivery of products that delight millions of users worldwide.
You will be responsible for orchestrating programs across Android native development, React Native implementations, and critical infrastructure systems. Your role involves you in every facet of the launch lifecycle, from initial planning through production deployment.
Responsibilities:
• Drive end-to-end program execution for mobile applications and infrastructure systems, coordinating across engineering teams to deliver scalable and performant solutions.
• Manage program timelines and dependencies across mobile and console teams, ensuring alignment between Android native, React Native, and backend infrastructure initiatives.
• Lead Agile/Scrum ceremonies and facilitate sprint planning, working closely with engineering teams to translate product requirements into actionable deliverables and realistic timelines.
• Coordinate with international stakeholders (USA, Japan, UK) including UI designers, product managers, and engineering leads to ensure cohesive program execution across time zones.
• Own program schedules, risk mitigation strategies, and executive reporting while actively managing dependencies between mobile client development and platform services.
• Partner with engineering teams to define system architecture decisions, technical requirements, and integration points between mobile applications and PlayStation ecosystem services.
• Drive adoption of development best practices, tooling standardization (JIRA, Confluence), and process improvements across distributed teams.
• Identify and resolve roadblocks proactively, using performance metrics and data to inform program decisions and priority adjustments.
Required Qualifications:
• Bachelor's degree in Computer Science, Engineering, or related technical field, or equivalent practical experience.
• 5+ years of experience as a Technical Program Manager driving consumer-facing mobile or software products from conception to launch.
• Proven track record managing programs involving Android native development, cross-platform frameworks, and/or infrastructure systems.
• Deep understanding of mobile development lifecycles, including experience with both native (Android/iOS) and cross-platform (React Native) technologies.
• Expertise in Agile/Scrum methodologies with hands-on experience using JIRA, Confluence, and similar project management tools.
• Strong technical acumen to engage credibly with engineering teams on architecture decisions, technical trade-offs, and implementation approaches.
• Excellent written and verbal communication skills with ability to influence stakeholders from individual contributors through senior leadership.
• Experience coordinating programs across geographically distributed teams with proven ability to navigate cultural and timezone differences.
• Demonstrated ability to balance strategic thinking with attention to detail while managing ambiguity in fast-paced environments.
Desired Qualifications:
• Experience with mobile application performance optimization and metrics analysis.
• Understanding of mobile application architecture patterns (MVC, MVVM, MVP).
• Familiarity with gaming, digital entertainment, or consumer electronics industries.
• Knowledge of privacy compliance requirements for mobile applications.
• Master's degree or MBA in a related field.
• Experience with GraphQL APIs and modern mobile development frameworks.
Working Environment:
• Agile team environment with startup culture within a large organization.
• Location flexible with hybrid work options.
• Travel required (domestic and international), estimated 15-25%.
• Individual contributor role without direct supervisory responsibilities.
At SIE, we consider several factors when setting each role’s base pay range, including the competitive benchmarking data for the market and geographic location.
Please note that the base pay range may vary in line with our hybrid working policy and individual base pay will be determined based on job-related factors which may include knowledge, skills, experience, and location.
In addition, this role
is eligible
for SIE’s top-tier benefits package that includes medical, dental, vision, matching 401(k), paid time off, wellness program and coveted employee discounts for Sony products.
This role also may be eligible for a bonus package.
Click
here
to learn more.
The estimated base pay range for this role is listed below.
$163,600
—
$245,400 USD
Please note, Sony Interactive Entertainment conducts background checks at the offer stage for all new employees (which may include criminal background checks for some roles) and will need to process personal information to support these checks.
Please refer to our Candidate Privacy Notice (where applicable) for more information about what personal information we collect, how we use it, who we share it with, and your data protection rights.
Equal Opportunity Statement:
Sony is an Equal Opportunity Employer. All persons will receive consideration for employment without regard to gender (including gender identity, gender expression and gender reassignment), race (including colour, nationality, ethnic or national origin), religion or belief, marital or civil partnership status, disability, age, sexual orientation, pregnancy, maternity or parental status, trade union membership or membership in any other legally protected category.
We strive to create an inclusive environment, empower employees and embrace diversity. We encourage everyone to respond.
Sony Interactive Entertainment is a Fair Chance employer and qualified applicants with arrest and conviction records will be considered for employment.
Location: United States
Workplace: Remote
We’re looking for a Staff Software Engineer to help shape AI governance for developer tooling at Coder. This role sits on our AI Governance team, which builds and maintains two enterprise-grade components of Coder's AI governance stack.
AI Gateway is a centralized LLM gateway that sits between coding agents and providers such as OpenAI or Anthropic, providing organizations with audit trails, token tracking, cost control, and centralized authentication. Agent Firewall wraps those agents with default-deny network policies, controlling which domains and methods they can reach inside workspaces.
This team works across the full stack - from Go backend and React frontend to integrating with LLM provider APIs. Day to day, you'll be shipping features, hardening security boundaries, collaborating with enterprise customers on real-world policy needs, and contributing to Coder's open-source ecosystem.
What you'll do here
- Design and build product features that push the standard for remote development in self-hosted environments
- Create and improve upon popular open source projects that integrate with VS Code, JetBrains, and other developer tools
- Champion best practices to both internal team members and external contributors
- Collaborate with Product and Design teams at Coder, as well as with partners like JetBrains, to execute key product integrations
- Document the design, implementation, and operations of systems for knowledge sharing within the team
- Work alongside Customer Success teams to support Coder’s enterprise user base
- Work with cutting-edge AI technologies to create seamless, painless developer experiences
- Rapidly iterate from prototype to implementation in a highly adaptive, reactive team environment
What we're looking for
- 8+ years of full-stack experience writing code in a professional setting, with 1+ year(s) writing Go (ideally in current or most recent position)
- Proficiency in building distributed systems in Go
- Excellent verbal and written communication skills
- Exceptional debugging and troubleshooting skills, and the tenacity to drive a solution to a conclusion
- You are self-motivated with a creative and analytical mindset
Our tech stack
- Frontend: Typescript, React, Vite
- Backend: Go, Postgres, GCP, Kubernetes, gRPC
- Observability: Prometheus, Grafana
- CI/CD: GitHub Actions
- General: GitHub, Slack, Discord, Notion
Bonus tacos if you have
- (Tacos? If you need an ice-breaker, ask how we say thanks by giving tacos!)
- Experience with TypeScript and React
- You have a background in developer tooling, platform engineering, or IaC
- You have a curiosity about the latest tech trends and what is going on in the world of developer tools
ABOUT CODER
Coder is the leading platform for AI development Infrastructure, enabling enterprises to securely run human and AI-driven development workflows in consistent, governed environments. Coder provides self-hosted, agent-ready workspaces that unify developer productivity and platform governance. With Coder, enterprises can confidently evolve from human-only development to AI-assisted and autonomous workflows, without sacrificing security, compliance, or performance. Learn more at coder.com http://coder.com.
INTERVIEW PROCESS
We believe that the interview process should be transparent, consistent, and enjoyable. We value your time and hope to complete the interview process in two to four weeks, if schedules allow. Through your interviews, you will meet a mix of individual contributors, managers, and senior leaders.
AI USE DURING THE INTERVIEW PROCESS
As an AI company, Coder embraces the use of AI tools, and we want to be transparent about our expectations as you navigate our interview process.
Not permitted: Using AI assistance during conversational interviews.
Permitted: Using AI tooling for take-home assessments. Please flag where and to what extent it was used in your take-home. Your submission will not be penalized for using AI as long as it is done honestly.
OUR USE OF AI IN HIRING
We use AI tools to help manage our recruitment process efficiently and fairly. Specifically:
- Ashby and Brainerr help us review inbound applications by surfacing candidates who best match the role requirements we've defined. This tool does not make hiring decisions; it helps our team prioritize which applications to review first.
- Granola takes notes during our interview calls so our team can focus on the conversation with you.
All hiring decisions are made by humans. Our team reviews applications, conducts interviews, and makes final selections. AI tools assist us but never replace human judgment, and these practices are conducted in compliance with applicable data protection, AI governance, and labor laws. Your data is not used to train AI models.
In accordance with New York City Local Law 144, an independent bias audit has been conducted on "Automated Employment Decision Tools"; results are available for Ashby https://www.ashbyhq.com/downloadables/ashby-bias-audit-08-2024.pdf.
If you're applying for a role at Coder and have questions about how we use AI in our process, or if you'd like to request information about the data we collect, please contact careers@coder.com.
CODER IS A PROUD EQUAL OPPORTUNITY EMPLOYER
We are committed to providing equal employment opportunities to qualified applicants and do not discriminate on the basis of race, color, ancestry, religion, sex, pregnancy, gender, gender identity, gender expression, sexual orientation, national origin, age, marital status, genetic information, disability, protected veteran status or any other characteristic protected by federal, state, or local laws.
Location: San Jose, California, United States
Who We Are
At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles:
We Before Me
,
Do the Right Thing
, and
Get Things Done
. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.
About the Opportunity
Our Card and Payment engineering team builds reliable, intuitive experiences at the intersection of cards, payments, crypto, and global financial infrastructure. We partner closely with product, design, backend, risk, compliance, and business teams to make card and payment products accessible to users around the world.
As a Senior Mobile Engineer on the Card and Payment team, your primary responsibility will be to own and improve the global card issuance process. You will work mainly with product and engineering partners in the US, while meeting regularly with teams in Asia to understand requirements and align delivery. We are looking for someone who is highly self-driven, takes real ownership, collaborates well, and is eager to learn the card issuing and payment businesses in depth.
What You’ll Be Doing
Own the end-to-end global card issuance process—from eligibility and application through card creation, activation, provisioning, and lifecycle servicing—and improve the experience as OKX expands into new markets.
Learn the card issuing and payment domains deeply, and translate business, user, payment, and regulatory requirements into sound architecture, clear trade-offs, and executable delivery plans.
Own features from discovery through production, with a strong focus on security, reliability, observability, maintainability, documentation, and test coverage.
Drive ambiguous, cross-functional initiatives to completion with a high degree of ownership, self-direction, and sound judgment.
Collaborate primarily with product and engineering teams in the US, while joining regular discussions with Asia teams to discover, clarify, and align requirements.
Build with Swift, Kotlin, or Rust depending on the problem, and actively learn and adopt new languages, platforms, and tools rather than being limited to a single technology stack.
Use AI coding tools throughout the development lifecycle—from exploration and implementation to testing, review, and documentation—while maintaining strong engineering judgment and accountability.
Build and maintain reusable AI workflows, engineering harnesses, and technical knowledge bases that improve the entire team’s speed and quality.
Review code, share context openly, mentor teammates, and make decisions that improve both engineering quality and overall team outcomes.
Contribute to hiring, onboarding, and the continuous improvement of team practices.
What We Look For In You
B.S. or M.S. in Computer Science, or equivalent practical experience.
Proven experience shipping and operating production-quality mobile applications, with deep expertise in iOS or Android.
Strong proficiency in at least one of Swift, Kotlin, or Rust, with a demonstrated willingness to learn and contribute in unfamiliar languages and technology stacks.
Exceptional ownership and self-direction, with the judgment to make pragmatic decisions and drive ambiguous work to completion.
Demonstrated, regular use of AI coding tools with measurable impact on delivery speed, code quality, or engineering effectiveness.
A team-first mindset: you communicate openly, share knowledge, support peers, and align technical decisions around the best outcome for the team and product.
Genuine curiosity about card issuing and payment businesses, plus the ability to communicate technical decisions clearly with partners across the US and Asia. Professional proficiency in English and Mandarin Chinese is required.
Nice to Haves
Hands-on experience with global card issuance flows, card processing, payments, fintech, crypto, or other high-trust financial products.
Experience launching products across multiple countries or regulatory environments.
Knowledge of mobile security, payment authentication, risk controls, or transaction lifecycle design.
Experience improving mobile architecture, shared components, developer tooling, or engineering productivity at team scale.
Experience mentoring engineers or leading cross-functional technical initiatives.
Perks & Benefits
Competitive total compensation package
L&D programs and Education subsidy for employees' growth and development
Various team building programs and company events
Wellness and meal allowances
Comprehensive healthcare schemes for employees and dependants
More that we love to tell you along the process!
OKX Statement
OKX is committed to equal employment opportunities regardless of race, color, genetic information, creed, religion, sex, sexual orientation, gender identity, lawful alien status, national origin, age, marital status, and non-job related physical or mental disability, or protected veteran status. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.
The salary range for this position is $178,888 to $268,333.
The salary offered depends on a variety of factors, including job-related knowledge, skills, experience, and market location. In addition to the salary, a performance bonus and long-term incentives may be provided as part of the compensation package, as well as a full range of medical, financial, and/or other benefits, dependent on the position offered. Applicants should apply via OKX internal or external careers site.
Notice:
All official
OKX
vacancies are published on this website.
While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated.
If in doubt, please apply directly through our official careers website.
Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to
OKX
's
Candidate Privacy Notice
.
Задачи:
— Проектировать архитектуру backend- и потоковых систем.
— Самостоятельно разрабатывать программный код на Java и/или Kotlin.
— Руководить технической командой в роли играющего тренера.
— Создавать интеграции для потоковой обработки данных и промышленного IoT.
— Обеспечивать эксплуатацию сервисов с помощью Docker, Kubernetes и CI/CD.
Требования:
— Опыт разработки на Java 8+ и/или Kotlin.
— Глубокое знание Spring или Ktor.
— Опыт работы с Apache Kafka и Flink или Spark.
— Знание NoSQL-баз данных Cassandra, ClickHouse или HBase, а также SQL и PostgreSQL.
— Опыт работы с Docker, Kubernetes, GitLab CI/CD или Jenkins.
— Навыки технического руководства и проектирования архитектуры.
Хорошо, если есть:
— Опыт работы со Spring Integration, Apache Camel, StreamPipes или NiFi.
— Опыт разработки решений для IIoT и промышленной автоматизации.
Условия:
— Участие в сложных проектах, приносящих практическую пользу производству.
— Гибкая рабочая среда без лишней бюрократии.
— ДМС и корпоративные скидки.
— Обучение, сертификация и посещение профессиональных конференций за счёт компании.
— Офисное пространство рядом с метро Алексеевская с кухнями, столовой, кафе, фитнесом и кофейным киоском.
seniorNicosia; This role is eligible for relocation & immigration support
УдалённоRemote (US)
УдалённоseniorRemote UK; We're a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Silicon Valley
ОфисseniorLondon
seniorBeijing, China
seniorBeijing, China
seniorEdinburgh, Scotland, United Kingdom; Leeds, England, United Kingdom; London, England, United Kingdom; fully remote candidates based in the United Kingdom
Edinburgh, Scotland, United Kingdom; Leeds, England, United Kingdom; London, England, United Kingdom; fully remote candidates based in the United Kingdom
seniorBelgrade; This role is eligible for relocation & immigration support
ОфисSan Francisco, CA; Boston, MA; New York, NY
seniorUnited States, San Mateo, CA; Coordinate with international stakeholders (USA, Japan, UK) including UI designers, product managers, and engineering leads to ensure cohesive program execution across time zones; Experience coordinating programs across geographically distributed teams with proven ability to navigate cultural and timezone differences
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