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Location: Barcelona, Spain; Budapest, Hungary; Düsseldorf, Germany; Frankfurt, Germany; Krakow, Poland; Krosno, Poland; Liège, Belgium; Lille, France; Vilnius, Lithuania; Ljubljana, Slovenia; Lublin, Poland; Lyon, France; Madrid, Spain; Città Vittoriosa, Malta; Podgorica, Montenegro; Poland; Sarajevo, Bosnia and Herzegovina; Banská Bystrica, Slovakia; Sofia, Bulgaria; Stuttgart, Germany; Tenerife, Spain; Wien, Austria; Warsaw, Poland; Zagreb, Croatia; Zürich, Switzerland; Petten, Netherlands; Aachen, Germany; Athens, Greece; Augsburg, Germany; Bad Homburg, Germany; Baden-Baden, Germany; Berlin, Germany; Bolzano, Italy; Bordeaux, France; Bratislava, Slovakia; Bromolla, Sweden; Brussels, Belgium; Bucuresti, Romania; Bucharest, Romania; Buenos Aires, Argentina; Dusseldorf, Germany; Hamburg, Germany; Hannover, Germany; Luxembourg; Amsterdam, Netherlands; Pondicherry, India; Ahmedabad, India; Berat, Albania; Delhi, India; Dnipro, Ukraine; Helsinki, Finland; Bangalore, India Workplace: remote At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Senior Formal Verification (FV) Engineer to join one of our clients' teams. Reporting directly to the Vector Unit Verification Lead, this is a highly technical Individual Contributor (IC) role. In this position, you will be the dedicated formal expert for the VU team, responsible for designing scalable formal testbenches, writing mathematical properties, and ensuring the absolute algorithmic and architectural integrity of our vector pipeline. You will work side-by-side with VU microarchitects to hunt down deep corner-case bugs and achieve formal sign-off on high-complexity arithmetic and execution blocks. Key Responsibilities Block-Level Execution & Convergence Engineering (90%) End-to-End Testbench Ownership: Design, deploy, and maintain robust formal verification environments for complex Vector Unit sub-blocks (e.g., Vector Execution Pipelines, Vector Register File/Rename interfaces, and Vector Floating-Point Units). Datapath & Arithmetic Verification: Implement advanced word-level modeling, bit-blasting, and algebraic rewriting strategies to verify complex IEEE-754 floating-point and integer vector arithmetic units. Proof Convergence Management: Independently diagnose and resolve proof-convergence failures, over-constraints, and state-space explosions using advanced reduction techniques (e.g., case-splitting, black-boxing, and abstraction modeling). RISC-V Vector Compliance: Develop formal environments to mathematically prove that the VU pipeline strictly complies with the RISC-V Vector (V) Extension specification. Simulation Partnership: Collaborate closely with VU simulation engineers to define a razor-sharp boundary between simulation and formal verification, ensuring maximum bug-hunting efficiency and zero coverage gaps. Embedded Mentorship & Best Practices (10%) Formal-Friendly Design: Partner with VU microarchitects during early-stage RTL development to drive formal-friendly coding styles and structural design patterns. SVA Propagation: Review and refine SystemVerilog Assertions (SVA) written by design and simulation peers, establishing best practices for block-level assertions within the VU team. Education: B.S./M.S. in Computer Engineering, Electrical Engineering, or Computer Science with practical industry execution; or a Ph.D. with a research focus on formal methods or computer arithmetic. Experience: 5+ years of production-grade hardware verification experience (or Ph.D. + 1–3 years) with a strong, proven track record of applying formal verification to CPU, GPU, or DSP execution pipelines. Collaboration Style: A self-driven engineer who enjoys deep mathematical puzzles, collaborates seamlessly within a localized block-level team, and can translate complex proof counter-examples into actionable bugs for designers. Datapath Validation Focus: Strong specialization in arithmetic formal verification, algebraic rewriting, and word-level modeling. Familiarity with control-path formal techniques (liveness, safety properties) is highly welcome. Vector Microarchitecture: Good working knowledge of high-width execution pipelines, vector execution units, or floating-point/integer arithmetic hardware. Experience with Out-of-Order execution mechanics is a plus. Formal Tools: Proficient command of commercial EDA formal tools (e.g., Cadence JasperGold/DPV, Synopsys VC Formal, Siemens OneSpin) and their specialized mathematical/datapath apps. Languages: Native fluency in SystemVerilog and SystemVerilog Assertions (SVA). Scripting proficiency (Python, Tcl, or Bash) for testbench automation. Nice to Have RISC-V Core Verification. RISC-V Ecosystem: Familiarity with the RISC-V Architecture, specifically the Vector (V) and Floating-Point (F/D) extension ecosystems. Emulation platforms (Veloce, ZeBu). Core/Bus interface protocols (e.g., AXI/CHI).

Location: London WorldQuant develops and deploys systematic financial strategies across a broad range of asset classes and global markets. We seek to produce high-quality predictive signals (alphas) through our proprietary research platform to employ financial strategies focused on market inefficiencies. Our teams work collaboratively to drive the production of alphas and financial strategies – the foundation of a balanced, global investment platform. WorldQuant is built on a culture that pairs academic sensibility with accountability for results. Employees are encouraged to think openly about problems, balancing intellectualism and practicality. Excellent ideas come from anyone, anywhere. Employees are encouraged to challenge conventional thinking and possess an attitude of continuous improvement. Our goal is to hire the best and the brightest. We value intellectual horsepower first and foremost, and people who demonstrate an outstanding talent. There is no roadmap to future success, so we need people who can help us build it. Technologists at WorldQuant research, design, code, test and deploy firmwide platforms and tooling while working collaboratively with researchers and portfolio managers. Our environment is relaxed yet intellectually driven. We seek people who think in code and are motivated by being around like-minded people. The Role : Our group is responsible for building software enabling both the large-scale quantitative research operations that drive WorldQuant’s platform and the production of our portfolio. The team is currently embarking on a multi-year journey to provide a powerful, scalable, and efficient platform to drive the firm’s next decade of growth. We are looking for someone who can own some of the unique technical challenges inherent in the problem and who can bring solid experience and perspective to the team. What You’ll Bring: A successful candidate will possess: A minimum of 5 years of writing production-quality code in C++ on Linux platform Good understanding of Python language with development experience Strong understanding and experience with Linux system programming fundamentals Ability to develop large-scale, distributed systems Strong understanding of data structures, algorithms, high-performance application design, and concurrency patterns. Self-motivated and able to work independently with minimal direction Proficiency in English An outstanding candidate will also have experience with one or more of: Developing systems for managing and performing computation on large-scale graph data Streaming / dataflow systems Candidates need not have prior experience in financial services. #LI-DN1 By submitting this application, you acknowledge and consent to terms of the WorldQuant Privacy Policy. The privacy policy offers an explanation of how and why your data will be collected, how it will be used and disclosed, how it will be retained and secured, and what legal rights are associated with that data (including the rights of access, correction, and deletion). The policy also describes legal and contractual limitations on these rights. The specific rights and obligations of individuals living and working in different areas may vary by jurisdiction. Copyright © 2025 WorldQuant, LLC. All Rights Reserved. WorldQuant is an equal opportunity employer and does not discriminate in hiring on the basis of race, color, creed, religion, sex, sexual orientation or preference, age, marital status, citizenship, national origin, disability, military status, genetic predisposition or carrier status, or any other protected characteristic as established by applicable law.

Location: Hong Kong, Hong Kong SAR; Singapore, Singapore OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa. 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 As a Technical Expert, you will own the core build-out of the company's R&D Efficiency Platform, proactively identifying and eliminating risks across the delivery pipeline through CI/CD, DevSecOps, Change Management, and AI-Native upgrades—reducing delivery cost while improving quality and efficiency via platformization and automation. What You’ll Be Doing Build core capabilities of the R&D Efficiency Platform and onboard business systems to improve overall engineering efficiency and delivery quality; Design and optimize CI/CD pipelines (GitLab, Pipeline, ArgoCD), driving standardization, automation, and observability; Drive the AI-Native evolution of CI/CD , introducing AI Agent / LLM for intelligent code review, pipeline self-healing, smart test orchestration, and change-risk prediction; Build DevSecOps capabilities , embedding Shift-Left Security across the lifecycle with SAST, DAST, SCA, image/secret scanning, and security gates to ensure supply-chain security; Establish standardized Change Management , covering requests, risk assessment, approvals (CAB), canary releases, rollback, and change traceability; Apply Kubernetes, microservice governance (Nacos, Apollo, Kong), and Aliyun / AWS cloud services to ensure platform stability and scalability. What We Look For In You Solid Computer Science fundamentals (OS, networking, distributed systems, data structures & algorithms); Proficient in DevOps toolchains , CI/CD, Kubernetes, and microservice stacks; Familiar with DevSecOps concepts and security toolchains, understanding supply-chain security and compliance; Knowledge of AI / LLM in engineering-efficiency and CI/CD scenarios, with an AI-Native engineering mindset; Familiar with the Java stack, with broad awareness of multi-language and business-side technologies; Strong product sense, ownership, and ability to work under pressure; Fluent English communication for efficient cross-regional collaboration. 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! 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: — Руководство командой Algorithmic Pricing и поддержка личного и карьерного роста инженеров. — Обеспечение высокой надежности и низкой задержки системы, управляющей стоимостью доставки в более чем 60 странах. — Сотрудничество с продуктовыми командами для технического направления и проектирования итеративных решений. — Ответственность за технические метрики, KPI, мониторинг и оповещения команды. — Контроль выполнения функционала в небольших, ориентированных на ценность итерациях. Требования: — Подтвержденный опыт технического руководства и управления, согласованного с бизнес-целями. — Глубокое понимание JVM-технологий (Java/Kotlin). — Опыт работы с микросервисами, API-ориентированными и событийно-ориентированными коммуникациями. — Знание инфраструктуры как кода (IaaC), в частности Kubernetes и AWS. — Опыт управления кросс-функциональными командами и зависимостями. Будет плюсом: — Знакомство с A/B тестированием. — Опыт в области ценообразования. — Способность активно поддерживать младших разработчиков. Условия: — Гибридный формат работы с обязательным присутствием 2 дня в неделю в офисе в Берлине. — 27 дней отпуска с дополнительными днями в зависимости от стажа. — Бюджет на образование €1,000 и доступ к Udemy Business. — Медицинские обследования, медитация, абонементы в спортзал и субсидии на велосипед. — Программа покупки акций сотрудниками, корпоративный пенсионный план, страхование жизни и от несчастных случаев. — Полная поддержка при переезде в Берлин.

Location: Singapore WorldQuant develops and deploys systematic financial strategies across a broad range of asset classes and global markets. We seek to produce high-quality predictive signals (alphas) through our proprietary research platform to employ financial strategies focused on market inefficiencies. Our teams work collaboratively to drive the production of alphas and financial strategies – the foundation of a balanced, global investment platform. WorldQuant is built on a culture that pairs academic sensibility with accountability for results. Employees are encouraged to think openly about problems, balancing intellectualism and practicality. Excellent ideas come from anyone, anywhere. Employees are encouraged to challenge conventional thinking and possess an attitude of continuous improvement. Our goal is to hire the best and the brightest. We value intellectual horsepower first and foremost, and people who demonstrate an outstanding talent. There is no roadmap to future success, so we need people who can help us build it. Technologists at WorldQuant research, design, code, test and deploy firmwide platforms and tooling while working collaboratively with researchers and portfolio managers. Our environment is relaxed yet intellectually driven. We seek people who think in code and are motivated by being around like-minded people. The Role : Our group is responsible for building software enabling both the large-scale quantitative research operations that drive WorldQuant’s platform and the production of our portfolio. The team is currently embarking on a multi-year journey to provide a powerful, scalable, and efficient platform to drive the firm’s next decade of growth. We are looking for someone who can own some of the unique technical challenges inherent in the problem and who can bring solid experience and perspective to the team. What You’ll Bring: A successful candidate will possess: A minimum of 7 years of writing production-quality code in C++ on Linux platform Strong understanding and experience with Linux system programming fundamentals Ability to develop large-scale, distributed systems Strong understanding of data structures, algorithms, high-performance application design, and concurrency patterns. Self-motivated and able to work independently with minimal direction Proficiency in English An outstanding candidate will also have experience with one or more of: Python development experience is also a plus Developing systems for managing and performing computation on large-scale graph data Streaming / dataflow systems Candidates need not have prior experience in financial services. #LI-SN1 By submitting this application, you acknowledge and consent to terms of the WorldQuant Privacy Policy. The privacy policy offers an explanation of how and why your data will be collected, how it will be used and disclosed, how it will be retained and secured, and what legal rights are associated with that data (including the rights of access, correction, and deletion). The policy also describes legal and contractual limitations on these rights. The specific rights and obligations of individuals living and working in different areas may vary by jurisdiction. Copyright © 2025 WorldQuant, LLC. All Rights Reserved. WorldQuant is an equal opportunity employer and does not discriminate in hiring on the basis of race, color, creed, religion, sex, sexual orientation or preference, age, marital status, citizenship, national origin, disability, military status, genetic predisposition or carrier status, or any other protected characteristic as established by applicable law.

Location: Limassol; Athens Workplace: onsite The Role:  We are looking for a driven and analytical SEO Content Writer to support the growth and performance of the Group's media publishing partnerships through effective SEO strategies. In this role, you will identify organic growth opportunities, optimise content and website performance, and collaborate with cross-functional teams to improve visibility, traffic quality, and conversions across partner media websites. You will also help ensure our partner content performs effectively across traditional search engines and emerging AI-powered discovery platforms. The main responsibilities of the position include: Analyse partner website and content performance to identify opportunities to improve organic visibility, user engagement, traffic quality, and conversions. Conduct keyword, competitor, and search intent research to develop SEO strategies and content roadmaps aligned with partner objectives and business priorities. Create and optimise SEO-focused content, including comparison pages, reviews, landing pages, product descriptions, and industry articles, while ensuring compliance and alignment with user search intent. Optimise on-page SEO elements, identify content gaps, and enhance existing content to improve search visibility, user experience, and conversion performance. Monitor SEO performance and provide data-driven insights and recommendations to maximise organic growth across partner websites. Conduct international SEO research to identify opportunities across priority markets and support regional content strategies. Collaborate with the SEO, Partner Relations, Business Development, and Content Marketing teams to support SEO initiatives across partner publishing websites. Stay up to date with SEO trends, search engine algorithm updates, AI-powered search developments, and emerging technologies to continuously improve performance. Main requirements: Bachelor's degree in marketing, Business, Communications, Finance, or related field. At least 4 years of experience in SEO, content writing and optimisation,  or a similar role, with hands-on experience driving organic growth. Experience managing SEO initiatives across multiple websites or another performance-driven digital environment. Proven experience creating and optimising SEO-driven content, including articles, reviews, landing pages, and other conversion-focused assets. Strong knowledge of SEO best practices, search engine algorithms, keyword research, and SEO tools such as Google Analytics, Semrush, and Similarweb. Strong analytical, writing, and communication skills, with the ability to translate data into actionable insights and create engaging, user-focused content. Excellent organisational skills, attention to detail, and the ability to manage multiple priorities in a fast-paced environment. A proactive mindset, strong sense of ownership, and the ability to collaborate effectively with cross-functional teams. Excellent verbal and written communication skills in English. Benefit from: Attractive remuneration package plus performance related reward Private health insurance Corporate pension fund Intellectually stimulating work environment Continuous personal development and international training opportunities The Hiring Experience: What Awaits You Let’s Connect – Intro Chat with Talent Acquisition Deep Dive – First Interview with Your Future Team Bring It to Life – Role-Specific Take-Home Task Final Connection – Final Interview All applications will be treated with strict confidentiality!   By submitting this application, I confirm that I have read and agree to the terms of the Privacy and Data Protection Notice and the Confidentiality Undertaking.

Location: Kuala Lumpur, Malaysia About Us Established in 2018, Bybit is one of the world’s leading cryptocurrency exchanges and digital financial platforms, serving over 80 million users across more than 200 countries and regions. Powered by world-class technology and a user-first mindset, Bybit delivers a seamless ecosystem across trading, payments, wealth management, custody, institutional services, and Web3 — connecting users to the future of digital finance. Our core values define how we build. We listen, care and improve to create products and experiences that put users first. Backed by a global team of ambitious builders, problem-solvers, and innovators, we foster a high-performance and fast-moving environment where talent is empowered to drive real impact at the global scale. Supported by 24/7 multilingual customer service and a strong commitment to innovation, we are shaping the future of finance through technology, collaboration, and bold execution. Today, Bybit is recognized as one of the most trusted and transparent platforms in the digital asset industry, continuing to expand its global presence while building the infrastructure for the next generation of financial services. Key Responsibilities 1. Recommendation Engine & Full-Pipeline Development Multi-stage Engine Development: Own the development and refactoring of high-concurrency, low-latency recommendation serving engines, powering the full pipeline of multi-channel recall (two-tower/collaborative filtering/ANN vector retrieval) → coarse ranking → fine ranking → re-ranking. Compute Tiering & Strategy Engine: Implement dynamic compute trimming and degradation mechanisms for dynamic Ul personalization and global strategy dispatch, ensuring core engine stability under extreme traffic spikes. 2. Real-time Feature Engineering & Data Consistency Governance Real-time Feature Pipeline: Build high-throughput, low-latency real-time feature streams on Kafka/Flink, enabling minute-level/second-level user pehavioral feature updates and dynamic sliding-window aggregations. Feature Store: Contribute to the development of unified online/offline feature storage with stream-batch convergence architecture; deeply govern industrial-grade pain points such as "online/offline feature inconsistency" and "feature time-travel leakage," systematically improving online/offline feature consistency. 3. Large-scale Retrieval & Vector Infrastructure Optimization Vector Retrieval System: Own the construction and optimization of large-scale vector retrieval systems (Faiss/Milvus/NSW) supporting candidate pools from tens of thousands to milions, lead index structure parameter tuning, achieving P99 retrieval latency < 100ms. Multi-source Heterogeneous Indexing: Build unified Embedding Pipelines and high-performance inverted index services covering trading products, news, KOL content, on-chain signals, and other heterogeneous data sources. 4. High-performance Model Inference & Compute Optimization Deep Model Engineering: Own high-performance online deployment and operator optimization of complex deep ranking models (e.g., DIN/SIM sequential models, MMoE/PLE multi-objective deep models). Inference Graph & Compute Governance: Solve compute explosion in multi-task/multi-objective online inference through inference optimization (quantization, graph optimization, batching strategies) - targeting fine-ranking P99 latency < 200ms. 5. System Performance, Global Observability & Experimentation Infrastructure High Availability & SLO: Ensure global recommendation service P99 latency < 200ms and system availability > 99.9%; write comprehensive overload protection, thread isolation, and disaster recovery degradation code. Global Distributed Tracing: In complex multi-region/multi-site/multi-language cross-border IDC environments, build and maintain end-to-end distributed tracing and monitoring systems (e.g.,Jaeger/Prometheus), establishing minute-level root cause attribution and fault localization mechanisms. Experimentation Platform Engineering: Contribute to A/B experiment traffic-splitting platform upgrades, engineering CUPED variance reduction and sequential testing mechanisms to reduce sample size requirements and accelerate algorithm iteration pipelines. Requirements Industrial-grade Hands-on Experience: 5+ years of recommendation system engineering at consumer-scale internet companies; must have deeply participated in or led architecture refactoring or launches of realtime recommendation systems serving tens of millions of users at scale. Proven experience building recommendation systems from 0→1 (not just maintaining mature systems) is strongly preferred. Mastery of Engineering Foundations: Exceptionally solid low-level CS fundamentals; proficient in at least one of Go/Java/C++ (Go preferred given current stack; C++ experience a plus for future engine optimization); familiar with PyTorch/TensorFlow model online inference and deployment optimization. Deep Expertise in Big Data & Retrieval: Hands-on with Spark/Flink/Kafka stack, with real experience solving stream computing latency and data backlog issues; proficient in Milvus/Faiss cluster deployment and tuning. Engineering Perspective on Algorithms: Deep understanding of computational complexity and online bottlenecks of core algorithms (collaborative filtering, two-tower recall, multi-objective optimization MMoE/PLE); ability to interface smoothly with algorithm teams for high-quality, efficient engineering translation. Excellent System Design Capability: Proven experience in actual development and core module design of recommendation platforms, feature platforms, experimentation platforms, or high-performance RPC frameworks at top-tier companies. Why Join Us At Bybit, we are committed to fostering a supportive and enriching work environment. Our benefits include: - Study Growth Fund: We support your professional development and continuous learning. - Internal Events: Participate in regular team-building activities, workshops, and events designed to promote collaboration and innovation. - Global Collaboration: Be part of a diverse, international team, working alongside colleagues from around the world. - Career Advancement: Access opportunities for growth and advancement within a rapidly expanding global company. - Internal Mobility: Grow with us- Your long-term development is important to us. We offer internal job opportunities to help build your career path.

Location: Belarus; Serbia; Georgia; United Arab Emirates; Kazakhstan We are hunting for a talented C/C++ Software Engineer who genuinely loves working with complex data feeds and isn't intimidated by high-stakes technical hurdles. In the world of quantitative trading, data is our lifeblood—meaning our quality standards are incredibly high and the volume of incoming data is massive. This role isn't just about writing code; it's about navigating intricate edge cases and mastering one of the most demanding layers of our engineering infrastructure. If you are someone who enjoys diving deep into technical documentation, obsesses over the details, and takes immense pride in robust engineering, you will thrive here. What will you do: Expand Exchange Connectivity: Build and integrate robust gateways to connect with new financial exchanges globally. Optimize Performance: Fine-tune existing data connectors to minimize ingestion latency and maximize data throughput. Evolve Data Models: Implement support for new and emerging data structures and asset types within our data pipeline. Refactor for Scale: Modernize and re-architect existing solutions to ensure our infrastructure effortlessly scales alongside growing market volumes. Requirements Modern C++ Expertise: Strong hands-on experience writing clean, efficient code using modern standards ( C++17/20 ). High-Throughput Architecture: A proven track record of managing, parsing, and processing massive streams of incoming real-time data. Concurrency & Hardware Savvy: A deep understanding of multithreaded programming, concurrent systems, and CPU memory models. Networking & Systems Mastery: A solid grasp of network protocols, communication layers, and Linux system internals. CS Fundamentals: Strong foundational knowledge of core algorithms and data structures. Global Collaboration: A professional level of written and spoken English to seamlessly partner with our international team. Deep expertise in ultra-low latency, sub-microsecond real-time development. Prior engineering experience in High-Frequency Trading (HFT), telecom routing, or high-performance game engines. Benefits Immediate Impact: Dive into fascinating technical problems featuring ultra-fast feedback loops. Elite Global Network: Collaborate with a welcoming, exceptionally brilliant team of international professionals. Top-Tier Infrastructure: Gain access to state-of-the-art hardware and cutting-edge technological innovations. Ultimate Work Freedom: Work 100% remotely from anywhere on Earth, with full open-door access to any of our physical global offices whenever you like. Premium Perks: Enjoy a flexible schedule, an industry-leading 40 paid days off , and a highly competitive compensation package.

Location: Remote (Mexico) Come join Karat's Interview Engineer Community! Karat is always seeking talented engineers to join our Community. If you are interested in being considered for a future Interview Engineer opportunity, please submit your application to this posting. This is a contractor/freelancer opportunity, and work is compensated based on tasks performed. Currently, we are only accepting applications from candidates in the countries on our website , and require that resumes be submitted in English. What Interview Engineers do: Interview Engineers facilitate technical interviews with software developers around the world. As an Interview Engineer, you will create inclusive hiring processes by mitigating bias, improving hiring signals, and completing objective evaluations. These skills are critical to hiring and managing teams in startups and large enterprises. As a Karat Interview Engineer, you will: Interview— Facilitate an interview through Karat's platform. Create an enjoyable candidate experience while you evaluate a candidate's fundamental coding skills and technical knowledge. Evaluate— Provide input on the candidate's performance, coding style, communication skills, knowledge question answers, and coding approach. Partner— Collaborate with Karat to test content, processes, and products. The experience you will bring: 3+ years of experience as a Software Developer or Engineer Excellent English communication skills (written and oral) with a high level of professionalism and interpersonal skills Reliable access to a working webcam, microphone, and a stable Internet connection Experience conducting technical interviews is preferred (e.g., data structures, algorithms) While we review your application, learn more about life as an Interview Engineer by watching this video! Additional Information By applying for a position, you consent to the processing of your personal data in accordance with Karat’s Employee and Contractor Privacy Notice found here .

Location: In-Office About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: Austin, TX | New York, NY | San Francisco, CA | Seattle, WA or London, UK About the Department Emerging Technologies & Incubation (ETI) is where new and bold products are built and released within Cloudflare. Rather than being constrained by the structures which make Cloudflare a massively successful business, we are able to leverage them to deliver entirely new tools and products to our customers. Cloudflare’s edge and network make it possible to solve problems at massive scale and efficiency which would be impossible for almost any other organization. About the project Cloudflare Basin became generally available during Birthday Week 2026. We are looking to extend engineering teams working on Basin Catalog and Basin SQL: Basin Catalog manages Iceberg table metadata. It also runs ongoing table maintenance, such as compaction, to keep queries fast. Basin SQL is our in-house distributed SQL engine. It's built to run petabyte-scale queries over data stored in R2. What you'll do As a Senior Engineer focused on Cloudflare's storage and database products, you will shape the future of industry-leading services that redefine what is possible for developers. We don't just copy what other cloud providers do; we work backward from developer needs, reimagining solutions by leveraging our unique global network. This network brings data closer to users for unparalleled performance, allows for granular control to meet data residency requirements, and provides a platform for truly innovative data products. You will own your code from inception to release, delivering solutions at all layers of the software stack to empower Cloudflare customers. On any given day, you might be architecting a new globally distributed data consistency model, optimizing storage engine performance, or designing a novel API for a new data-centric product. You can expect to interact with a variety of languages and technologies including, but not limited to JavaScript, Typescript, Rust, and C++. Examples of desirable skills, knowledge and experience Minimum 5 years of experience working with distributed systems. Experience building and managing high volume software applications. Solid understanding of computer science fundamentals including data structures, algorithms, and object-oriented or functional design. Knowledge of at least one modern strongly-typed programming language: we primarily use Rust, TypeScript, and Go. Experience debugging, optimizing and identifying failure modes in a large-scale distributed system. Bonus Points Experience building and managing a large scale data storage platform. Experience working in low-latency real time environments such as game streaming, game engine architecture, high frequency trading, payment systems Experience working in a non-garbage collected language such as Rust or C++. Experience writing Javascript and Typescript.Deep Linux / UNIX systems knowledge. Compensation Compensation may be adjusted depending on work location. For Bay Area based hires: Estimated annual salary of $194,000 - $266,000 For New York City, New Jersey, Washington, Washington DC, and California (excluding Bay Area) based hires: Estimated annual salary of $185,000 - $254,000 Equity This role is eligible to participate in Cloudflare’s equity plan. Benefits Cloudflare offers a complete package of benefits and programs to support you and your family.  Our benefits programs can help you pay health care expenses, support caregiving, build capital for the future and make life a little easier and fun!  The below is a description of our benefits for employees in the United States, and benefits may vary for employees based outside the U.S. Health & Welfare Benefits Medical/Rx Insurance Dental Insurance Vision Insurance Flexible Spending Accounts Commuter Spending Accounts Fertility & Family Forming Benefits On-demand mental health support and Employee Assistance Program Global Travel Medical Insurance Financial Benefits Short and Long Term Disability Insurance Life & Accident Insurance 401(k) Retirement Savings Plan Employee Stock Participation Plan Time Off Flexible paid time off covering vacation and sick leave Leave programs, including parental, pregnancy health, medical, and bereavement leave What Makes Cloudflare Special? We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet. Project Galileo : Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost. Athenian Project : In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states. 1.1.1.1 : We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers. Sound like something you’d like to be a part of? We’d love to hear from you! Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs.  More details about this will be available at that stage of the interview process. This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license. Cloudflare is proud to be an equal opportunity employer.  We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness.  All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law. We are an AA/Veterans/Disabled Employer. Cloudflare provides reasonable accommodations to qualified individuals with disabilities.  Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment.  If you require a reasonable accommodation to apply for a job, please contact us via e-mail at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.

Location: Barcelona, Spain Workplace: hybrid About Adapt   Adapt, a Welo Global brand, is an international digital performance marketing agency focused on driving the success of digital content across platforms and markets. We offer our customers a unique combination of global services designed to support their growth from strategy all the way through to execution, production, and performance measurement. With a collaborative and inclusive environment, you will join a unique culture which celebrates difference and embraces diversity. You will play a key role in developing strong relationships and shared ethos, whilst at the same time benefiting from a wide range of career opportunities, training, and flexibility for work-life balance.     Our culture is built on curiosity, and we are looking for team members who have a passion for learning about the developments in the industry, their clients, and their peers. In return, we offer the opportunity to develop your ability and exposure to a wide range of clients from growth-minded startups all the way up to global enterprise clients. Our client base is predominantly focused on B2B businesses, though we do also support customers in the e-commerce and retail space. Regardless of vertical, Adapt offers dynamic and diverse challenges that foster creativity, innovation and application of knowledge to create client solutions. Overview At Welo, an SEO Account Specialist leads strategic SEO initiatives across a diverse portfolio of global clients. You’ll leverage technical expertise and a data-driven mindset to develop, execute, and optimise comprehensive SEO strategies that drive measurable business outcomes. Job Description Develop and contribute to comprehensive SEO strategies, including technical audits, content optimisation, and off-site initiatives. Oversee SEO performance tracking and deliver actionable insights through advanced reporting. Collaborate cross-functionally with content, development, and localisation teams to implement SEO best practices. Help identify opportunities to further improve efficiency or quality of work delivered. Own the day-to-day delivery of SEO work against customer objectives. Lead comprehensive SEO audits, identifying and addressing technical issues. Manage and optimise on-page and off-page SEO campaigns. Develop and execute advanced keyword strategies for content optimisation. Oversee and refine link-building strategies to enhance domain authority. Analyse and report on SEO performance metrics, providing actionable insights. Stay updated with the latest SEO trends and algorithm changes. Required experience and background Ideally 2+ years experience in SEO. Any prior exposure to other digital marketing channels is a plus. Ability to work collaboratively with cross-functional teams. Up-to-date knowledge of SEO trends and algorithm changes. Advocate and demonstrable impact on insights and delivery. Ideal Skillset Ability to conduct comprehensive SEO audits and competitive analysis. Experience in leading SEO projects and initiatives. Strong data analysis skills to derive actionable insights and optimise strategies. Experience in developing and executing advanced keyword strategies. Welocalize is committed to equal opportunities and in compliance with the General Law on the Rights of People with Disabilities, this vacancy is also available and we encourage to those candidates who have a disability certificate (equal to or greater than 33%) to apply.

Location: Singapore, Singapore OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa. 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 Team The Trading Strategies Mobile Team owns OKX's Trading Bot and Copy Trading experiences across iOS and Android. On the Trading Bot side we build the full suite of strategy bots (Spot & Futures Grid, Spot & Futures DCA, Recurring Buy, Smart Portfolio, Smart Arbitrage, Signal Bot, DCD, and AI-powered bots) that let millions of users automate their trading across spot and derivatives. On the Copy Trading side we let users discover top traders and automatically mirror their positions. It's a large, high-complexity mobile surface built on a shared Rust/UniFFI core, and we're actively moving performance-critical paths to Rust so the logic is shared across platforms. We care deeply about engineering quality. A big, fast-moving codebase demands high standards for architecture, stability, and performance, so we invest consistently in review rigor, knowledge-sharing, and technical training to keep raising the bar. We're also a growth team, working closely with Product and Design to ship new strategies, improve the automated trading experience, and most recently build AI-driven bot experiences. We're at an exciting inflection point, bringing AI into both our product and our engineering workflows. If you're energized by taming complexity at scale, driving technical excellence and business impact in equal measure, and shaping how automated crypto trading works for millions, this is the team to be on. What You'll Be Doing Own the technical architecture and delivery of the Android/iOS Trading Bot codebase as your primary focus, while also contributing to Copy Trading as our second core surface, raising code quality, stability, and performance across both and across the flows that create, manage, copy, and follow strategies. Lead large-scale technical initiatives end to end, from the Kotlin/Swift-to-Rust/UniFFI migration to modularization and binary-compatibility discipline across the Trading Bot and shared-core repositories, and the work to cut crash, ANR, and startup hotspots. Join product requirement discussions, shape well-reasoned technical solutions, and protect product performance, stability, and user experience. Partner with product and business to drive the Trading Bot roadmap, from new strategy types to sharing, attribution, and growth features, to AI-powered bot experiences, turning technical leverage into business impact. Stay close to industry trends, keep refining the technical architecture, and grow the team's engineering capabilities through training and knowledge-sharing. Mentor engineers and lead by influence, lifting the whole team's technical proficiency. Lead the team in exploring the integration of AI into business scenarios, driving product and technology innovation. What We Look For In You Staff/Principal level Android/iOS expertise. 8+ years building and shipping production Android/iOS apps, with deep Kotlin and a strong command of multi-module architecture, dependency and binary-compatibility constraints, and platform performance (ANR, crash, startup, memory). A track record of leading mid to large projects end to end. You hold a high bar for architecture and engineering quality, and you've raised that bar on a large, legacy-heavy codebase with results to show for it. Technical strategy paired with business sense. You can set technical direction and work with product to turn it into roadmap and revenue. You own outcomes, not just code. A trading or fintech background. Client-side experience at a crypto exchange, brokerage, or fintech app, with familiarity in core domains like order placement, market data, and asset management. Automated or algorithmic trading is a strong plus. Influence and mentorship. You make the engineers around you better through review, design guidance, and knowledge-sharing, and you build alignment across teams without leaning on authority. Nice-To-Haves Cross-language or Rust experience. Rust, UniFFI/FFI, or iOS Swift/Obj-C, and comfort owning a shared cross-platform core. Automated-trading domain depth. Hands-on with trading bots, grid or DCA strategies, perpetuals and derivatives, copy or social trading, or market-making and arbitrage, or trading in general. AI engineering experience. LLM fundamentals, prompt engineering, RAG, or agent workflows, and an eye for bringing AI into both the product and the engineering workflow. Performance and reliability tooling. APM, tracing, and crash or ANR triage at scale. Scaled CI/CD . Experience with large monorepo or multi-module release systems, such as MMR-style merge pipelines. Client-side team leadership. You've mentored or led a client-side team and can drive cross-team collaboration and technical review. 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! 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 .

Location: Remote (United Kingdom) Come join Karat's Interview Engineer Community! Karat is always seeking talented engineers to join our Community. If you are interested in being considered for a future Interview Engineer opportunity, please submit your application to this posting. This is a contractor/freelancer opportunity, and work is compensated based on tasks performed. Currently, we are only accepting applications from candidates in the countries on our website , and require that resumes be submitted in English. What Interview Engineers do: Interview Engineers facilitate technical interviews with software developers around the world. As an Interview Engineer, you will create inclusive hiring processes by mitigating bias, improving hiring signals, and completing objective evaluations. These skills are critical to hiring and managing teams in startups and large enterprises. As a Karat Interview Engineer, you will: Interview— Facilitate an interview through Karat's platform. Create an enjoyable candidate experience while you evaluate a candidate's fundamental coding skills and technical knowledge. Evaluate— Provide input on the candidate's performance, coding style, communication skills, knowledge question answers, and coding approach. Partner— Collaborate with Karat to test content, processes, and products. The experience you will bring: 3+ years of experience as a Software Developer or Engineer Excellent English communication skills (written and oral) with a high level of professionalism and interpersonal skills Reliable access to a working webcam, microphone, and a stable Internet connection Experience conducting technical interviews is preferred (e.g., data structures, algorithms) While we review your application, learn more about life as an Interview Engineer by watching this video! Additional Information By applying for a position, you consent to the processing of your personal data in accordance with Karat’s Employee and Contractor Privacy Notice found here .

Location: Russia; Belarus; Georgia; Serbia; Kazakhstan We’re looking for a Team Leader who cares deeply about people, supports their growth, and creates an environment where the team can thrive and deliver their best work. The ideal candidate knows how to assign different types of tasks to match individual strengths, ensures that each team member has a clear role and contributes effectively, and supports the team’s development and performance. Responsibilities: Own communication with stakeholders and other teams, structure requirements, set priorities, and assure delivery commitments. Manage the team effectively, understanding each member’s strengths and weaknesses, and assign tasks based on their abilities and development goals. Own team capacity planning—tracking load, forecasting needs, and ensuring new hires, processes and tools are in place before capacity becomes a bottleneck. Conduct regular 1:1 meetings, performance reviews, and implement measures to improve team performance as needed. Requirements Experience facilitating performance reviews, feedback sessions, and professional development planning. Experience conducting code reviews focused on maintaining quality and supporting engineers’ growth. Proven experience participating in hiring and interviews to help build strong, well-balanced teams. Understanding of Linux system. Knowledge of algorithms and data structures. Ability to design and oversee the architecture of software systems, ensuring scalability, maintainability, and performance. Decent level of written and spoken English to work in an international environment. In-depth knowledge and expertise in real-time development with sub-microsecond latency. Experience in HFT, telecommunication, game development, or any other field that works with limited resources and optimization. Solid understanding of modern C++ development and engineering processes. Knowledge of networks and interaction protocols. Proficient in using version control systems and continuous integration/continuous deployment (CI/CD) tools. Benefits A welcoming group of highly qualified international professionals Cutting-edge hardware and technology Work remotely from anywhere in the world Access any of our global offices anytime Flexible schedule 40 paid days off Competitive salary

Location: Cairo, Egypt; Alexandria, Egypt Workplace: hybrid Yassir is the leading super App in the Maghreb region set to changing the way daily services are provided. It currently operates in 45 cities across Algeria, Morocco and Tunisia with recent expansions into France, Canada and Sub-Saharan Africa . It is backed (~ $200M in funding ) by VCs from Silicon Valley, Europe and other parts of the world. We offer on-demand services such as ride-hailing and last-mile delivery. Building on this infrastructure, we are now introducing financial services to help our users pay, save and borrow digitally. Helping usher the continent into a digital economy era. We’re not just about serving people - we’re about creating a marketplace to bring people what they need while infusing social values. About the role We are looking for a senior front-end developer to join our team and support our growth and expansion. You will be part of the engineering team, working with a high-quality code base and the latest tools, and you will promote your skills to be an expert in complex frontend development in React.JS. Your primary focus will be the development of web applications and their integration with back-end services. You will be working alongside other engineers and developers working on different layers of the infrastructure. About your role as Front-End Engineer - (React) Design and build web applications using React.js Ensure the performance, quality, and responsiveness of applications Collaborate with a team to define, design, and ship new features Identify and correct bottlenecks and fix bugs Help maintain code quality, organization, and automatization Participate in brainstorming sessions and contribute ideas to our technology, algorithms and products. Work with the engineering and design teams to understand end-user requirements, formulate use cases, and then translate that into a pragmatic and effective technical solution Dive into difficult problems and successfully deliver results on schedule About your experience BSc/MSc in Engineering, Computer Science or relevant field. Minimum 5 years of experience in a similar role Demonstrated ability to prioritize, self-start, contribute under pressure and meet tight deadlines Highly organized, creative and critical thinker Comfortable working in an entrepreneurial environment Solid OOP and software design knowledge – you should know how to create software that is extensible, reusable and meets desired architectural objectives Must have technical skills: Language: Javascript Framework: React.JS, Express.JS Familiarity with cloud message APIs and push notification Web architecture: Rest and restful APIs, micro-services Version control: GIT Containers: Docker, Kubernetes Caching, Redis server Scaling, Web load balancing Why you should join Yassir 😎 You will be part of one of the first Algerian startups to go through the Y Combinator program and one of the fastest-growing tech companies in North Africa. We are current in +60 cities (Algeria, Tunisia, Morocco, and Senegal) 💸 Attractive salary and you even get a stake in the company 🚉 Subsidized public transit pass 🤙🏽Have a lasting impact on our company's culture 🚀 Perfect timing with renowned investors to build something great 📈 Extremely steep learning curve with own responsibility and intensive guidance 💯 Make a real impact on the world by helping us bring affordable financial and on-demand services to millions of Africans At Yassir, we believe in the power of diversity and the importance of an inclusive culture. So, if you're ready to bring your unique perspective and experiences to the table, then we're excited to listen. Don't just apply for a job, come and be a part of our journey. Let's create a better tomorrow together. We look forward to receiving your application! Best of luck, Your Yassir TA Team

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... We’re looking for an iOS Software Engineer II to join our Momentum team under the International Growth area. In this role, you’ll build and ship features that drive user growth and deliver high-quality learning experiences to millions of learners worldwide. You’ll work closely with product managers and designers to create engaging experiences for users. You’ll gain experience working on iOS, running experiments, and collaborating cross-functionally to improve key metrics like daily active users (DAU). 🧠  You will... Collaborate with product managers and designers to drive user growth Develop, release, and maintain native iOS applications, primarily in Swift Contribute to code reviews and collaborate across teams to ensure quality and scalability ✅  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 2–5 years of experience programming in Swift Dedication to our mission of universally available education Relocation to Beijing, China. This position is based in Beijing. ⭐  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 Proficient in both spoken and written English. 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: ¥673,726 — ¥911,512 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: Hong Kong, Hong Kong SAR OKX will be prioritising applicants who have a current right to work in Hong Kong, and do not require OKX's sponsorship of a visa. Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong. 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 We are looking for a Senior Staff Mobile Engineer to join our P2P & Fiat team, where you will own the mobile engineering for OKX’s peer-to-peer trading and fiat payment experiences across multiple markets. This is a high-ownership role sitting at the intersection of mobile engineering and cross-border payments—you will work closely with compliance, legal, and regional business teams to build localised, regulation-aware payment flows for users across Southeast Asia, LATAM, MENA, and beyond. You bring deep familiarity with P2P trading mechanics, cross-regional fiat payment integrations, and the compliance considerations that govern them. You are also fluent in AI-assisted development and bring the discipline to build, maintain, and continuously improve your own AI engineering workflows. What You'll Be Doing Own the mobile engineering for P2P trading flows, including trading channel mechanics, payment methods, and end-to-end buy and sell transaction journeys. Build and maintain cross-regional fiat payment integrations, including local bank transfers, e-wallets, and third-party PSP integrations across markets such as Southeast Asia, LATAM, and MENA. Ensure mobile payment flows and user data handling comply with local and international regulatory requirements, including KYC tiers, transaction limits, and regional compliance constraints. Collaborate closely with compliance, legal, product, and regional market teams to translate local regulatory requirements into reliable, user-friendly mobile experiences. Drive technical decision-making on payment architecture, clearly articulating trade-offs across delivery speed, maintainability, and compliance. Apply AI coding tools actively in your workflow—not only for code generation, but also to build and maintain repeatable personal AI development workflows. Mentor engineers on the team and contribute to a culture of ownership, technical rigour, and high engineering standards. What We Look For In You 5+ years of professional software engineering experience, including hands-on experience building and maintaining production mobile applications. Level will be calibrated based on technical depth, scope, and demonstrated impact. Proficiency in either iOS development using Swift or Objective-C, or Android development using Kotlin or Java. Solid software engineering fundamentals, including data structures, algorithms, API design, testing, debugging, and system design. Experience delivering reliable mobile features and addressing practical challenges in areas such as performance, stability, architecture, or user experience. Ability to take ownership of engineering work, collaborate effectively with others, and drive solutions from design through production. Good judgment when balancing delivery speed, product requirements, technical quality, and maintainability. Nice-To-Haves Experience in crypto, fintech, digital payments, or another regulated product environment. Experience building large-scale or multi-market consumer mobile applications. Experience in one or more areas such as mobile architecture, infrastructure, performance, security, or cross-platform development. Practical experience using AI-assisted development tools and validating AI-generated output. 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! #LI-ML1 #LI-ONSITE Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong. 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 .

Location: Global - Remote About the role As a Data Scientist at Sporty, you will build and productionize data-driven ML systems that enhance personalization, search, and recommendation experiences, with a clear focus on measurable business impact. The role combines advanced analytics, Python-based modelling, and cloud engineering to solve real-world problems at scale in a fast-paced product environment. Our Stack SQL Python AWS/Azure/GCP What you'll be doing Utilize advanced algorithms and data mining techniques to build personalized recommendation systems, optimizing product and service recommendations to enhance user experience and improve business conversion rates. Develop and productionize ML/AI systems across multiple domains — including search ranking, recommendation, and content intelligence — that directly impact user growth and business outcomes. What you'll bring Hands-on experience applying statistical and ML models to real business problems, with measurable impact on revenue or key business outcomes Advanced understanding of Python and the quantitative analysis ecosystem in Python Strong foundation in probability theory, statistics, machine learning, and linear algebra 2+ years of experience as a data scientist, quantitative researcher, quantitative analyst, or another relevant role Knowledge of SQL and experience with relational databases Proficient with AI tools and agents as part of daily development workflow; this role regularly leverages AI-assisted development to accelerate delivery Degree in Applied Mathematics, Computer Science, Financial Engineering, Technology, or Engineering Project and stakeholder management experience is preferred Even better if you have Apache Spark Experience working in cloud platforms (AWS, GCP, Microsoft Azure) Relevant knowledge or experience in the gaming industry Solid computer science background What’s in it for you Sporty is a remote first company in pursuit of sustainability A competitive salary + individual performance based bonuses every quarter 28 days paid annual leave Our core working hours are 10am-3pm in your local time zone with flexibility outside of this Referral bonuses & flash bonuses Top of the line equipment Annual company retreats to provide great internal networking opportunities Interview Process Remote video screening with our Talent Acquisition Team Online home assignment Remote video interview with Team Members (3x45 Mins) If you're interested, we encourage you to apply! Every application is reviewed by a member of our team (AI is not used in our recruitment process), and we aim to respond within 48 hours. *We are committed to maintaining a fair, secure and authentic recruitment process. Applications submitted using false, misleading or fraudulent information, including impersonated or fake profiles, will not be considered. Where reasonably necessary to protect the integrity and security of our recruitment process, we may verify a candidate’s identity and/or the accuracy of information provided during the recruitment process. Any such checks will be carried out in a proportionate and appropriate manner and in accordance with applicable data protection and employment laws.