Location: Remote Canada
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.
Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.
The Capacity Modeling team ensures Affirm can safely handle forecasted traffic—especially during peak sales events—by translating demand forecasts into concrete, testable capacity plans. They build and maintain statistical capacity models that map traffic inputs (e.g., checkout volume, app opens, batch/job activity) to resource outputs (CPU, memory, connections) and then convert those forecasts into recommended capacity settings such as pod counts, HPA ranges, and/or infrastructure sizing changes across regions and environments.
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 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin.
· You have a track record of developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes.
·
You have experience supporting scale up and down of large scale sales event such as Prime Day, Black Friday Cyber Monday, or other sales holidays
·
You have tuned autoscaling, CPU/Memory, and multi-threading for compute type workloads.
· 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.
Base Pay Grade - N
Equity Grade - 6
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 monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).
CAN base pay range per year: $153,000 - $213,000 CAD.
This remote role is open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan.
#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: Remote Canada
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.
Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.
Affirm's engineering team is building a large-scale, highly available, and global infrastructure that is shared across multiple financial products. Ensuring that our infrastructure is accessible to all engineers is critical to the success of the business. We pride ourselves on our culture across engineering of engaging in thorough technical design review, operational excellence, and capable incident response and analysis.
Affirm runs its workloads on more than 85 Amazon EKS clusters, and the number is growing. The Workload Safety team creates one set of standards for how workloads are configured and run, so Affirm can grow globally and still meet its availability and latency SLOs. The team identifies the industry best practices Affirm needs, drives their adoption across every engineering team on EKS, and enforces them through policy and automation so new workloads comply by default.
As a senior engineer on the team, you will help set its roadmap, decide which standards matter most, and build a repeatable way to take each standard from research to enforcement across the fleet.
What you’ll do
Define and evolve workload safety standards for Affirm's EKS fleet, such as CPU and memory settings, workload isolation and placement, tolerance for disruption, graceful termination to name a few
Own each standard end to end: research and prototyping, white-glove onboarding for early adopters, self-service guidance for everyone else, and automation and policy guardrails that keep every workload compliant from day one
Lead cross-team initiatives from design through fleet-wide rollout, mentor other engineers, and set a high bar for design, code review, and operational readiness
Isolate workloads by criticality and resource profile so one misbehaving workload cannot degrade critical paths such as checkout
Fix stuck workloads and node lifecycle problems, such as pods that ignore termination signals, pod disruption budgets that block node cycling, and Karpenter timeouts that prevent bin packing and the removal of excess capacity
Determine the safe operating limits of each cluster (pod count, node count, API server request volume), keep clusters within them, and develop control plane scaling patterns for bursty workloads such as scheduled batch jobs and large deployments
Analyze workload resource profiles across the fleet (CPU, memory, disk, network) to guide EC2 instance type strategy, and automate that analysis as workloads change
Measure each standard's impact on availability, latency, risk, and cost, and use the results to prioritize the roadmap
Participate in on-call for Kubernetes runtime issues across the fleet, and turn recurring failure patterns into roadmap items
Work closely with the teams that run services, batch jobs, and ML workloads on EKS, and with the deployment, capacity, and SRE teams
Keep up with new best practices from the Kubernetes community and adapt them to Affirm's needs
What we look for
5+ years of experience running Kubernetes in production at scale, ideally Amazon EKS across many clusters
Deep understanding of Kubernetes resource management and scheduling: requests and limits, OOM and CPU throttling behavior, affinity and anti-affinity, taints and tolerations, and topology spread constraints
Solid grasp of the pod lifecycle and disruption management, including graceful termination, pod disruption budgets, and node draining
Experience enforcing configuration standards through admission control and policy-as-code (for example, OPA Gatekeeper or Kyverno)
Proficiency in Go or Python, including building production infrastructure software such as Kubernetes controllers, operators, or admission webhooks
Strong production debugging skills and a demonstrated ability to turn recurring incidents into systemic fixes
Track record of leading technical initiatives across multiple teams, driving adoption of shared standards, and mentoring other engineers
Experience quantifying the impact of infrastructure changes on availability, latency, and cost
Strong written communication, including standards and guidance that teams can adopt on their own
[**THE BELOW ARE INSTRUCTIONS FOR RECRUITERS.***
WHEN COPYING INTO WORKDAY, INCLUDE
ALL
OF THE TEXT BELOW.
DO NOT DELETE OR FILL OUT ANY OF THE INFORMATION BELOW.
]
[DELETE IF NOT APPLICABLE TO ROLE] For U.S. non-variable roles use the template below:
Base Pay Grade -
Equity Grade -
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% subsidized medical coverage, dental and vision for you and your dependents.)
USA base pay range (CA, WA, NY, NJ, CT) per year: $X - $X
USA base pay range (all other U.S. states) per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For U.S. variable roles use the template below:
Base Pay Grade -
Equity Grade -
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% subsidized medical coverage, dental and vision for you and your dependents.)
For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, which includes the annual base pay and the sales incentive target.
USA On Target Earnings (CA, WA, NY, NJ, CT) per year: $X - $X
USA On Target Earnings (all other U.S. states) per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For CAN/GBR roles use the template below:
Base Pay Grade -
Equity Grade -
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. [IF APPLICABLE] For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, which includes the annual base pay and the sales incentive target.
Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).
(CHOOSE ONE - CAN or GBR) base pay range per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For POL roles use the template below:
Total Rewards
We believe the people building honest financial products at Affirm should share in its success. That's why our total rewards are designed to support your health, growth, financial well-being, and future.
In service of our mission, we reward employees through a combination of base pay, equity (from parent company), and comprehensive benefits.
Base Pay Grade – N
$XXX-$XXX
Base pay ranges and placement within those ranges are determined based on several factors, including role, experience, and job-related skills.
In addition to base pay, all employees in this role are eligible to receive equity from the parent company each year. This means as Affirm’s parent company grows, employees have the opportunity to share in that growth financially.
Equity Grade – 4 (awarded in US Dollars)
Affirm Holdings, Inc. Equity Grade example
Equity grade: 2
New hire equity: $16,000-$24,000
Annual Refresh: $5,000
Reward equity: $0-$75,000
Affirm also provides flexible spending wallets to all employees for technology and wellbeing related needs, which are reimbursable up to 1390 zł per month.
In addition to your compensation, our comprehensive benefits are designed to support you and the people who matter most. Benefits include:
Competitive paid time off, paid public holidays, and additional paid Away Days to rest and recharge.
Comprehensive private healthcare through Lux Med's Platinum package.
A MultiSport card to support your health and well-being.
Learning and development programs to help you grow professionally.
Family healthcare support through Maven and parental leave support through Parentaly.
Mental well-being support through Lyra, including up to 12 confidential counseling or coaching sessions each year for you and your household members.
Financial well-being support through Northstar, with unlimited access to Certified Financial Advisors and planning tools at no cost to you.
Employee Resource Groups (ERGs) that foster connection and inclusion.
Eligibility for creative tax benefits, subject to applicable law, role, and company policy.
Location - Remote Poland
The majority of our roles can be located anywhere in Poland.
**This job description is not a contractual document, and is not intended to have binding force.**
LI-Remote
[DELETE IF NOT APPLICABLE TO ROLE] For ESP roles use the template below:
Compensation & Benefits
Base Pay Grade -
Equity Grade -
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 monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).
ESP base pay range per year: €X - €X
Additional benefits include:
• Flexible Spending Wallets for tech, food and lifestyle
• Away Days - wellness days to take off work and recharge
• Learning & Development programs
• Parental benefits
• Employee Resource & Community Groups
[ONLY KEEP THIS IF WE DO NOT SPONSOR THE ROLE] Please note that visa sponsorship is not available for this position.
[REMOVE IF POSTING IS NOT 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: Remote US
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.
Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.
Affirm's engineering team is building a large-scale, highly available, and global infrastructure that is shared across multiple financial products. Ensuring that our infrastructure is accessible to all engineers is critical to the success of the business. We pride ourselves on our culture across engineering of engaging in thorough technical design review, operational excellence, and capable incident response and analysis.
Affirm runs its workloads on more than 85 Amazon EKS clusters, and the number is growing. The Workload Safety team creates one set of standards for how workloads are configured and run, so Affirm can grow globally and still meet its availability and latency SLOs. The team identifies the industry best practices Affirm needs, drives their adoption across every engineering team on EKS, and enforces them through policy and automation so new workloads comply by default.
As a senior engineer on the team, you will help set its roadmap, decide which standards matter most, and build a repeatable way to take each standard from research to enforcement across the fleet.
What you’ll do
Define and evolve workload safety standards for Affirm's EKS fleet, such as CPU and memory settings, workload isolation and placement, tolerance for disruption, graceful termination to name a few
Own each standard end to end: research and prototyping, white-glove onboarding for early adopters, self-service guidance for everyone else, and automation and policy guardrails that keep every workload compliant from day one
Lead cross-team initiatives from design through fleet-wide rollout, mentor other engineers, and set a high bar for design, code review, and operational readiness
Isolate workloads by criticality and resource profile so one misbehaving workload cannot degrade critical paths such as checkout
Fix stuck workloads and node lifecycle problems, such as pods that ignore termination signals, pod disruption budgets that block node cycling, and Karpenter timeouts that prevent bin packing and the removal of excess capacity
Determine the safe operating limits of each cluster (pod count, node count, API server request volume), keep clusters within them, and develop control plane scaling patterns for bursty workloads such as scheduled batch jobs and large deployments
Analyze workload resource profiles across the fleet (CPU, memory, disk, network) to guide EC2 instance type strategy, and automate that analysis as workloads change
Measure each standard's impact on availability, latency, risk, and cost, and use the results to prioritize the roadmap
Participate in on-call for Kubernetes runtime issues across the fleet, and turn recurring failure patterns into roadmap items
Work closely with the teams that run services, batch jobs, and ML workloads on EKS, and with the deployment, capacity, and SRE teams
Keep up with new best practices from the Kubernetes community and adapt them to Affirm's needs
What we look for
5+ years of experience running Kubernetes in production at scale, ideally Amazon EKS across many clusters
Deep understanding of Kubernetes resource management and scheduling: requests and limits, OOM and CPU throttling behavior, affinity and anti-affinity, taints and tolerations, and topology spread constraints
Solid grasp of the pod lifecycle and disruption management, including graceful termination, pod disruption budgets, and node draining
Experience enforcing configuration standards through admission control and policy-as-code (for example, OPA Gatekeeper or Kyverno)
Proficiency in Go or Python, including building production infrastructure software such as Kubernetes controllers, operators, or admission webhooks
Strong production debugging skills and a demonstrated ability to turn recurring incidents into systemic fixes
Track record of leading technical initiatives across multiple teams, driving adoption of shared standards, and mentoring other engineers
Experience quantifying the impact of infrastructure changes on availability, latency, and cost
Strong written communication, including standards and guidance that teams can adopt on their own
[**THE BELOW ARE INSTRUCTIONS FOR RECRUITERS.***
WHEN COPYING INTO WORKDAY, INCLUDE
ALL
OF THE TEXT BELOW.
DO NOT DELETE OR FILL OUT ANY OF THE INFORMATION BELOW.
]
[DELETE IF NOT APPLICABLE TO ROLE] For U.S. non-variable roles use the template below:
Base Pay Grade -
Equity Grade -
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% subsidized medical coverage, dental and vision for you and your dependents.)
USA base pay range (CA, WA, NY, NJ, CT) per year: $X - $X
USA base pay range (all other U.S. states) per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For U.S. variable roles use the template below:
Base Pay Grade -
Equity Grade -
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% subsidized medical coverage, dental and vision for you and your dependents.)
For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, which includes the annual base pay and the sales incentive target.
USA On Target Earnings (CA, WA, NY, NJ, CT) per year: $X - $X
USA On Target Earnings (all other U.S. states) per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For CAN/GBR roles use the template below:
Base Pay Grade -
Equity Grade -
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. [IF APPLICABLE] For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, which includes the annual base pay and the sales incentive target.
Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).
(CHOOSE ONE - CAN or GBR) base pay range per year: $X - $X
[DELETE IF NOT APPLICABLE TO ROLE] For POL roles use the template below:
Total Rewards
We believe the people building honest financial products at Affirm should share in its success. That's why our total rewards are designed to support your health, growth, financial well-being, and future.
In service of our mission, we reward employees through a combination of base pay, equity (from parent company), and comprehensive benefits.
Base Pay Grade – N
$XXX-$XXX
Base pay ranges and placement within those ranges are determined based on several factors, including role, experience, and job-related skills.
In addition to base pay, all employees in this role are eligible to receive equity from the parent company each year. This means as Affirm’s parent company grows, employees have the opportunity to share in that growth financially.
Equity Grade – 4 (awarded in US Dollars)
Affirm Holdings, Inc. Equity Grade example
Equity grade: 2
New hire equity: $16,000-$24,000
Annual Refresh: $5,000
Reward equity: $0-$75,000
Affirm also provides flexible spending wallets to all employees for technology and wellbeing related needs, which are reimbursable up to 1390 zł per month.
In addition to your compensation, our comprehensive benefits are designed to support you and the people who matter most. Benefits include:
Competitive paid time off, paid public holidays, and additional paid Away Days to rest and recharge.
Comprehensive private healthcare through Lux Med's Platinum package.
A MultiSport card to support your health and well-being.
Learning and development programs to help you grow professionally.
Family healthcare support through Maven and parental leave support through Parentaly.
Mental well-being support through Lyra, including up to 12 confidential counseling or coaching sessions each year for you and your household members.
Financial well-being support through Northstar, with unlimited access to Certified Financial Advisors and planning tools at no cost to you.
Employee Resource Groups (ERGs) that foster connection and inclusion.
Eligibility for creative tax benefits, subject to applicable law, role, and company policy.
Location - Remote Poland
The majority of our roles can be located anywhere in Poland.
**This job description is not a contractual document, and is not intended to have binding force.**
LI-Remote
[DELETE IF NOT APPLICABLE TO ROLE] For ESP roles use the template below:
Compensation & Benefits
Base Pay Grade -
Equity Grade -
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 monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).
ESP base pay range per year: €X - €X
Additional benefits include:
• Flexible Spending Wallets for tech, food and lifestyle
• Away Days - wellness days to take off work and recharge
• Learning & Development programs
• Parental benefits
• Employee Resource & Community Groups
[ONLY KEEP THIS IF WE DO NOT SPONSOR THE ROLE] Please note that visa sponsorship is not available for this position.
[REMOVE IF POSTING IS NOT 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.
Команда безопасности ИИ ищет специалиста для whitebox-анализа LLM-приложений, AI-агентов, RAG и векторных БД. Нужно выявлять prompt injection и другие AI-угрозы, проверять защитные фильтры и контроль вызовов инструментов.
Location: Amsterdam, Netherlands; Berlin, Germany; London, United Kingdom; Poland; Prague, Czech Republic; Zurich, Switzerland
About Nebius:
Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.
Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.
Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D.
Role Summary
Nebius Token Factory is building production-grade inference for open-source, customer, and internally optimized models. This role owns the path from model artifact to fast, reliable, cost-efficient endpoint. The work sits at the intersection of model internals, inference engines, serving architecture, benchmarking, and production deployment.
What You Will Do
Own a platform-level optimization pillar such as quantization, speculative decoding,
KV
-cache optimization, engine selection, or long-context serving.
Create reusable evaluation, benchmarking, and rollout frameworks across multiple model families.
Provide technical direction to MLEs, Applied Scientists, GPU kernel engineers, and infrastructure engineers on shared performance goals.
Optimize LLM and
VLM
endpoints for latency, throughput, memory efficiency, GPU utilization, quality, and cost per token.
Deploy, configure, benchmark, and extend inference engines such as vLLM, SGLang, TensorRT-LLM, Triton Inference Server,
NVIDIA
Dynamo, or similar systems.
Build and productionize model-compression workflows, including quantization, quantization-aware training, distillation, low-bit serving, and accuracy recovery.
Implement or integrate speculative decoding, draft-model approaches,
KV
-cache optimization, prefix caching, chunked prefill, continuous batching, and disaggregated prefill/decode serving.
Build reproducible benchmark harnesses for
TTFT
,
TPOT
, tokens per second per GPU, p95/p99 latency, GPU memory, reliability, and cost per token.
Partner with GPU kernel engineers and platform engineers to diagnose bottlenecks across model code, kernels, runtime, scheduler, gateway, and cluster layers.
Write clear design docs, performance reports, rollout plans, and customer-facing technical explanations.
Required Qualifications
Strong Python and PyTorch engineering skills.
Hands-on experience deploying or optimizing LLM,
VLM
, or high-throughput transformer inference systems.
Practical knowledge of at least one modern inference stack such as vLLM, SGLang, TensorRT-LLM, Triton Inference Server,
NVIDIA
Dynamo, Ray Serve, KServe, or equivalent internal systems.
Strong understanding of transformer inference bottlenecks, including
KV
cache, attention, memory bandwidth, batching, parallelism, and long-context serving.
Ability to reason quantitatively about latency, throughput, quality, utilization, and cost tradeoffs.
Strong communication skills and ability to collaborate with research, kernel, infrastructure, product, and customer teams.
Preferred Qualifications
Experience with quantization-aware training, post-training quantization,
FP8
,
INT8
,
INT4
,
NVFP4
,
MXFP4
,
AWQ
,
GPTQ
, SmoothQuant, or related techniques.
Experience with distillation, speculative decoding, EAGLE, Medusa, multi-token prediction, or other inference acceleration methods.
Experience with agentic workloads, including tool calling, structured outputs, streaming APIs, high concurrency, and multi-step orchestration.
CUDA
or Triton familiarity, even if the role is not primarily a kernel-engineering role.
Open-source contributions to vLLM, SGLang, TensorRT-LLM, FlashInfer, LMCache, PyTorch, Triton, Ray, KServe, or related projects.
Benefits & Perks:
Competitive compensation
Career growth and learning opportunities
Flexibility and ownership
Collaborative and innovative culture
Opportunity to work on impactful AI projects
International environment and talented teams
What's it like to work at Nebius:
Fast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AI
Equal Opportunity Statement:
Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.
Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire.
If you need accommodations during the application process, please let us know.
Location: Kyiv; Remote (Ukraine)
Workplace: Hybrid
About us:
Gismart is a value-driven mobile app developer with a strong presence in the Health & Wellness, Utilities, and Music app markets. We have achieved a significant milestone of over 1 billion downloads worldwide, taking a step toward our mission of cultivating the well-being of people worldwide. With headquarters in London, UK, Gismart is a dynamic global company with a reach extending across Europe and far beyond. Our determined team comprises over 400 individuals who bring diversity, creativity, innovation, and relentless drive to the company. Gismart unites professionals from diverse backgrounds in entertainment, music, and tech, allowing us to play to each other’s strengths and succeed as a team.
Our mission:
Become a stepping stone on our customers’ journeys of self-improvement.
Our values:
- Deliver what matters
- Respect and support others
- Initiate and own
- Voiceopenly
- Execute with quality
If you are passionate about mobile app development and want to join a company that’s reshaping the industry, Gismart is the place for you. We provide exciting career opportunities, a supportive workplace culture, and the chance to contribute to a team that is making a tangible impact. For more information on Gismart, visit gismart.com http://gismart.com.
About project:
Testora is a self-discovery app that helps users explore and analyze their personality, intelligence, relationships, and career strengths through engaging tests. The app offers personalized challenges, progress reports, and habit tracking, making Testora your go-to tool for self-awareness, stronger relationships, and personal growth.
Responsibilities
- Develop cross-platform applications based on user needs.
- Contribute product ideas, features, and improvements.
- Research technical challenges and select an architecture that meets product requirements.
- Troubleshoot and debug issues to ensure stable performance and a positive user experience.
- Optimize application performance and memory usage.
- Review code and provide feedback to maintain high code quality.
- Stay up to date with mobile development trends and technologies.
- Participate in Agile processes, including planning, stand-ups, and retrospectives.
Requirements
- 5+ years of Android development experience and 3+ years of Flutter/Dart development for iOS and Android.
- Strong knowledge of mobile architecture, Clean Architecture and scalability.
- Experience with REST APIs and GraphQL.
- Strong understanding of software design, testing, and maintenance.
- Advanced knowledge of Kotlin Coroutines, Jetpack Compose, and multithreading.
- Ability to work independently and collaboratively, prioritize tasks, and meet deadlines.
WOULD BE A PLUS
- Experience with Swift or Objective-C for native iOS modules in Flutter.
- Experience creating custom views and conducting UI testing.
- Familiarity with Git, GitHub, and Jira.
Employee Benefits:
- Remote-First Culture: Our team is diverse and extensive, just like our product portfolio. We provide a flexible working schedule and let you work anywhere in the world, either remotely or in one of our corporate hubs
- Сoworking Compensation: We provide 100% compensation for coworking spaces in Ukraine (except Kyiv, where we have a cozy and autonomous hub) and 50% compensation for coworking spaces worldwide to make sure that everyone has a comfortable and inspiring workspace
- Free Office Lunches: We want you to stay fueled and focused, so we provide delicious free lunches for everyone working from our hubs. It’s one less thing for you to worry about during a productive workday
- Public Holidays Policy: Gismart observes public holidays based on the Ukrainian or Polish holiday calendars. Employees working in other locations are entitled to 12 public holidays per year
- 100% Sick Leave Compensation
- Mental and Physical Health: To help you stay happy and healthy, Gismart will partially cover your medical insurance, sports activities, therapy costs
- Personal Equipment Policy: Of course, we’ll provide you with all the equipment you need or cover the maintenance cost for your own tools
- Personal Learning and Development: We love to see you learn and grow, so Gismart will cover 70% of your professional development courses. We’ll also pay for 100% of corporate English courses
- Time-Off Policy: Every employee gets 18 working days of paid vacation and 3 personal days per year, with an extra day added for each year at Gismart
- Corporate Events: We are remote-first, but we love meeting up in person. Whenever possible, we organize corporate events and team-building activities across all Gismart hubs
-Разработка и развитие backend-сервисов для AI/Agent-платформы на Python. -Проектирование и реализация асинхронных task-processing pipeline: постановка задач, очереди, воркеры, статусы, retries, idempotency.
Location: Athens
Workplace: Remote
About the company:
KIEFER is building Greece's integrated AI ecosystem. From renewable energy infrastructure and AI systems to robotics and enterprise applications, we connect the technologies that power Europe's intelligent future. Founded in 2014, KIEFER has delivered 600MW+ of energy projects and is now developing sovereign AI infrastructure, enterprise AI products and physical AI systems for Greece and Southeast Europe.
About the role
We are looking for an ML Engineer to improve the agent and long-context LLM capabilities behind Kiefer Tech’s AI products. You will work hands-on across post-training, data, evaluation, agent design, and inference, with the goal of making multi-step tasks more reliable in production.
What you will do
- Run post-training experiments using supervised fine-tuning, preference optimization, reinforcement learning, or other suitable methods.
- Improve how agents plan, use tools, manage execution, and recover from errors.
- Build benchmarks, verifiers, and diagnostic tools to measure agent performance and identify failures.
- Generate and curate training data, including agent trajectories and difficult cases from target workflows.
- Evaluate and improve long-context behavior, memory and retrieval interactions, and reliability over multi-step tasks.
- Work with ML, Product, and Engineering to improve inference and bring successful experiments into production with clear regression checks.
What you will need
- 3+ years of relevant ML or research engineering experience, with clear technical ownership and measurable results.
- Hands-on LLM post-training experience in at least one area: supervised fine-tuning, preference optimization, reinforcement learning, or a comparable method.
- Experience building agent systems involving tool use, multi-step execution, and error recovery.
- Strong skills in model and agent evaluation, failure analysis, and the creation or curation of training data.
- Strong Python, hands-on experience with PyTorch, JAX, TensorFlow, or a similar framework, and solid software engineering skills.
- Experience improving or deploying model-backed systems, with an understanding of LLM inference performance and cost.
Nice to have
- Reward modeling or verifier-based training.
- Long-context training, memory systems, retrieval, or context compression.
- Distributed training or high-performance LLM serving.
- Experience delivering agents for complex enterprise, coding, or research workflows.
What is there for you
- Compensation: Competitive package aligned with talent benchmarks.
- Impact: Hands-on work shaping AI capabilities for Kiefer Tech’s products and real-world applications.
- AI-native environment: Real challenges across model development, evaluation, and production AI systems.
- Culture: Engineering-first, high autonomy, low bureaucracy, and space to shape meaningful AI products.
Location: Remote - United States
Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit
www.redditinc.com
.
Location:
Reddit has a flexible first workforce. Don't live near our office? No worries: you can work remotely from anywhere in the US or Canada.
About the Team
Reddit's Ads ML Efficiency team is focused on making machine learning workloads faster, more scalable, and more cost-efficient, enabling our Ads ML teams to develop, launch, and scale increasingly sophisticated models.
This role sits at the intersection of ML workloads, execution systems, and engineering leverage. The engineer will partner closely with ranking teams, serving owners, and ML Platform to identify important bottlenecks, implement targeted improvements, and connect execution and systems improvements to measurable end-to-end outcomes.
What you’ll do
Own end-to-end performance optimization initiatives for high-impact production ML workloads, from bottleneck identification and implementation through validation and production rollout.
Profile and diagnose ML performance bottlenecks across model execution, frameworks, runtimes, memory, CPU/GPU utilization, and infrastructure using rigorous benchmarking and measurement.
Design and implement performance improvements involving inference execution, runtime behavior, batching, memory management, precision, compiler integration, custom operators, kernels, or other relevant techniques.
Improve ML training and serving efficiency and scalability, optimizing latency, throughput, hardware utilization, and cost while maintaining model quality and production reliability.
Support faster and safer model launches through performance benchmarking, load testing, regression detection, and launch-readiness improvements.
Partner with model engineers and platform teams to identify high-leverage opportunities, integrate optimizations safely, and validate measurable end-to-end impact.
Build reusable performance capabilities, including benchmarks, tooling, optimization patterns, and engineering guidance that accelerate future model development and deployment.
Contribute to technical direction and mentor engineers through hands-on collaboration, code reviews, performance debugging, and knowledge sharing.
What we’re looking for
Hands-on ML performance engineering experience: Demonstrated ability to diagnose and implement meaningful performance improvements in production or production-relevant ML workloads.
Deep expertise in at least one ML performance area, such as inference execution, ML runtimes, compiler integration, GPU/kernel optimization, memory systems, or training execution.
Strong profiling and benchmarking skills: Ability to identify bottlenecks systematically, establish reliable baselines, and validate measurable end-to-end improvements.
Strong software engineering fundamentals: Experience implementing, debugging, testing, and maintaining performance-sensitive systems, with proficiency in Python and relevant systems programming technologies.
ML systems understanding: Familiarity with production ML frameworks and the performance trade-offs across model execution, runtime, memory, hardware, and infrastructure.
Production engineering judgment: Ability to balance performance improvements with numerical correctness, model quality, reliability, maintainability, and safe rollout.
Good customer and platform instincts: can solve concrete bottlenecks while keeping maintainability, adoption, and future reuse in mind.
Strong communication: able to explain tradeoffs clearly to engineers and partner teams.
Nice-to-have
Experience optimizing large-scale inference or training workloads, particularly in recommendation systems, ranking, search, or retrieval.
Experience with PyTorch, including performance optimization using technologies such as Dynamo, Inductor, AOTI, torch.export, or custom operators.
Experience with inference runtimes, GPU execution, or performance technologies such as TensorRT, ONNX Runtime, CUDA, Triton, LLVM/MLIR, or equivalent systems.
Experience with hardware-aware optimization, including batching, memory management, operator fusion, mixed precision, quantization, or accelerator efficiency.
Experience with distributed-training performance, including GPU utilization, communication, data loading, memory efficiency, or training step-time optimization.
Experience building performance benchmarks, profiling tools, regression detection, launch-readiness capabilities, or cost observability toolings for ML workloads.
Experience working across ML modeling, serving, and platform infrastructure teams.
Specialized compiler internals or custom CUDA/Triton kernel development are valuable but not required.
We value demonstrated performance engineering depth, sound technical judgment, and measurable workload impact over familiarity with any particular tool or framework.
Benefits:
Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
Family Planning Support
Gender-Affirming Care
Mental Health & Coaching Benefits
Group Personal Pension Scheme with Employer match
Private Medical and Dental Scheme
Income Replacement Programs
Bike to Work scheme
Flexible Vacation & Paid Volunteer Time Off
Generous Paid Parental Leave
Pay Transparency:
This job posting may span more than one career level.
In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit
https://www.redditinc.com/careers/
.
To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below.
The base salary range for this position is:
$216,700
—
$303,400 USD
In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.
During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our
Candidate Privacy Policy for Potential Employees and Contractors
.
Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.
Location: USA (Remote)
Workplace: Remote
Mysten Labs’ mission is to advance the internet through step-function improvements in what technology makes possible. We build foundational infrastructure and products that give people, businesses, and developers new ways to interact, transact, and create value.
Our work spans on-chain finance and the emerging agent economy. Through Sui, Move, and our broader technology stack, we’re building the systems that make these experiences possible - from secure, scalable blockchain infrastructure to new ways for businesses and AI agents to interact.
ABOUT MYSTEN LABS
Through Sui and our financial products, we’re building infrastructure and experiences for trading, liquidity, and asset management. Alongside that work, we’re developing the infrastructure and products AI agents need to operate reliably, handle sensitive information, and interact under clear rules.
As agents take on more responsibility, they need more than intelligence. They need persistent context, trusted access to information, and clear boundaries around what they can do. Mysten brings together capabilities across storage, memory, privacy, and policy-controlled interactions to help make that future possible.
THE ROLE
We’re hiring a Product Lead to turn our emerging agentic technologies into products customers can understand, adopt, and buy.
Your role is to translate our product capabilities into useful experiences and commercially viable offerings—for example, a commerce-focused product that helps retailers manage agent-driven shopping, returns, or refunds.
Working closely with our CTO, Sales Lead, and engineering, you’ll identify customer problems, rapidly prototype solutions, and help bring the strongest opportunities to market. You’ll connect customer discovery, product definition, experience design, and commercialization, staying close to the work from the first concept through launch.
Joining this team means helping define a new product category, its customer experience, and the business around it. You’ll have the opportunity to shape how businesses participate in the agent economy and bring that vision to market.
WHAT YOU’LL DO
- Identify and prioritize customer problems our other agentic products are well positioned to solve.
- Lead customer discovery alongside our CTO, developing a clear understanding of buyer needs, user workflows, and adoption barriers.
- Rapidly create prototypes, interactive demonstrations, and product variants using AI-assisted design and coding tools.
- Test concepts with customers and use their feedback to refine the experience, scope, and value proposition.
- Define product requirements and work with engineering to turn validated prototypes into reliable, production-ready offerings.
- Shape packaging, pricing hypotheses, positioning, and GTM strategy in partnership with sales and the broader team.
- Design experiences that make agent capabilities, permissions, policies, and human oversight understandable to users.
- Balance customer-specific needs with opportunities to build reusable capabilities and repeatable products.
- Define success measures across customer value, adoption, conversion, and revenue, using results to guide iteration.
WHAT YOU’LL BRING
- 12+ years of Product Management, Product Design, or related experience
- A track record of taking new products from an ambiguous opportunity through customer validation, launch, and commercial adoption.
- Startup or similarly entrepreneurial experience, with direct ownership of building and shipping under uncertainty.
- Strong prototyping skills and hands-on experience using AI-assisted or agentic coding tools to build and iterate on functional experiences.
- Experience working directly with customers to define products, validate demand, and support pilots or sales conversations.
- Commercial judgment, including experience contributing to packaging, pricing, positioning, or GTM decisions.
- Strong UX instincts and the ability to make complex technology approachable without obscuring important controls or constraints.
- Enough technical fluency to collaborate with engineering on integrations, feasibility, and the path from prototype to production.
- A hands-on working style and the ability to influence across product, design, engineering, and sales.
NICE TO HAVE
- Experience with customer-facing AI, enterprise commerce, payments, trust and security, or workflow products.
- Experience with agent permissions, approval flows, auditability, or other mechanisms that help businesses control automated actions.
Employment is contingent upon the successful completion of a background check, which may include verification of employment history, education credentials, criminal history, and other relevant information.
Regarding the recent rash of technology job scams: Be aware that emails from genuine Mysten Labs group recruiters will always come from the @mystenlabs.com http://mystenlabs.com domain or related subdomains (e.g., mystenlabs.com/careers http://mystenlabs.com/careers). Remember: you can always verify positions on our job boards at www.mystenlabs.com/careers http://www.mystenlabs.com/careers.
To support an efficient and fair hiring process, we may use technology-assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers.
Our team is remote first and we are hiring across the world. Here at Mysten Labs, you’ll be joining a world-class team with tremendous growth potential as we bring the next billion users to web3. We raised a $300M Series B round from top Silicon Valley led venture funds like Jump Crypto, Andreessen Horowitz (a16z), Binance Labs, Redpoint, Lightspeed, Coinbase Ventures, Electric Capital, Standard Crypto, NFX, Slow Ventures, Scribble Ventures, Samsung Next, Lux Capital, among other investment firms and strategic partners. Come join us and build the future of web3!
Location: Hamburg
adjoe builds the technologies behind mobile apps growth and monetization. With our core product Playtime, we've become the global leader in rewarded advertising, an ad unit built on a simple premise: users earn real in-app rewards for engaging with new apps. The result is one of the most effective value exchanges in adtech, connecting advertisers and publishers with over 770 million users annually
Creating solutions that run on 13% of the world’s smartphones
The Mobile Integrations team builds the core technology that turns advertising from an interruption into a rewarded experience for 770 million users. We own the robust, lightweight, integration layer between our ad engine and the global mobile ecosystem, ensuring our technology operates with minimal overhead while reaching a massive portion of the smartphone market.
On the client side, our technology performs smoothly across 20 million daily SDK initializations. We build native Swift and Kotlin SDKs optimized for ms initialization and minimal binary overhead, with Unity, Flutter, and React Native wrappers that provide a unified API across the entire mobile ecosystem. Behind the scenes, a high-throughput Go and DynamoDB architecture handles the real-time state synchronization of millions of concurrent sessions. When your code runs on nearly one out of every seven smartphones on Earth, every millisecond of execution and every byte of memory counts.
What you Will Do:
- Own and prioritize the Mobile SDK product backlog, balancing customer needs, business priorities, technical requirements, and engineering capacity.
- Translate product and developer needs into clear requirements, user stories, acceptance criteria, and actionable priorities for the engineering team.
- Drive feature delivery from discovery and planning through development, testing, release, and post-launch evaluation.
- Work closely with Android, iOS, Backend, QA, and other stakeholders to manage dependencies, resolve blockers, and ensure smooth delivery.
- Gather and analyze feedback from customers, developers, and internal teams to identify integration pain points and opportunities to improve the SDK and developer experience.
- Support SDK releases and rollouts, including release planning, documentation, adoption tracking, and communication with relevant stakeholders.
- Use product data, SDK telemetry, and feedback to measure outcomes, identify opportunities, and continuously improve the Mobile SDK platform.
Who You Are:
- You bring 3+ years of hands-on experience as a Product Owner in a fast-paced, high-growth environment. (Bonus points if you have a background in ad-tech or Mobile/SDKs)
- You aren't expected to write code, but you are right at home discussing SDK architecture. You grasp the fundamentals and differences between iOS and Android, empowering you to have meaningful debates with the development team and properly weigh technical debt against business value.
- You have a proven track record of leveraging A/B testing and experimentation to drive product strategy. You know exactly how to define clear success metrics, analyze KPIs, and confidently pivot based on what the data tells you.
- You are a digital native who speaks the language of both business and engineering fluidly. You excel at closing the gap, aligning what the business envisions with what the technology can actually execute.
- You take deep ownership of your product. You are comfortable navigating ambiguity, working independently, and making the objective calls needed to balance incoming business requests with the long-term technical integrity of the platform.
- You possess concise, direct communication skills. You know how to align, motivate, and guide interdisciplinary teams, cultivating a thriving and collaborative environment even as project requirements evolve.
What you get:
- Invest in Your Future: Regular feedback and our development program support your growth, helping you expand your skill set and achieve your career goals.
- Easy Arrival to adjoe: From signing to settling in Hamburg, we’ve got you covered. Need a visa? No problem. Ready to build your new life and career at adjoe in Hamburg? We support every ambition—from learning German to a relocation bonus that helps you make Hamburg feel like home.
- Live Your Best Life, at Work and Beyond: We work in a hybrid setup with core office days on Monday, Tuesday, and Thursday, plus flexible working hours. Enjoy 30 vacation days, 3 weeks of remote work per year, and free access to an in-house gym with lots of different fitness classes and mental health support through our Employee Assistance Program (EAP).
- Thrive Where You Work: Enjoy the Alster lake view from our central office with top-notch equipment, fun open spaces, and a large variety of snacks and drinks.
- Join the Community! Participate in regular team and company events, including hackathons and social gatherings. We work together, and we celebrate together, too.
We welcome applications from people who will contribute to the diversity of our company.
Location: Budapest
Are you an experienced Software Engineer festinated about leadership? The Sportsbook Area within Product Development is now hiring! We have a world-class Sportsbook, developed in-house by our dedicated Sportsbook tech team. Our Sportsbook Platform is ours – from our Architecture to our Trading teams – we have an in-house platform which hosts our brands offering Sports betting for our customers. From the tools our traders use to the cutting edge features our customers use to bet on various sports – our teams are the backbone to making this happen!
The Wow
Much like a rollercoaster, life at Betsson Group is fast-paced, full of twists and turns, and always exciting. With more than
2,800
colleagues representing over 75 nationalities
across a global network of offices
- including
1,500
at our operational headquarters in Malta - every day brings new challenges and opportunities to grow. It may not be for the faint-hearted, but if you thrive on innovation, enjoy pushing boundaries and want to be part of a diverse, international team, then you’ll fit right in at Betsson.
The Team Lead will support the Engineering Manager in development, quality assurance and product managements whilst having direct reports.
A taster of what you will be involved with:
Working closely with members of the team to ensure successful completion of projects and overall support with all roll-out services;
Enabling continuous improvement by supporting when needed;
Being responsible for vacation planning of your direct reports;
Holding periodic one-to-one meetings to ensure that every individual can perform at his/her best and supporting the development via close work with HR;
Motivating the team into improving its performance and ensure that team members are always supported;
Leading team efforts (engineers, developers, designers and other team members) towards successful project delivery for our customers;
Collaborating with various stakeholders, maintaining a focus on business goals.
What we are looking for
Development background in building highly scalable, containerized services and applications
Strong preference for experience in Angular. Good understanding of modern web technology(Javascript,TypeScript, etc)
Familiarity with .NET Core, C#, messaging systems (Rabbit MQ) and in-memory databases (Redis, MS SQL)
Deep understanding and interest in lean and agile principles for product development
Demonstrated ability to build effective teams, motivate, direct and coach staff
Strong people management & leadership skills
What we offer
Fitness-wellness allowance 🧗♂️
Company mobile phone for private use with 100 GB 📱
Annual HUF devaluation compensation 💡
Hybrid model: 3 days in the office 🏢 & 2 days from home 🏠
Private Health Insurance 🩺
Career development 📈
Technical and soft-skill training opportunities 🎓
Breakfast, fruits & lunch 🍎
Team building events 🥳
Challenge accepted?
By submitting your application, you understand that your personal data will be processed as set out in our
Privacy Policy
Location: Athens
Are you an experienced Software Engineer festinated about leadership? The Sportsbook Area within Product Development is now hiring! We have a world-class Sportsbook, developed in-house by our dedicated Sportsbook tech team. Our Sportsbook Platform is ours – from our Architecture to our Trading teams – we have an in-house platform which hosts our brands offering Sports betting for our customers. From the tools our traders use to the cutting edge features our customers use to bet on various sports – our teams are the backbone to making this happen!
The Wow
Much like a rollercoaster, life at Betsson Group is fast-paced, full of twists and turns, and always exciting. With more than
2,800
colleagues representing over 75 nationalities
across a global network of offices
- including
1,500
at our operational headquarters in Malta - every day brings new challenges and opportunities to grow. It may not be for the faint-hearted, but if you thrive on innovation, enjoy pushing boundaries and want to be part of a diverse, international team, then you’ll fit right in at Betsson.
The Team Lead will support the Engineering Manager in development, quality assurance and product managements whilst having direct reports.
A taster of what you will be involved with:
Working closely with members of the team to ensure successful completion of projects and overall support with all roll-out services;
Enabling continuous improvement by supporting when needed;
Being responsible for vacation planning of your direct reports;
Holding periodic one-to-one meetings to ensure that every individual can perform at his/her best and supporting the development via close work with HR;
Motivating the team into improving its performance and ensure that team members are always supported;
Leading team efforts (engineers, developers, designers and other team members) towards successful project delivery for our customers;
Collaborating with various stakeholders, maintaining a focus on business goals.
What we are looking for
Development background in building highly scalable, containerized services and applications
Good understanding modern web technology (JavaScript, Typescript, React, Angular), familiarity with .NET Core, C#, messaging systems (Rabbit MQ) and in-memory databases (Redis, MS SQL)
Strong preference for experience in Angular. Good understanding of modern web technology(Javascript,TypeScript, etc)
Familiarity with .NET Core, C#, messaging systems (Rabbit MQ) and in-memory databases (Redis, MS SQL)
Deep understanding and interest in lean and agile principles for product development
Demonstrated ability to build effective teams, motivate, direct and coach staff
Strong people management & leadership skills
What we offer
Monthly Allowance for Lunch
Private & Life Plan Insurance for you and your family
Team Building Budget
Annual Wellness Allowance
Corporate Travel Insurance
Events and initiatives both Local (Quarterly Meetings) and Global
Professional Development Programs & Internal Career Opportunities
Milestone Birthday
Challenge accepted?
By submitting your application, you understand that your personal data will be processed as set out in our
Privacy Policy
Location: Malta
Are you an experienced Software Engineer festinated about leadership? The Sportsbook Area within Product Development is now hiring! We have a world-class Sportsbook, developed in-house by our dedicated Sportsbook tech team. Our Sportsbook Platform is ours – from our Architecture to our Trading teams – we have an in-house platform which hosts our brands offering Sports betting for our customers. From the tools our traders use to the cutting edge features our customers use to bet on various sports – our teams are the backbone to making this happen!
The Wow
Much like a rollercoaster, life at Betsson Group is fast-paced, full of twists and turns, and always exciting. With more than
2,800
colleagues representing over 75 nationalities
across a global network of offices
- including
1,500
at our operational headquarters in Malta - every day brings new challenges and opportunities to grow. It may not be for the faint-hearted, but if you thrive on innovation, enjoy pushing boundaries and want to be part of a diverse, international team, then you’ll fit right in at Betsson.
The Team Lead will support the Engineering Manager in development, quality assurance and product managements whilst having direct reports.
A taster of what you will be involved with:
Working closely with members of the team to ensure successful completion of projects and overall support with all roll-out services;
Enabling continuous improvement by supporting when needed;
Being responsible for vacation planning of your direct reports;
Holding periodic one-to-one meetings to ensure that every individual can perform at his/her best and supporting the development via close work with HR;
Motivating the team into improving its performance and ensure that team members are always supported;
Leading team efforts (engineers, developers, designers and other team members) towards successful project delivery for our customers;
Collaborating with various stakeholders, maintaining a focus on business goals.
What we are looking for
Development background in building highly scalable, containerized services and applications
Strong preference for experience in Angular. Good understanding of modern web technology(Javascript,TypeScript, etc)
Familiarity with .NET Core, C#, messaging systems (Rabbit MQ) and in-memory databases (Redis, MS SQL)
Deep understanding and interest in lean and agile principles for product development
Demonstrated ability to build effective teams, motivate, direct and coach staff
Strong people management & leadership skills
What we offer
Much like riding a rollercoaster, sometimes life at Betsson can be lightning fast with twists and turns but always FUN! Then again, what else would you expect from a business 75% millennial and 1700 strong, spread across 7 offices with 900 based out of our Malta HQ alone! We recognise it may not be for the faint-hearted, but if you’re a go-getter, initiator and adrenaline junkie, always striving to push the boundaries and challenge yourself, then you’ll fit right in.
Challenge accepted?
By submitting your application, you understand that your personal data will be processed as set out in our
Privacy Policy
Location: Serbia; Spain
Social Discovery Group
(SDG) is a group of social discovery companies. SDG solves the problems of loneliness, isolation, and disconnection - transforming virtual intimacy into the new normal. SDG’s products redefine the way people interact and connect with one another.
Our portfolio includes social entertainment platforms designed to connect people online across different cultures and regions of the world.
We bring together a team of like-minded people and IT professionals who specialize in creating and developing globally impactful social discovery products. Our international team of digital nomads works remotely from all over the world.
We’re proud to be a two-time “Great Place to Work” winner (USA & Japan, 2024–2025) and a Top-5 Company for Work-From-Anywhere Jobs (FlexJobs, 2025).
We are looking for
Machine Learning Engineer.
Your main tasks will be:
Set the ML direction: choose which strategic bets to make and tie each one to clear business needs.
Drive LLM post-training and model adaptation end to end, from dataset construction to fine-tuning and preference optimization.
Design and build agent harnesses and tool-using LLM systems.
Shape multi-agent development workflows that make the team faster and more effective.
Build evaluation frameworks and LLM-as-a-judge systems that reliably predict real-world performance.
Improve dialogue quality across memory, emotional intelligence, persona consistency, safety and anti-loop behavior.
Ship production systems that directly shape user experience, retention and monetization.
We expect from you:
Python expert level: clean code, typing, async, multiprocessing, profiling, debugging, notebooks + production code.Trainsformers.
Training and fine-tuning LLMs.
SFT, LoRA/QLoRA, PEFT.
Preference optimization: DPO / ORPO / SimPO / CPO / GRPO or willingness to quickly go deep.
Building datasets for LLM training: cleaning, filtering, deduplication, preference pairs, synthetic data, hard negative mining.
LLM evaluation: offline evals, pairwise evals, LLM judges, human annotation.
Agent harness design: tool calling, function calling, structured outputs, retries, routing, state management, memory/context, guardrails.
Production LLM integration: APIs, streaming, batching, fallbacks, cost/latency trade-offs.
Observability for agents: traces, tool-call logs, transcript analysis, failure clustering.
Strong understanding of transformer architecture and modern LLM behavior.
Accuracy with dtype/device/batching: fp32/fp16/bf16, quantization, CUDA memory, avoiding dtype mismatch bugs.
Git, Docker, Linux, basic MLOps.
Fluent Russian, ready to work in CET (±2) hours.
Nice to have:
experience beyond text (computer vision, image generation, multimodal), long-running conversations and character consistency, vLLM / TGI / SGLang, DeepSpeed / FSDP / Accelerate, quantization, safety classifiers.
What do we offer:
REMOTE OPPORTUNITY
to work full-time;
The
initial pay level
or
pay range
for this role will be shared with candidates during the recruitment process and before the commencement of employment;
Vacation
28 calendar days per year;
7 wellness days per year
(time off) that can be used to deal with household issues, to lie down and recover without taking sick leave;
Bonuses up to $5000
for recommending successful applicants for positions in the company;
50%
payment for professional training, international conferences, and meetings;
Corporate discount for
English lessons;
Health benefits.
According to the paychecks, if you are not eligible for corporate medical insurance, the company will compensate you with up to $ 1,000 gross per year per employee. This can be spent on self-purchase of health insurance or on doctor’s fees for yourself and close relatives (spouse, children);
Workplace organization.
The company provides all employees with an equipped workplace and all the necessary equipment (table, armchair, wifi, etc.) in our offices or co-working locations. In the other locations, the company provides reimbursement of workplace costs up to $ 1000 gross once every 3 years, according to the paychecks. This money can be spent on the rent of the co-working room, on equipping the working place at home (desk, chair, Internet, etc.) during those 3 years;
Internal gamified gratitude system:
receive bonuses from colleagues and exchange them for our merchandise, team building activities, massage certificates, etc.
Sounds good? Join us now!
Location: Global, EU
We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.
The future of Web3 starts with you: join us as a !
Requirements
We're looking for a Senio/Staff-level engineer with an open mind and a builder's instinct - someone who goes beyond executing tasks and is ready to own the High-Performance practice end-to-end: establish engineering processes, drive R&D, evaluate and champion new technologies, and lead their adoption in production.
The ideal candidate can bridge the gap between business requirements for low latency and high throughput and the realities of existing infrastructure - translating "we need to be faster" into an actionable technical roadmap. You bring a fresh perspective, know how to organize the work, and are equally comfortable optimizing a hardware parameter and presenting a strategy to stakeholders.
We expect 5+ years of hands-on experience as a DevOps/SRE/Systems Engineer in performance-critical environments - and the maturity to grow yourself and grow a team around you.
Linux:
Advanced administration and OS-level tuning — real-time OS configurations, cgroups, CPU isolation, memory management, and low-level network stack configuration.
Hardware Internals:
Deep understanding of CPU power and performance states (C/P-states), Hyper-Threading / SMT trade-offs, TX/RX ring configuration, and the full data path from NIC through PCIe to memory and CPU. Ability to reason about and tune each stage of that path under production load.
Networking & TCP Internals:
Deep knowledge of TCP/IP — congestion control, ACK behavior, buffer tuning, and protocol-level latency sources. Strong Linux networking fundamentals: low-latency NIC configuration, bypass networking technologies (DPDK, RDMA), and market connectivity (multicast feeds, co-location networks, VPNs).
Performance Engineering:
Practical experience profiling latency-sensitive systems; familiarity with tools such as perf, flamegraph, strace, tcpdump, eBPF, and hardware performance counters.
Containerization:
Deep knowledge of Docker and Kubernetes, including low-overhead deployment patterns and performance trade-offs of containerized workloads.
IaC:
Proven track record with Ansible, Terraform, and Helm in production environments.
Monitoring:
Hands-on experience with the Prometheus / Grafana stack; ability to build latency-aware dashboards and alerting (P99, jitter, throughput KPIs).
Scripting:
Solid scripting in Bash and Python; Golang is a strong plus given its role in systems tooling.
CI/CD & Secret Management:
Strong grasp of CI/CD pipelines with experience integrating performance validation stages; familiarity with Vault for secrets management.
Security:
Understanding of DevSecOps principles and Kubernetes security policies.
Key Performance Metrics You'll Work With
Latency Distribution
- P99 / P99.9 across the tick-to-trade path, using hardware-level timestamps (NIC/PTP).
Jitter
- variance between min/max latency, measured over large sample sets in live market conditions.
Throughput
- messages per second (orders + cancels) under exchange burst scenarios.
System Reliability
- сontinuous monitoring of uptime
Extra Credit / Big Pluses
Hands-on experience with kernel-level optimization: syscall reduction, network stack bypass (DPDK, RDMA, Solarflare OpenOnload).
Background in HFT, algorithmic trading, or other ultra-low-latency production environments.
Experience with hardware timestamping, PTP/IEEE 1588, and precision time synchronization.
Familiarity with colocation operations and exchange connectivity (cross-connects, proximity hosting).
Proven SRE track record with formal SLO/error budget frameworks in latency-sensitive contexts.
DevSecOps: vulnerability scanning, Zero Trust, RBAC, and secure delivery pipelines.
Understanding of business processes in FinTech, crypto, or electronic trading.
Responsibilities
Low-Latency Infrastructure Ownership:
Design, deploy, and continuously optimize infrastructure for latency-sensitive trading systems — market data handlers, order/deal gateways, and risk check engines. Own the full stack from bare metal to application delivery. Define and maintain a reference architecture for low-latency connectivity when onboarding new trading venues, including reproducible configuration baselines, validation procedures, and performance acceptance criteria — so every new venue goes live on a proven, optimized stack.
Cloud & Hybrid Network Connectivity:
Design, implement, and maintain complex low-latency network solutions for cloud provider interconnects - including cross-connects and Direct Connect / ExpressRoute links between cloud regions, hybrid on-premise/cloud topologies, and high-throughput inter-server fabrics. Ensure both latency minimization and fault tolerance at every layer: physical redundancy, failover routing, and path diversity across providers and regions.
Hardware & OS Stack Tuning:
Go deep on the full hardware and OS stack - CPU pinning, C/P-states, HT/SMT configuration, NUMA topology, IRQ affinity, TX/RX ring sizing, NIC offloading, and network stack bypass (DPDK/RDMA where applicable). Understand the complete data path from NIC through PCIe to memory and CPU - and optimize every hop.
Infrastructure as Code (IaC):
Automate provisioning and configuration of high-performance environments using Ansible, Terraform, and Helm - with performance reproducibility as a first-class requirement.
Latency Profiling & Benchmarking:
Systematically profile and debug latency hotspots across the full execution path. Establish and maintain SLA/SLO targets; track P99/P99.9 distributions, jitter, and throughput - not just averages.
CI/CD for Performance:
Build and maintain CI/CD pipelines that include automated latency regression testing, so performance degradations are caught before they hit production.
Monitoring & Observability:
Design and operate comprehensive latency monitoring and alerting systems (Prometheus, VictoriaMetrics, Grafana) - including hardware timestamping (NIC/PTP) and fine-grained performance telemetry.
Colocation & Network Placement:
Research, evaluate, and manage optimal server placements - colocations, cross-connects, proximity hosting. Work closely with network and infrastructure teams to minimize physical and logical distance to exchanges.
High Availability & DRP:
Design systems that maintain stability and reliability under peak load while continuously pushing latency lower - zero regressions, always.
Cross-Team Collaboration:
Work alongside algo developers, quant teams, and network engineers to ensure trading strategies execute with minimal infrastructure overhead.
Working terms
Immerse yourself in Crypto & Web3:
Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
Gain unique experience and be part of global transformations.
Drive Innovations:
Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
Collaborate with top experts worldwide and grow alongside the best.
Work-Life Balance & Well-being:
Modern equipment.
Comfortable working conditions, and an inspiring environment to help you thrive.
24 calendar days of paid leave.
Additional days off for national holidays.
With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
Let’s Build the Future Together!
WhiteBIT offers all candidates an equal opportunity to join the team. All hiring decisions are made without regard to race, national origin, gender identity or sexual orientation, age, religion, disability, medical condition, marital status, familial status, veteran status, or any other legally protected characteristic of an individual.
Your privacy matters to us. You can learn more about how we handle your personal data with regard to your application in our
Candidate Privacy Notice
.
Location: Global, EU
We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.
The future of Web3 starts with you: join us as a Senior DevOps!
Requirements
We're looking for candidates with 5+ years of hands-on experience as a DevOps / SRE and deep expertise in the following technologies:
Linux:
Advanced administration and OS-level tuning — real-time kernels, process scheduling, memory management, cgroups, CPU isolation, and I/O optimization.
Cloud platforms:
Understanding of and experience in building complex systems focused on high availability (HA), low latency and high-performance computing (HPC)
Networking:
Deep understanding of TCP/IP, UDP, multicast, Ethernet, VLANs, and PTP at the wire level. Experience with low-latency network configurations and familiarity with kernel bypass technologies (DPDK, RDMA) is a strong plus.
Containerization:
Deep-dive knowledge of Docker and Kubernetes, including performance trade-offs of containerized workloads and low-overhead deployment patterns.
IaC:
Proven experience with Ansible, Terraform, and Helm in production environments.
Hardware Performance:
Working knowledge of how CPUs, NIC queues, memory, and storage behave under pressure. Hands-on experience with hardware tuning (BIOS configs, CPU isolation strategies, NIC queue management).
Monitoring:
Practical experience with the Prometheus / Grafana stack; ability to build latency-aware dashboards and fire meaningful alerts rather than noise.
Scripting:
Proven track record writing production scripts in Bash and Python. Golang is a significant plus.
CI/CD:
Strong grasp of core CI/CD tools and experience with secret management using Vault.
Security: Understanding of DevSecOps principles and hands-on experience configuring security policies in Kubernetes (Zero Trust, RBAC, secure code delivery).
Databases:
Solid working knowledge of SQL and/or NoSQL databases under operational conditions.
On-Call & Incident Response:
High sense of ownership for production systems — willing to participate in on-call rotations and available to respond to critical incidents outside business hours when the situation demands.
Extra Credit / Big Pluses
Linux: Deep-dive into kernel-level optimization — from syscalls and network card tuning to DPDK or FPGA-based networking.
Proven experience operating High Availability / Ultra-Low Latency solutions in live trading environments.
Experience with hybrid infrastructures (on-premise + cloud) — colocations, cross-connects, and proximity hosting.
Background in building and operating Big Data and Data Analytics platforms.
Understanding of business processes in the FinTech / Banking / Crypto / HFT sector.
Proven track record as an SRE with formal SLO / error budget frameworks.
DevSecOps: Vulnerability detection, enforcing security best practices, and experience with scanning tools (Trivy or Snyk).
Blockchain / crypto-native background is a bonus.
Responsibilities
Hybrid Infrastructure (Baremetal and Clouds):
Administer Linux servers (Ubuntu, CentOS, RHEL), drive incident resolution, and take end-to-end ownership of system reliability.
Low-Latency Systems Operations:
Proactively monitor, troubleshoot, and tune latency-sensitive trading systems and exchange connections across multiple asset classes. You treat P99 latency as a first-class metric.
OS & Hardware Tuning:
Go deep on the Linux stack — CPU pinning, NUMA topology, IRQ affinity, kernel parameter tuning, NIC offloading, and BIOS-level configurations. If it affects the tick-to-trade path, you own it.
Infrastructure as Code (IaC):
Automate deployment and configuration using Ansible, Terraform, and Helm with performance reproducibility as a hard requirement.
CI/CD:
Build and maintain rock-solid CI/CD pipelines (GitLab CI, Jenkins, ArgoCD) including automated performance regression checks.
Monitoring & Observability:
Design and operate comprehensive monitoring and logging stacks (Prometheus, VictoriaMetrics, Grafana, ELK). Build latency-aware dashboards and alerting — P99/P99.9, jitter, throughput, and error rates.
High Availability & DRP:
Design and implement architectures adhering to HA, scalability, and Disaster Recovery principles — zero regressions while continuously reducing latency.
Cross-Team Collaboration:
Partner with quant, trading, and network engineering teams to squeeze every drop of performance from the full stack — from hardware up to application logic.
Working terms
Immerse yourself in Crypto & Web3:
Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
Gain unique experience and be part of global transformations.
Drive Innovations:
Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
Collaborate with top experts worldwide and grow alongside the best.
Work-Life Balance & Well-being:
Modern equipment.
Comfortable working conditions, and an inspiring environment to help you thrive.
24 calendar days of paid leave.
Additional days off for national holidays.
With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
Let’s Build the Future Together!
WhiteBIT offers all candidates an equal opportunity to join the team. All hiring decisions are made without regard to race, national origin, gender identity or sexual orientation, age, religion, disability, medical condition, marital status, familial status, veteran status, or any other legally protected characteristic of an individual.
Your privacy matters to us. You can learn more about how we handle your personal data with regard to your application in our
Candidate Privacy Notice
.
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