Jobs

We’re looking for a mid–senior DevOps Engineer to join a small, hands-on team that owns the infrastructure.

We run a hybrid environment: Azure plus bare metal (Hetzner and on‑prem server rooms), Talos Kubernetes, and a modern observability and GitOps stack.

You will:

• Run and evolve our Kubernetes platforms (Talos on bare metal, AKS on Azure).

• Own Infrastructure as Code and GitOps-driven delivery.

• Improve reliability, observability, security, and cost efficiency of production systems.

• Work in a fully remote, global, highly asynchronous team with a lot of autonomy.

You don’t need every single item, but you should recognize yourself in most of these:

• 4+ years in DevOps / SRE / Infrastructure roles with production ownership.

• Strong hands‑on experience with Kubernetes (self‑hosted and/or AKS).

• Practical experience with Terraform and Ansible.

• Experience building and running CI/CD with GitLab CI and/or Azure DevOps.

• Strong Linux fundamentals, troubleshooting, and scripting in Bash and/or Python.

• Good understanding of networking (TCP/IP, DNS, VPNs, load balancers, firewalls).

• Experience working with Azure (subscriptions, basic networking, identity, security concepts).

• Exposure to Prometheus / Grafana / Zabbix or similar monitoring tools.

• Excellent communication skills and very strong written and spoken English.

• Comfortable working in a fully remote, asynchronous, global team with high autonomy.

Nice to have

• Experience running globally distributed, customer‑facing SaaS or energy/IoT systems.

• Production use of OpenTelemetry (OTEL) and modern observability stacks.

• Hands‑on with Talos Kubernetes and hybrid Azure + bare‑metal setups.

• GitOps at scale with Argo CD and self‑managed GitLab (SCM, runners, registry).

• Operating ClickHouse at scale (backup/restore, performance, retention).

• Keycloak / OIDC / SAML, ELK/Wazuh, SAST/DAST, or other security tooling.

• Background in bare‑metal operations (servers, storage, virtualization, networking).

We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.

Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.

Responsibilities

- Develop and execute automated UI & API test suites.
- Lead regression testing strategy and quality governance.
- Validate UI/UX behavior and accessibility.
- Collaborate with engineering teams on defect resolution.
- Maintain test documentation and test metrics.
- Support UAT, release readiness, and quality gates.
- Test cloud-native deployments and integrations.
Skills
- Strong automation testing experience (Playwright/WebDriver). - Understanding of regression and integration testing design.
- Knowledge of accessibility and UI validation.
- Familiarity with API testing tools (Postman, REST Assured).
- CI/CD test execution knowledge.
- Basic debugging & log analysis skills.
- Experience creating reusable test assets.

Please read before applying:

The client is building a product in the bank/investment/brokerage systems niche, and their investors have strict security and compliance requirements, where every person will go through a background check.

What does this mean?

Before making an offer, they will check whether you have violated any EU laws.

Why Poland?

The client has teams in the USA, Ireland, and Poland.

For background check — you must be a taxpayer in Poland for 2+ years.

We are hiring a Full Stack & Python AI Engineer for an international product company operating globally in the consumer and manufacturing domain. The company is building internal digital platforms focused on automation, data-driven decision-making, and AI-powered workflows used across multiple business units.

The role is part of a long-term initiative to develop and evolve core internal systems that combine modern web applications, real-time communication, and LLM-based features.

You will work across the full stack, owning features end to end, from Angular frontend components to Python backend services and AI integrations.

Responsibilities

• Develop full stack features using Angular 18+ and Python

• Build backend services with Quart (async Flask-style framework)

• Design and maintain REST APIs and WebSocket-based real-time functionality

• Implement AI-driven features using LLMs, embeddings, and RAG pipelines

• Work with vector databases (Qdrant or similar) and MongoDB

• Use Docker for development and deployment workflows

• Improve existing systems, focusing on performance, scalability, and architecture

• Collaborate with engineers and stakeholders on system design and long-term evolution

Requirements

• 7+ years of overall experience as a full stack or backend-focused engineer

• Strong hands-on experience with Python, including Flask or Quart

• Production experience with Angular (project uses Angular 18+)

• Experience building Web APIs and real-time systems

• Hands-on experience with LLMs, embeddings, and text-based AI use cases

• Experience working with MongoDB and SQL databases

• Practical experience with Docker

• Ability to work independently and take ownership of complex systems

• Professional English level

Nice to Have

• Experience with Azure

• Familiarity with LangChain or LangGraph

• Background in enterprise or manufacturing-related systems

• Experience with Django

We are hiring a Senior DPDK / Systems Engineer for a Canadian product startup building a carrier grade network intelligence platform.

The company develops a high performance deep packet inspection and traffic classification engine used in security, intelligence, and telecom environments. The core system processes network traffic at extremely high throughput with strict latency requirements and is designed for continuous operation in carrier grade infrastructures.

The product is a low level, performance critical system built around DPDK and modern systems programming practices. It operates at line rate speeds, processes tens of millions of concurrent flows, and performs deep L7 inspection, traffic classification, and shaping in real time.

In this role, you will work close to the hardware and network stack, owning critical parts of the packet processing pipeline and performance optimization, in collaboration with senior system architects and infrastructure engineers.

Responsibilities

• Design and implement high performance DPDK RX/TX pipelines with zero copy forwarding

• Build per core, lock free flow tables supporting tens of millions of concurrent flows

• Implement L7 protocol parsing including HTTP, TLS SNI, DNS, QUIC, and custom protocols

• Develop application and traffic classification using signature based and ML assisted approaches

• Implement traffic shaping and QoS mechanisms such as hierarchical token bucket

• Integrate high performance pattern matching using Hyperscan

• Perform deep performance optimization using SIMD, cache tuning, and NUMA aware design

• Profile and debug performance bottlenecks using tools such as perf, VTune, or similar

• Work closely with hardware, infrastructure, and backend teams to ensure end to end system efficiency

Requirements

• 5+ years of hands on experience with DPDK in production systems, not research or prototypes

• Strong systems programming background in C++ or Rust, with willingness to work in Rust

• Deep understanding of poll mode drivers, mbufs, lockless data structures, and NUMA architectures

• Solid knowledge of TCP/IP stack internals and packet level protocol parsing

• Proven experience building and optimizing low latency, high throughput network systems

• Strong debugging and performance analysis skills

• Ability to work independently on complex, low level technical problems

• English level sufficient for technical discussions in an international engineering team

Nice to have

• Experience working at networking vendors or telecom equipment companies

• Background in carrier grade DPI systems

• Hands on experience with traffic shaping or QoS implementations

• Experience with ML inference pipelines such as ONNX Runtime

• Familiarity with eBPF, XDP, or kernel bypass techniques

• Experience with hardware offload technologies such as Flow Director or SR IO V

This is a long term opportunity to work on a technically extreme system at the core of a growing Canadian startup, solving hard performance problems at scale and building software that operates at the limits of modern networking hardware.

Affiliate Manager (iGaming) – Join RoyalFlush Affiliates!

We are a rapidly growing casino affiliate network, working with top casino brands worldwide. We are looking for an experienced Affiliate Manager with a strong portfolio to join our team and drive high-quality traffic to our partners.

https://royalflushaffiliates.com
 

Responsibilities:

Manage, and build relationships with affiliates.
Develop and execute strategies to maximize affiliate performance.
Negotiate deals and commissions to ensure optimal profitability.
Analyze campaign performance and optimize traffic sources.
Stay up to date with industry trends to identify new opportunities.
 

Requirements:

✅ English B2+

✅ Great written and verbal communication skills.

✅ Proven experience as an Affiliate Manager in the iGaming industry.
✅ Strong portfolio of successful affiliate partnerships and networks.
✅ Knowledge of affiliate marketing platforms, analytics, and tracking tools.
✅ Excellent negotiation and relationship-building skills.
✅ Ability to analyze data and optimize traffic sources.
 

What We Offer:

Competitive fixed salary + high-performance bonuses.
Work with exclusive casino deals and high-payout programs.
Flexible schedule & remote work options.
Growth opportunities in a leading affiliate network.

Ready to take your affiliate career to the next level? Apply now!

Remote work.

Online interview in English!

About the Role

Royal Flush Affiliates is a fast-growing iGaming and casino network connecting high-quality traffic sources with top-performing casino brands worldwide.
We are seeking an experienced PPC Media Buyer with a strong background in the iGaming and online casino industry. The ideal candidate will be responsible for creating, managing, and optimizing paid advertising campaigns across multiple platforms to generate high-quality traffic and maximize ROI.

Key Responsibilities

• Plan, launch, and optimize PPC campaigns across Google Ads, Meta and other performance channels relevant to casino and gaming verticals.
• Manage budgets, bids, and daily campaign pacing to achieve KPIs such as CPA, ROI, and FTDs.
• Analyze campaign performance, identify trends, and provide actionable insights for continuous improvement.
• Conduct A/B testing for creatives, ad copies, and landing pages to improve conversion rates.
• Research competitors and market trends within the iGaming niche.
• Collaborate with design and content teams to develop high-performing ad materials.
• Work with affiliate and CRM teams to ensure campaign alignment with user acquisition goals.
• Maintain compliance with advertising regulations and platform policies for gambling content.

Requirements

• Proven experience (1+ years) as a PPC / Media Buyer in the iGaming, casino industry.
• Deep understanding of performance marketing metrics (CTR, CPA, ROAS, LTV, FTD, etc.).
• Hands-on experience with Google Ads, Meta Ads Manager, and other DSPs.
• Strong analytical skills with proficiency in Google Analytics, Voluum, or similar tracking tools.
• Ability to manage multiple campaigns simultaneously across geos and platforms.
• Knowledge of compliance and responsible gambling marketing rules.
• Excellent English communication skills (written and spoken) B1+.
• Self-motivated, proactive, and result-driven personality.
  
  We Offer
• Competitive base salary + performance bonuses.
• Flexible working hours and remote work environment.
• Access to premium traffic tools, trackers, and analytics software.
• Growth opportunities within a high-performing team.
• Freedom to test, learn, and scale new ideas.

RoyalFlushAffs is a fast-growing performance marketing network connecting high-quality traffic sources with leading Forex and Crypto brands worldwide.

We’re expanding our media buying team and looking for a skilled Crypto Media Buyer who knows how to turn ad spend into measurable, scalable results.

🔹 Responsibilities

• Launch, manage, and scale paid campaigns across Facebook, Google, TikTok, Native, UAC, and other platforms
• Optimize funnels to improve lead quality, conversion rates, and ROI
• Manage daily budgets and meet performance KPIs
• Test and optimize creatives, audiences, angles, and landing pages
• Analyze campaign data and adjust strategies to maximize profitability
• Collaborate with the creative team to build high-performing ad assets
• Identify new GEOs, traffic sources, and scaling opportunities
• Ensure campaigns follow platform policies and compliance standards
   

🔹 Requirements

• Proven experience in Forex and/or Crypto media buying (mandatory)
• Strong understanding of paid traffic mechanics and performance optimization
• Hands-on experience with Facebook Ads, Google Ads, TikTok, Native, or Push
• Ability to manage budgets responsibly and scale winning campaigns
• Data-driven mindset with strong analytical skills
• Creative thinking combined with a performance-focused approach
   

🔹 What We Offer

• Competitive base salary + performance-based bonuses
• High budgets and freedom to test and scale
• Access to exclusive Forex & Crypto offers with strong CRs
• Fully remote work with a flexible schedule
• Long-term cooperation and growth opportunities

On behalf of our Client – a UK-based technology company specializing in transport retail and digital ticketing platforms — Mobilunity is looking for a Senior DevOps (AWS) Engineer (EU based only).

Our client partners with leading transportation operators to deliver innovative digital ticketing systems, scalable SaaS platforms, and customer-facing applications. Their solutions enhance passenger experience while enabling modern retail capabilities across rail and wider transport networks.

Mobilunity is seeking a Senior DevOps(AWS) Engineer to support our client’s cloud-native infrastructure and platform reliability initiatives. You will design, implement, and maintain highly scalable AWS environments, build infrastructure-as-code platforms, and develop automation tooling that enables secure, resilient, and efficient engineering operations.

Responsibilities:

• Design and manage AWS production-grade cloud environments
• Implement scalable containerized workloads using ECS and Fargate
• Build and maintain Terraform-based infrastructure (module-driven architecture)
• Develop automation tooling using Python (boto3) and Bash scripting
• Design secure networking architectures including VPCs, subnets, routing, and load balancing
• Implement CI/CD pipelines using GitHub Actions and Git-based workflows
• Ensure monitoring, logging, and security across infrastructure (CloudWatch, GuardDuty, WAF)
• Support database operations including RDS (Multi-AZ), DynamoDB, and DMS migrations
• Implement disaster recovery and resilience strategies
• Collaborate closely with engineering teams to improve deployment reliability and operational efficiency

Must have skills:

• VPC, subnets, NAT gateways, and route tables
• ECS and Fargate architecture and scaling patterns
• Application Load Balancer (ALB) and CloudFront
• RDS (Multi-AZ deployments, backups, performance tuning)
• DynamoDB
• IAM (advanced policy design)
• AWS WAF, GuardDuty, and CloudWatch
• AWS Step Functions
• AWS Database Migration Service (DMS)
• AWS disaster-recovery design and implementation

Infrastructure as Code

• Advanced Terraform experience with reusable module design
• Remote state management using S3 and DynamoDB locking
• Git-based infrastructure workflows

Containers

• Strong Docker experience
• Container logging, troubleshooting, and debugging
• ECS architecture design and operational management

CI/CD

• GitHub Actions pipeline development and optimization
• Git workflows and branching strategies
• Experience with Amazon ECR

Networking

• Secure subnet and network segmentation architecture
• TLS/SSL certificate lifecycle management (ACM)
• DNS management using Route 53
• Load balancing strategies and traffic routing

Programming & Scripting (Mandatory)

• Python (mandatory): automation, boto3, Lambda tooling, internal platform tooling
• Bash scripting (mandatory): CI/CD scripting, automation, operational tooling
• Strong ability to build internal automation and developer productivity tools

Nice to have skills:

• Multi-region AWS infrastructure experience
• Observability platform design and SRE practices
• Experience supporting high-availability production systems
• Experience working with distributed international engineering teams

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the widest variety of modern technologies
• Mobilunity Medical Insurance program designed to meet our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Never-ending fun: sports events, tournaments, music band, multiple affinity groups

🐳 Come on board, and let’s grow together! 🐳

We’re building a next-generation cybersecurity platform from scratch - and we need a Senior Full Stack Developer who’s ready to own the product end to end. If you love shipping fast, writing clean code, and working at the intersection of security and great UX, this is your role.

What You’ll Do:

• Shape the product from day one: Architect and ship a web-based cybersecurity platform built for speed, security, and scale.
• Drive features end to end: Take ownership across the entire stack - from early design through deployment and iteration.
• Work closely with the team: Partner with product, design, and fellow engineers to solve hard problems and move fast.

• Keep the bar high: Write clean, well-tested code, build secure APIs, and champion code reviews across the team.

   

Must-Have Requirements:

• At least 5 years of professional Full Stack development - this is a senior role and we need someone who can hit the ground running and lead from day one.
• You actively use AI coding tools (GitHub Copilot, Cursor, or similar). They’re part of our daily workflow.
• Deep hands-on experience with React, TypeScript, Node.js, and Python. This is what we build with every day.
• You know your way around PostgreSQL, MongoDB, and can work comfortably across both SQL and NoSQL databases.
• Real-world experience deploying and running services on AWS with Docker and Kubernetes.
• You’re self-driven, naturally curious, and energized by shipping things that actually matter.

Who we are:
Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries. 

About the Product:

Zenity is the first security governance platform built specifically for AI Copilots, Low-Code/No-Code applications, and business-led development. Enterprises today create thousands of automations, workflows, copilots, and integrations outside traditional R&D—introducing new, fast-moving security risks. Zenity provides organizations with:

• Real-time detection of misconfigurations, unsafe data flows, and policy violations
• Centralized visibility across hundreds of business-driven apps and automations
• Security guardrails for GenAI and LLM-powered tools
• Prioritized vulnerability reports and guided remediation

About the Role:

Zenity is hiring a Senior Backend Engineer to help drive the evolution of its security platform for AI and Low-Code ecosystems. This role is ideal for engineers who enjoy building large-scale, cloud-based systems with real enterprise impact.

You will work in a dynamic, Agile environment, contributing to the continuous development, scaling, and improvement of the platform.

Engineering Culture:

At Zenity, we work with an AI-first mindset. Our engineering teams actively leverage AI throughout the entire development lifecycle — from ideation and design to implementation and production.

If AI-assisted development is already embedded in your workflow and influences how you approach engineering challenges, this role was built for you.

Key Responsibilities: 

• Design and build backend services powering security governance for GenAI, Copilots, and Low-Code platforms
• Deliver end-to-end product features used by enterprise customers at scale
• Develop detection logic, data flows, and validation layers for complex workflows and automations
• Work with distributed systems, microservices, and cloud-native components
• Build and optimize SQL schema, queries, data models, and near-real-time processing pipelines
• Leverage AI tools (Copilot, Cursor, Claude Code, etc.) extensively as a regular and consistent part of the day-to-day development workflow: to accelerate design, implementation, refactoring, and debugging
• Participate in design reviews, collaborate closely with product and security teams, and contribute thoughtful technical decisions
• Implement security-focused backend solutions that help enterprises adopt AI responsibly

Required Competence and Skills:

• 7+ years of experience in backend software development (Python, Java, Kotlin, C#, Go, Node.js, Scala) with proven delivery of production features, working on core product systems with real user impact
• Strong SQL fundamentals; hands-on experience with PostgreSQL/MySQL plus familiarity with MongoDB or DynamoDB
• Strong SQL fundamentals; hands-on experience with PostgreSQL/MySQL plus familiarity with MongoDB or DynamoDB
• Experience building distributed systems or microservices, including observability and CI/CD automation
• Experience working with AI agents or copilots (e.g. GitHub Copilot, Cursor, Claude Code, or similar) as part of your daily development workflow
• Understanding of AI-first development principles, such as prompt/context engineering, human-in-the-loop workflows, and validation of AI-generated code
• Solid cloud background (AWS preferred) and hands-on work with Docker and container-based deployments
• Experience contributing to high-scale or customer-facing products
• Experience designing ETL/ELT pipelines or large-scale data systems
• Strong communication skills in English, plus experience collaborating with distributed teams
• Ownership mindset and the ability to take a feature from design to production

Nice to have:

• Background in data engineering, streaming, or maintaining near real-time data pipelines
• Hands-on with Kubernetes
• Experience with workflow orchestration (Temporal, Cadence, or similar)
• Ability to work across multiple languages (Python + Go or Node.js)

Golden Panda Marketing is an international, performance-driven affiliate company. We don’t just "build brands"—we connect people with products that genuinely improve their lives (Health & Lifestyle) and scale them via paid traffic.

We are obsessed with measurable ROI, data-driven decisions, and moving fast. If you are a Google Ads expert who thrives on scaling profitable campaigns, we want you on our team.
 

What You’ll Do

• Launch & Scale: Take full ownership of launching, testing, and scaling Google Ads campaigns from scratch.
• Multi-Channel Strategy: Work primarily with Demand Gen, Search, and Display (depending on your specific expertise and performance).
• Data-Driven Optimization: Constantly optimize toward strict KPI targets (CPA/ROAS). We value speed and data over guesswork.
• Budget Management: Manage and allocate budgets across various GEOs and campaigns, doubling down on winners.
• Creative Innovation: Collaborate with the team to test new creatives, angles, and landing pages to stay ahead of the market.

Requirements

• Experience: 2+ years of hands-on experience as a Google Media Buyer or Performance Marketer (ideally within Health, Lifestyle, or E-commerce niches).
• Profitability: A proven track record of running campaigns independently and scaling them profitably.
• Analytical Power: Strong grasp of core metrics (CTR, CPC, CVR) and a deep understanding of unit economics (CPA/ROAS).
• English Proficiency: Comfortable working in English (both written and spoken) within an international environment.
• Agility: A "move fast" mindset and the ability to pivot strategies based on real-time data.

What’s In It For You

• 100% Remote: Work from anywhere in the world.
• Uncapped Earning Potential: A competitive base salary (fix) plus high performance-based commissions.
• Resources: Access to the budgets and tools you need to hit your targets without bureaucratic hurdles.
• Direct Impact: Your results are visible, and your ideas are implemented quickly.

Ready to scale with Golden Panda? Send us your CV and a brief overview of your best performance cases.

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

We're looking for an experienced Senior HTML/Markup Developer to join our development team in Lisbon, Portugal!

✅ Responsibilities:
✔️ Develop efficient, fast, and adaptive layouts of interfaces;
✔️ Collaborate with developers and web designers to improve the product;
✔️ Introduce ideas, solutions, and optimize existing applications.

✅ Requirements:
✔️ 5+ years of professional experience as an HTML coder;
✔️ Excellent knowledge of HTML and CSS;
✔️ Good understanding of UI/UX design and cross-browser layout;
✔️ Strong knowledge of CSS/JS animation;
✔️ Experience working with CSS Pre-Processors: Sass/Less;
✔️ Understanding of web application performance optimization;
✔️ Experience with Figma / Sketch / Photoshop;
✔️ Advanced level of English.

✅ Nice to Have:
✔️ Understanding of front-end build tools (Gulp, Webpack, etc.);
✔️ Knowledge of HTML email templates;
✔️ Experience working with CSS frameworks;
✔️ Experience working with template engines (Pug, Handlebars, etc.);
✔️ Experience with Canvas API / WebGL / ThreeJS / GSAP.

✅ We offer excellent benefits, including but not limited to:
🧑🏻‍💻 Learning and development opportunities and interesting, challenging tasks;
✈️ Relocation package (flight tickets + 2-week hotel stay);
📚 Language development support and partial compensation for classes;
🎁 Birthday celebration gift;
🏝 24 working days of Annual Vacation for proper rest.

Join BrainRocket and rock with us! 🚀

We are looking for a true Polyglot Engineer to join our team for a long-term collaboration. In the fragmented world of Web3, the ability to bridge different technologies is a superpower. We need a specialist who can architect and build the critical off-chain infrastructure that powers decentralized applications. If you are proficient in Rust but comfortable diving into C++, Python, and Node.js to get the job done, this role is for you.

Who are we?

We are Out Of The Box Systems: a Ukrainian team of passionate, battle-tested engineers and creators united by one goal—delivering real results with clarity, precision, and autonomy. We champion a flexible, pragmatic approach over rigid, static processes. While our roots and primary team are in Ukraine, we collaborate with top talent from various labor markets. We specialize in demanding fields like Rust-first development, AI Engineering, and Computer Graphics, blending performance, security, and innovation into every project. We are deeply invested in the growth of our team members, believing that a person's ability to learn and their openness to feedback are the true keys to long-term success. Our team thrives on solving hard problems and doing the heavy lifting so our clients don’t have to.

Workload

• Full-time, remote collaboration.
• Flexible schedule, with expected availability for team syncs.
• Project-based workload with a focus on clear deliverables.

Responsibilities

• Design, implement, and maintain high-performance backend services and indexers using Rust as the primary language.
• Integrate with diverse blockchain nodes and legacy systems, utilizing C++ for performance-critical modules or native bindings.
• Develop robust APIs and tooling scripts using Node.js and Python to ensure seamless interaction between on-chain data and client applications.
• Architect scalable data pipelines that can handle the asynchronous nature of blockchain events reliably.
• Act as a bridge between technologies, mentoring team members on how to effectively navigate a multi-language stack.

Required Skills

• Polyglot Proficiency: You must be comfortable working in a multi-language environment.
  • Rust: Strong proficiency for core backend logic and safety.
  • C++: Experience with systems programming, reading legacy code, or performance optimization.
  • Python: Proficiency for data processing, testing frameworks, or rapid scripting.
  • Node.js: Experience with the JS/TS ecosystem, particularly for Web3 SDKs and lightweight services.

• Backend Architecture: Deep understanding of API design (REST/gRPC), database modeling (SQL/NoSQL), and microservices.
• Distributed Systems: Understanding of eventual consistency, message queues, and handling asynchronous events.
• Intellectual Flexibility: The ability to pick the right tool for the job and adapt quickly to new libraries or protocols.
• English Proficiency: Upper-Intermediate (B2) or higher.

Preferred Skills

• Ethereum & EVM: Deep understanding of the Ethereum ecosystem, JSON-RPC standards, event logs, and ABI decoding.
• Major Chains: Experience integrating with other major networks (Solana, Near, Cosmos, or Bitcoin).
• Blockchain Nodes: Experience running or modifying nodes (e.g., Geth, Casper Node, Substrate).
• DevOps: Experience with Docker, Kubernetes, and CI/CD pipelines.
• Cryptography: Basic understanding of cryptographic primitives used in blockchain (hashing, signatures).

What you get

• The opportunity to work on complex, high-impact infrastructure projects where your versatility is a major asset.
• A transparent, friendly, and supportive team environment that values ownership and competence.
• A clear path for growth, where you are encouraged to experiment with and master new technologies.
• Competitive compensation based on your skills and experience.
• This is a long-term collaboration based on a 2-year B2B contract, reflecting our mutual investment in your growth and success with our team.

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest AI communities in Europe.

About the role:
We are looking for a hands-on Sr. Machine Learning / Computer Vision Engineer with strong practical experience in designing, training, evaluating, and improving vision systems for real-world applications. The ideal candidate combines solid theoretical ML/CV fundamentals with an engineering mindset and is comfortable taking ownership of the full pipeline, from data preparation and experimentation to model optimization and deployment.

Responsibilities:
- Design, train, evaluate, and improve machine learning and computer vision models for real-world production use cases
- Build and maintain end-to-end ML pipelines, including data collection support, preprocessing, feature engineering, training, validation, and inference
- Develop solutions across both computer vision and machine learning tasks depending on business needs
- Perform error analysis, diagnose model weaknesses, and drive improvements in accuracy, robustness, and reliability
- Select and justify appropriate methods and model architectures based on dataset characteristics, product constraints, and deployment requirements
- Work with challenging real-world data, including noisy, limited, imbalanced, or weakly labeled datasets
- Collaborate with engineering and product teams to translate business problems into practical ML solutions
- Contribute to production-ready development with a focus on maintainability, reproducibility, and performance

Requirements:
- 3–5+ years of professional experience in Machine Learning / Computer Vision
- Strong senior-level practical expertise in computer vision, machine learning, and applied model development
- Hands-on experience with tasks such as object detection, image classification, anomaly detection, feature-based approaches, or similar
- Solid understanding of classical ML methods, including tree-based models, linear models, feature engineering, model selection, and evaluation
- Strong Python skills and practical experience with PyTorch, OpenCV, and common ML tooling
- Experience building full ML workflows including data preparation, augmentation, preprocessing, training, validation, testing, and deployment handoff
- Strong understanding of model evaluation, debugging, overfitting, generalization, optimization, and experiment-driven improvement
- Ability to write clean, modular, maintainable code and independently own technical solutions
- Strong analytical thinking, engineering maturity, and problem-solving skills

Nice to Have:
- Experience in adjacent ML domains such as time-series, audio, or NLP
- Experience with embedding-based methods, metric learning, retrieval systems, or memory-bank approaches
- Practical experience with model optimization techniques such as quantization, pruning, distillation, or related efficiency-focused approaches
- Experience working with real-world industrial datasets and ambiguous problem formulations
- Knowledge of software engineering best practices, reproducible experimentation, and pipeline design

We offer:
- Free English classes with a native speaker and external courses compensation;
- PE support by professional accountants;
- Medical insurance;
- Team-building events, conferences, meetups, and other activities;
- There are many other benefits you’ll find out at the interview.