Hi, my name is
Oleh Bairak
QA Tech Lead & Test Infrastructure Engineer
12+ years building quality into products. From AAA gaming at Ubisoft to blockchain at Matter Labs & TON — I design test strategies, scale QA teams, and ship reliable software.
Years Experience
Companies
Countries Explored
// about me
Who I Am
I'm a QA Tech Lead and Test Infrastructure Engineer based in Malaga, Spain. Originally from Ukraine, I've built my career across 7+ companies and multiple industries — from AAA gaming to blockchain to automotive SaaS.
My approach is simple: quality isn't a phase — it's a culture. I design test strategies from scratch, build scalable automation frameworks, and mentor teams to think quality-first. Whether it's a Web3 protocol or a B2B platform, I focus on real impact — fewer bugs in production, faster releases, and teams that own their quality.
Currently working as a Test Infrastructure Engineer / SDET, building AI-driven testing solutions and scalable CI/CD quality gates.
// skills & tools
What I Work With
A broad toolkit refined over 12+ years — from manual exploratory testing to building full automation infrastructure.
Languages
Testing
Performance
DevOps & CI/CD
Databases
API & Tools
QA Management
Blockchain QA
// portfolio
Work Examples
9 flagship case studies showing how I approach quality engineering — each one a complete story from problem to impact.
I Think
Strategy, leadership, and quality culture
- ▸ Building QA teams from zero
- ▸ Release process & quality gates
- ▸ Data-driven QA metrics
I Build
Frameworks, pipelines, and infrastructure
- ▸ Scalable test frameworks
- ▸ CI/CD with quality gates
- ▸ Performance testing at scale
I Innovate
AI integrations and smart tooling
- ▸ AI-powered test generation
- ▸ Smart alerting & observability
- ▸ Automated bug capture & triage
// work experience
Where I've Worked
Test Infrastructure Engineer / SDET
Telemetry
- ▸ Designed scalable test infrastructure for backend and frontend systems
- ▸ Built automated test frameworks from scratch — API, UI, and integration layers
- ▸ Implemented AI-driven testing solutions for coverage optimization and failure analysis
- ▸ Integrated automated suites into CI/CD pipelines with continuous quality gates
- ▸ Established full QA release lifecycle from strategy to production readiness
QA Tech Lead
TON
- ▸ Created full QA roadmap, team structure, and test strategy across 4 projects
- ▸ Designed scalable test frameworks using Playwright + TypeScript for Web3/SaaS
- ▸ Integrated K6 load testing with CI/CD, alerts via BetterStack, dashboards in Grafana
- ▸ Automated API flows and PostgreSQL services — reduced production issues by 40%
- ▸ Mentored and scaled the QA team with metrics-driven culture
QA Tech Lead (Contract/Advisory)
Entangle
- ▸ Led QA for a blockchain gaming system and 8+ cross-functional projects
- ▸ Set up QA strategy from zero during high-risk period with no processes in place
- ▸ Coordinated across engineering, product, and DevOps for stable releases under pressure
Sr. General QA (Automation + Manual)
Matter Labs
- ▸ Tested blockchain tech — Bridges, Portals, Nodes, CLI, Block Explorers
- ▸ Built automation suites with JavaScript/TypeScript, Playwright, and Jest
- ▸ Led new QA approaches with full documentation and tooling (Notion, Allure)
- ▸ Conducted UAT across iOS, Android, and Desktop platforms
- ▸ Integrated QA into CI/CD workflows with PostgreSQL and GitHub CI
Sr. General QA (Automation + Manual)
Motorik
- ▸ QA for B2B automotive SaaS serving 3,000+ dealerships across 7 EU markets
- ▸ Designed API testing frameworks (REST/SOAP) for vehicle catalog integrations
- ▸ Reduced critical bug recurrence by 35% through support-driven bug triaging
- ▸ Data integrity testing across PostgreSQL databases and marketplace systems
Sr. QA Integration Engineer
Quickspin
- ▸ Functional and compliance testing of a gambling platform across multiple countries
- ▸ API and database testing (SQL) for data integrity and backend logic
- ▸ Implemented Cypress + Cucumber automated test scenarios for frontend regression
Sr. QA Engineer
Cloudbeds
- ▸ QA for Web2 CRM system for hotel management (booking flows, customer ops)
- ▸ Collaborated with Booking.com, Airbnb, and stakeholders across 5 countries
- ▸ Full range of testing: Functional, Regression, Sanity, Smoke, Exploratory, Cross-browser
- ▸ API testing with XML/JSON — White-box, Black-box, and Grey-box approaches
Junior QA — Live QA Lead
Ubisoft
- ▸ Progressed from Junior QA to Live QA Lead through key compliance and testing initiatives
- ▸ FTC compliance specialist — collaborated with Sony and Microsoft directly
- ▸ Managed Live QA department operations and cross-team coordination
- ▸ Tested AAA titles across PC, PlayStation, Xbox, and Nintendo Switch
- ▸ Mentored junior engineers, conducted interviews, set OKRs and SMART goals
// get in touch
Let's Work Together
Looking for a QA Tech Lead, Test Infrastructure Engineer, or just want to chat about quality engineering? My inbox is always open.