Maksym S.

Ex-Upwork Senior QA Automation Engineer. I built the internal test automation framework used by 50+ QA engineers at Upwork and led QA for payment integrations with Wise, Adyen, Payoneer, PayPal and Bank of America. Now I help startups and product teams catch critical bugs before they reach production. At Upwork I worked on both sides of QA. On the Central QA team, I developed the framework and internal tools behind a 2,500+ test codebase, including a test data service that made test runs 20–30% faster. On the Payments team, I owned QA for integrations with 10 providers, sped up the PR pipeline by 30%, and caught a fee calculation bug before release that would have cost real money. As co-founder and CTO of a carpooling startup, I also build backend and infrastructure myself, so I dig into root causes, not just symptoms. How I can help: - Test automation: Playwright + TypeScript, or Selenium/Ruby — new frameworks or fixing flaky suites - API and payment integration testing, SQL data validation - Mobile testing with Appium - CI/CD integration and QA strategy: test plans, risk analysis, regression process Send me a link to your product and how you release today — I'll reply with where I'd start and which risks I'd check first.