Serhii K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Before going independent, I spent 12+ years in QA with world-leading companies including 8 years at PAR Technology (a restaurant ERP company) leading a 25-person QA organization. I'm ISTQB Foundation and ISTQB Advanced Test Manager certified, with 7+ years focused specifically on test automation. What I do best: - Playwright test automation. Migrate flaky, slow or legacy test suites from Selenium or Cypress into fast, maintainable E2E coverage (JS/TS). - AI-accelerated with senior-QA-directed automation. AI drafts test cases and converts manual scripts into automated suites fast. - Build k6 (browser and/or protocol-level) load and stress test suites to surface performance bottlenecks before they hit production. - QA audits. A focused, fixed-scope engagement that finds your highest-risk bugs and gaps fast, with a prioritized action plan. - Manual & exploratory testing, API testing (Postman), and test strategy/process consulting reinforced by AI where it speeds things up, never in place of judgment. Tools: Playwright (JS/TS), Selenium (C#), Postman, BrowserStack, k6, plus AI-assisted test generation and triage. Domain experience: e-commerce, restaurant/hospitality tech, blockchain, real estate, finance & banking, CRM/ERP systems. I work directly with you — no account managers, no junior hand-offs, no bloated team markups. Available during US and UK business hours (overlap until ~2pm ET), fluent English (C1). Let's talk about what's slowing your releases, flaky tests, coverage gaps, an unproven QA process and fix it.