Krzysiek Derezinski

I've spent over 18 years testing large-scale software in international environments, from enterprise PLM and banking platforms to pharmaceutical applications and 3D/CAD web products.

At Twindo, I architected and maintained Playwright and TypeScript end-to-end suites, validated complex 3D UI and spatial-data rendering, and used Claude AI and Gemini to accelerate test generation, debugging, and edge-case coverage.

Across EPAM Systems, Craftware, GFT Poland, and All, I've built Java and Selenium automation frameworks, REST Assured API suites, database validation checks, and Jenkins CI/CD pipelines. I've also created test strategies, regression plans, and detailed TestRail documentation while partnering with developers, analysts, and project managers.

Earlier at Infomedia and Transition Technologies, I managed release testing, mentored junior QA colleagues, and delivered QA, development, and administration work for clients including Airbus, Adidas, ABB, and EFW Dresden. I'm looking to help a business grow while continuing to develop my testing skills.