Mid/Senior QA Engineer - Jumper

5+ years of experience in QA or software testing Strong hands-on experience with Playwright and Jest for automated and integration testing Solid foundation in API testing, CI/CD pipelines, and end-to-end quality practices Experience or curiosity for blockchain, DeFi, or cross-chain technologies Great communication and collaboration skills Analytical, detail-oriented, and proactive in spotting and solving quality issues Fluent in English Located within the EMEA timezone

Take ownership of QA planning and execution across Jumper.Exchange’s core features Build, maintain, and scale automated testing frameworks with Playwright, Jest, and related tooling Work closely with engineering, product, and security to review requirements, test new releases, and improve our processes Investigate, reproduce, and help resolve production issues Monitor quality metrics and help shape continuous improvement initiatives Champion a “quality-first” mindset within the team