Senior QA Engineer
Senior QA Engineer responsible for manual and automated testing of Polymarket's mobile prediction market app on iOS and Android. Split time between hands-on end-to-end testing before releases and improving AI testing harness plus extending automated coverage on core trading flows. Requires proven product company experience, strong communication, and curiosity about product behavior.
About the job
What You'll Do
- Manually test new mobile features end-to-end before each release cutoff, catching issues that matter to real users before they ship.
- Sign off on releases and communicate quality status clearly to engineers, product managers, and leadership.
- Improve our AI testing harness to reduce the volume of repetitive manual verification, using agentic tools to do the tedious work.
- Extend automated test coverage across core trading and market resolution flows, identifying gaps and closing them systematically.
- Dig into product behavior with genuine curiosity, asking why things work the way they do and flagging when something feels off.
- Adapt quickly when priorities shift.
- Work directly with mobile engineers to surface bugs early in the development cycle.
What We're Looking For
- Proven mobile QA experience at a product-focused company, where you saw a product evolve through many iterations.
- Comfortable testing on both iOS and Android, with a strong eye for platform-specific behavior and edge cases.
- Able to move fast without cutting corners in short release cycles.
- Strong communicator who can give clear, honest quality assessments.
- Genuinely curious about how products work under the hood.
- Experience with agentic engineering tools like Claude or Codex to assist in testing workflows.
- (Plus) Experience writing or extending automated tests, whether in a mobile-native framework or otherwise.
- (Plus) Background in fintech, crypto, or trading products.
Benefits
- Competitive salary & equity
- Unlimited PTO
- Full Health, Vision, & Dental coverage
- 401k match
- Hardware setup: new MacBook Pro, big display, & accessories
Skills
Mobile Qa, Ios Testing, Android Testing, Automated Testing, Ai Testing Harness, Agentic Tools, Claude, Codex, Fintech, Crypto
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