# Senior QA Engineer

**Company:** [Polymarket](https://hotfix.jobs/companies/polymarket)
**Location:** New York, NY
**Role:** QA Engineering
**Experience:** 5+ years
**Skills:** mobile qa, ios testing, android testing, automated testing, ai testing harness, agentic tools, Claude, Codex, Fintech, crypto
**Posted:** 2026-07-20

> 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.

## Job Description

## 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

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