Senior Quality Assurance Engineer

Role Summary
We're looking for a Senior Quality Assurance Engineer to take end-to-end ownership of application testing and production readiness for our trading platform. This is a hands-on, high-ownership role that spans building test suites, executing detailed functional and edge-case testing, validating APIs, and reporting production-ready results ? critical to protecting a low-latency, high-stakes trading environment. The role also comes with the responsibility of mentoring a junior QA engineer.

Key Responsibilities

1. Test Strategy & Suite Design

Prepare test suites based on application requirements and validate across devices of different sizes, OS versions, and configurations.

Design and maintain a regression test suite to safeguard existing functionality as new features ship.

Get involved early in requirement discussions and provide feedback from a user and testability perspective.

2. Functional, Edge Case & API Testing

Prepare detailed functional test cases along with edge cases, particularly around trading workflows, order execution, and market data scenarios.

Conduct thorough API testing to validate request/response behavior, data accuracy, and error handling.

Deploy the backend locally for testing purposes as needed.

3. Production Readiness & Reporting

Prepare production-ready test reports with clear pass/fail status, severity, and supporting evidence.

Efficiently log, triage, and track bugs through resolution, ensuring nothing critical slips into production.

Own release sign-off by confirming builds meet quality and readiness criteria before go-live.

4. Trading Domain & Risk-Aware Testing

Apply working knowledge of stock markets, futures & options, and trading terminology to design realistic, high-impact test scenarios.

Test under conditions that mirror live market volatility and high-frequency usage to catch issues that only surface under load or during trading hours.

Provide responsive, hands-on QA support during trading hours to help triage and validate fixes quickly.

5. Team Mentorship & Stakeholder Collaboration

Mentor and manage a junior QA engineer reviewing test cases, guiding best practices, and ensuring quality of delivery.

Collaborate with founders and product stakeholders to translate trading and business requirements into clear, functional test plans.