Responsibilities * We are seeking a Senior QA Engineer to join our Card Processing team * You will design and build the quality systems that keep our payment platform reliable at scale - in an environment where new code is produced using AI tooling and judgment is the bottleneck, not generation speed * This is not a traditional “write and execute test cases” role * We believe software engineers own their tests — your job is to make them better at it * You will own the sensor strategy that catches what AI gets wrong, verify that test intent matches business requirements, and raise the quality bar for the entire team * Design and implement layered quality sensors across our CI/CD pipeline — from static analysis to AI-driven code review passes * Improve and maintain E2E test suites for critical payment flows (card authorisation, clearing and settlement, tokenisation, 3D Secure) * Review PRs for test intent alignment — ensuring AI-authored and human-authored code meets the same quality bar * Identify test coverage gaps and prioritise them by risk (customer impact, regulatory exposure)



* Build load testing and performance validation frameworks * Collaborate with the team on quality strategy — you raise the bar, you don’t gatekeep it * Explore chaos engineering approaches to validate system resilience * Contribute to audit-trail thinking — ensuring generated diffs and suppressed checks are traceable and defensible Benefits * Ongoing learning and development opportunities * Retirement planning * Charitable donation matching * Volunteer opportunities * Employee development fund * Monthly happy hours * Free haircuts in our salon located at HQ * Complimentary dry cleaning at HQ * Valet parking at HQ * Shuttle service to/from NYC * Gym located at HQ * River Cafe at HQ Qualifications * Strong proficiency in English — written and verbal * Familiarity with CI/CD pipelines, containerisation, and infrastructure-as-code * Experience testing RESTful APIs and event-driven systems * St

📌 Senior QA Engineer (Cataluña)
🏢 Cross River
📍 Cataluña