Senior Qa Testing Engineer

Our technology and capital solutions power payments, cards, lending, and digital asset capabilities that move money safely, instantly, and inclusively - trusted by leading fintechs, enterprises, and disruptors across the globe.Guided by a culture of collaboration, curiosity, and purpose, Cross River has been named one of American Banker’s Best Places to Work in Fintech year after year.Whether you’re designing code, solving regulatory puzzles, or developing strategy, you’ll join a team where innovation and integrity drive everything we do - and where your work helps shape the future of finance.Senior QA Engineer - Card Processing 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 5+ years in software engineering with a strong focus on quality and testing (equivalence partitioning, boundary analysis, risk?based prioritization) ~ Proficiency in Go (or strong willingness to learn - test?design thinking matters more than language syntax) ~ Experience testing RESTful APIs and event?driven systems ~ Comfort with regulated environments - you think in terms of audit trails, blast radius, and data classification ~ Strong proficiency in English - written and verbal ~ Experience using observability platforms (Datadog, New Relic, Elasticsearch, Grafana) to investigate issues and validate system behaviour Understanding of failure modes in distributed systems (event ordering, retries, idempotency, eventual consistency)

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 5+ years in software engineering with a strong focus on quality and testing (equivalence partitioning, boundary analysis, risk?based prioritization) ~ Proficiency in Go (or strong willingness to learn - test?design thinking matters more than language syntax) ~ Experience testing RESTful APIs and event?driven systems ~ Comfort with regulated environments - you think in terms of audit trails, blast radius, and data classification ~ Strong proficiency in English - written and verbal ~ Experience using observability platforms (Datadog, New Relic, Elasticsearch, Grafana) to investigate issues and validate system behaviour Understanding of failure modes in distributed systems (event ordering, retries, idempotency, eventual consistency)

Barcelona, España

Our technology and capital solutions power payments, cards, lending, and digital asset capabilities that move money safely, instantly, and inclusively - trusted by leading fintechs, enterprises, and disruptors across the globe. Guided by a culture of collaboration, curiosity, and purpose, Cross River has been named one of American Banker’s Best Places to Work in Fintech year after year. Whether you’re designing code, solving regulatory puzzles, or developing strategy, you’ll join a team where innovation and integrity drive everything we do - and where your work helps shape the future of finance. Senior QA Engineer - Card Processing 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.