Non-FunctionalEngineerLead,Quality

We are FIS. Our technology powers the world’s economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you’re ready to start learning, growing and making an impact with a career in fintech, we’d like to know: Are you FIS? **About the Role** As a Non-Functional Engineer Lead, Quality, you lead the strategy and execution of performance, reliability, and resilience engineering for enterprise-grade applications. You ensure systems meet demanding non-functional requirements across scale, availability, and security in a regulated payments environment. Success is measured by predictable performance, high availability, and production stability across complex distributed systems. This role is based in Warsaw, Poland. **What You Will Be Doing** * Lead non-functional quality strategy across performance, scalability, resilience, and availability. * Design and execute performance, load, stress, and endurance testing for critical applications. * Analyze system behavior using monitoring and observability tools to identify bottlenecks. * Partner with engineering and architecture teams to embed quality early in the SDLC. * Drive performance optimization across Java applications, databases, and middleware. * Establish CI-driven quality gates using automated unit, integration, and non-functional tests. * Validate application behavior across application servers and containerized environments. * Troubleshoot complex production issues and lead root-cause analysis. * Mentor engineers on non-functional testing practices and quality engineering standards. **Required Qualifications** * Extensive hands-on experience in application development and quality engineering. * Strong expertise in Java (JDK 8/17), JEE, Maven, Hibernate, EJB 3.1, MQ, SQL, REST, XML, XSD, and JSON. * Proven experience monitoring and analyzing application performance characteristics. * Advanced skills in designing perf