Quality Assurance Manager, Java, JBoss, XML

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.

• 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 performance, high availability, and resilience tests.
• Experience with continuous integration using Jenkins and automated test frameworks.
• Solid knowledge of application servers including WebSphere, WebLogic, JBoss, and Open Liberty.
• Strong database expertise with Oracle or PostgreSQL, including performance tuning.
• Proficiency working in Linux-based environments and container platforms.

Bonus if you have

• Experience with Docker and Kubernetes in production environments.
• Knowledge of Kafka or event-driven architectures.
• Experience in payments domains such as SEPA or SWIFT messaging.
• Advanced REST API design and optimization experience.
• Deep PostgreSQL performance and scalability expertise.

• Personal and professional learning.
• Inclusive, diverse work environment.
• Resources to give back to your community.
• Competitive salary and benefits.