Senior Performance Tester (41914)

Location: Gdańsk, Gdynia or Warsaw, PolandWorking model: hybrid 2-3 days per week from the preferred office Language: English Contract: B2B, long-term, 12+ months We are looking for an experienced Performance Tester / Performance Test Engineer to join a project focused on performance testing of web-based applications, API, microservices, and PEGA-based systems. This role is ideal for someone with strong hands-on experience in LoadRunner Enterprise (LRE), including scripting with TrueClient and HTTP/HTML protocols, as well as a solid understanding of API and microservices performance testing. Responsibilities • Design, develop, execute, and maintain performance test scripts using LoadRunner Enterprise (LRE). • Create, enhance, and maintain TrueClient and HTTP/HTML scripts for web-based applications. • Conduct performance, load, stress, endurance, and scalability testing. • Prepare performance test plans, workload models, test scenarios, and test reports. • Analyze application and system performance bottlenecks. • Provide recommendations for performance tuning and optimization. • Perform API and microservices performance testing, including service virtualization where required. • Monitor system performance using tools such as Dynatrace, AppDynamics, Splunk, Sysdig, Grafana, or similar. • Collaborate with Development, QA, Infrastructure, and Business teams to identify and resolve performance issues. • Support performance testing activities for applications built on the PEGA platform. Requirements • Minimum 4+ years of hands-on experience in Performance Testing. • Strong expertise in LoadRunner Enterprise (LRE). • Practical experience with TrueClient scripting. • Strong experience with HTTP/HTML scripting. • Good understanding of API and microservices architecture. • Experience in performance testing of PEGA applications. • Strong analytical, troubleshooting, and problem-solving skills. • Good command of English. Nice to have • Experience with monitoring tools such as Dynatrace, Sysdig, AppDynamics, Grafana, and Splunk. • Experience with CI/CD integration for performance testing. • SQL knowledge for backend validation. • Good communication and stakeholder management skills. What we offer • Opportunity to work on complex enterprise-level systems. • Collaboration with experienced Development, QA, Infrastructure, and Business teams. • Work with modern performance testing and monitoring tools. • Project locations available in Gdańsk, Gdynia or Warsaw. • International working environment with English as the main project language. • Long-term cooperation.