Senior Performance Tester

Location: Gdańsk, Gdynia or Warsaw, Poland

Working 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.