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We are looking for an experienced Performance Tester to join a team working on banking applications. The main responsibility will be designing and writing performance tests using k6, as well as executing performance testing of systems with k6 and supporting integration testing. This is a time-based contract until the end of June 2026, with the possibility of extension.
Job Responsibility:
Designing and executing performance tests (load, stress, endurance) using k6
Creating and maintaining test scripts in k6
Performing integration and manual testing of banking systems when needed
Analyzing test results and identifying performance bottlenecks
Collaborating with development and DevOps teams to optimize system performance
Preparing reports and presenting test results to stakeholders
Integrating performance tests into CI/CD pipelines
Supporting the team in resolving performance and integration issues
Requirements:
Minimum 3 years of experience in performance testing
Hands-on experience with k6 for performance testing
Experience in integration testing
Knowledge of REST APIs and microservices architectures
Ability to analyze system metrics (CPU, memory, response times)
Experience with monitoring tools (e.g. Grafana, Prometheus)
English at minimum B2 level
Nice to have:
Knowledge of Gatling (additional advantage)
Experience in the banking or FinTech sector
Familiarity with Continuous Delivery practices and Agile environments
Experience with Docker and/or Kubernetes
Knowledge of scripting languages (JavaScript, Python)