lever
Senior Performance Test Engineer (k6)
XM
Greece, USA
Full-time
Senior · 5+ years experience
Hybrid
Discovered 2 weeks ago
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The main responsibilities of the position include:
Define and refine performance testing strategy across the company
Develop and maintain performance testing scripts using K6 and JavaScript/TypeScript, focusing on reusable and scalable testing approaches
Execute various types of performance tests (load, stress, soak) on REST and GraphQL APIs
Monitor and analyze test results using tools like Grafana and Prometheus, providing actionable recommendations
Collaborate with engineering teams to identify and troubleshoot system performance bottlenecks
Apply performance best practices in Spring Boot, JVM, and microservice-based environments
Integrate performance tests into CI/CD pipelines (GitLab, Jenkins) to enable continuous validation
May take on mentorship or leadership responsibilities over engineers within the team over time
Main requirements:
BSc/MSc in Computer Science, or related discipline
5+ years of hands-on experience in QA
2+ years of experience in performance testing using tools like K6 or Gatling
Proficiency in JavaScript/TypeScript for writing test scripts
Strong experience in API performance testing (REST, GraphQL), including rate limiting and caching strategies
Familiarity with Spring Boot applications and microservices architecture
Experience working in Docker/Kubernetes environments, including performance-related configurations (HPA, resource limits, etc.)
Proficiency with monitoring/observability tools such as Grafana, Prometheus, etc.
Experience integrating testing into CI/CD pipelines (GitLab CI, Jenkins)
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