Senior Performance Test Engineer – Cyprus, Greece or RemoteThe Role:We are looking for a Senior Performance Test Engineer to join our high-performing team and contribute to the performance, scalability, and reliability of our trading platforms. This role involves hands-on performance testing and analysis in a high-throughput, low-latency environment, collaborating closely with development and infrastructure teams to ensure system efficiency and stability. You will work with modern tools and practices, leveraging K6 with JavaScript/TypeScript, containerized environments (Docker, Kubernetes), and cloud-native performance strategies. While this is primarily a technical, individual contributor role, there may be opportunities to mentor and guide junior engineers on the team as your role evolves.The main responsibilities of the position include:Develop and maintain performance testing scripts using K6 and JavaScript/TypeScript, focusing on reusable and scalable testing approachesExecute various types of performance tests (load, stress, soak) on REST and GraphQL APIsMonitor and analyze test results using tools like Grafana and Prometheus, providing actionable recommendationsCollaborate with engineering teams to identify and troubleshoot system performance bottlenecksApply performance best practices in Spring Boot, JVM, and microservice-based environmentsIntegrate performance tests into CI/CD pipelines (GitLab, Jenkins) to enable continuous validationTake on mentorship or leadership responsibilities over junior engineers within the team over timeMain requirements:BSc/MSc in Computer Science, or related discipline5+ years of hands-on experience in QA2+ years of experience in performance testing using tools like K6 or GatlingProficiency in JavaScript/TypeScript for writing test scriptsStrong experience in API performance testing (REST, GraphQL), including rate limiting and caching strategiesFamiliarity with Spring Boot applications and microservices architectureExperience 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)The following will be considered an advantage:Experience with gRPC, WebSockets, and HTTP/2 performance testingJVM tuning and database performance optimization expertiseFamiliarity with cloud-native performance strategies and service mesh technologies (Istio, Linkerd)Exposure to distributed tracing tools like Jaeger or OpenTelemetryBenefit from:Attractive remuneration packageIntellectually stimulating work environmentContinuous personal development and international training opportunitiesThe Hiring Experience: What Awaits YouLet’s Connect – Intro Chat with Talent AcquisitionDeep Dive – First Interview with Your Future TeamFinal Connection – Final InterviewAll applications will be treated with strict confidentiality!Apply NowLet's start your dream job Apply now Meet JobCopilot: Your Personal AI Job HunterAutomatically Apply to Remote All Other Remote JobsJust set your preferences and Job Copilot will do the rest-finding, filtering, and applying while you focus on what matters. Activate JobCopilot