Performance Testing Expert Architect

Job Description Cyprus, Greece or Remote in Europe  (maximum 2 hours time difference from Cyprus) - we sponsor visa for those who live and relocation support for those who want to relocate in our HQs in Limassol, Cyprus   Note: Profiles with 3+ years of experience with k6 will also be considered for an Associate/Mid level.    The Role: We are looking for a Performance Testing Expert Architect 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: 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 junior 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)  The following will be considered an advantage: Experience with gRPC, WebSockets, and HTTP/2 performance testing  JVM tuning and database performance optimization expertise  Familiarity with cloud-native performance strategies and service mesh technologies (Istio, Linkerd)  Exposure to distributed tracing tools like Jaeger or OpenTelemetry  Benefit from: Attractive remuneration package Intellectually stimulating work environment Continuous personal development and international training opportunities The Hiring Experience: What Awaits You Let’s Connect – Intro Chat with Talent Acquisition Deep Dive – First Interview with Your Future Team Final Connection – Final Interview Worldwiders Recruitment Worldwiders is a global recruitment company specializing in executive search and specialist recruitment worldwide. Since our journey began in 2016, we have become a trusted partner for tailor-made recruitment solutions, connecting top talent with prestigious opportunities across the globe. With a proven track record of more than 7,000 successful placements and 400+ satisfied partners in over 40 countries, our expertise ensures we match the right talent with the right company to drive career growth and organizational success. Worldwiders also serves as the umbrella organization behind our specialized recruitment brands, Nordic Jobs Worldwide and Multilingual Jobs Worldwide. Each brand focuses on specific markets and talent segments, enabling us to deliver highly targeted recruitment solutions while benefiting from the global reach, expertise, and network of the Worldwiders group