OverviewRole: Senior Test Automation & Performance EngineerLocation: LondonRole Type: ContractOur client is looking for a highly skilled Senior Test Automation & Performance Engineer to join their growing QA Engineering team. This role is pivotal in ensuring the quality, scalability, and resilience of APIs, middleware, and cloud-native services across critical platforms. You'll drive both functional and performance test strategies, build automated frameworks, and shape best practices that enhance testing maturity and delivery efficiency.ResponsibilitiesDesign and maintain backend automated test suites in Python.Build and execute tests for REST APIs, gRPC, and WebSocket services.Develop performance test strategies focused on volume, throughput, and capacity.Integrate automated tests into GitLab CI/CD pipelines in Docker/Kubernetes environments.Define QA standards, recommend tools, and collaborate with engineering teams to drive quality.What We're Looking ForProven experience in backend test automation and API testing.Hands-on knowledge of messaging systems like Kafka, RabbitMQ, or JMS.Strong skills in performance testing using tools like JMeter, k6, or Gatling.Familiarity with cloud platforms (AWS, Azure, or GCP) and CI/CD workflows.Bonus: Experience with Playwright, observability tools, or trading system domains.Seniority levelMid-Senior levelEmployment typeFull-timeJob functionQuality AssuranceWe’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr