Senior AQA (JavaScript/TypeScript) Engineer (Performance Focus)Location: Remote from SpainLanguage: Spanish fluency, English Upper-intermediateProject OverviewJoin a high-impact engineering team involved in migrating from a legacy Microsoft Dynamics 2013 system to a modern, high-performance platform. The architectural groundwork is done, and we are entering the live-testing and optimization phase. We’re looking for a Senior QA Engineer with deep experience in performance testing and automated testing frameworks, particularly using JavaScript/TypeScript and Playwright. Your ResponsibilitiesDesign and execute performance test scenarios (load, stress, and endurance).Build and maintain automated test frameworks using TypeScript + Playwright.Identify system bottlenecks and collaborate with dev teams on optimizations.Monitor performance across production and pre-production environments.Embed performance tests into CI/CD pipelines to support continuous delivery.Work closely with QA, development, and business teams to align testing goals.✅ What We’re Looking ForFluent in Spanish.Solid experience with automated E2E testing using TypeScript and Playwright.Familiarity with payment system integration (Skrill, Stripe, PayPal, etc.).Good knowledge of testing best practices, Git, and CI/CD pipelines.Strong communication and teamwork skills.Agile/Scrum experience.⭐️ Nice to HaveExperience with K6 for performance testing.Proven track record in performance testing of complex web applications.Previous work in the gaming or payment industry.Exposure to API testing and monitoring tools.