You know how frustrating a slow application is, and you have the technical curiosity to figure out exactly why it's lagging. You look at code, traffic, and infrastructure to find bottlenecks before they impact users. If you treat performance testing as a craft rather than a checklist, this is for you. ABOUT JETBRAINS We create intelligent software development tools for developers and teams. More than 15 million users, over 300,000 companies, and 88 of the Fortune Global Top 100 rely on our products to solve real, complex problems. Our mission is simple: make development teams more productive and AI adoptable at scale. WHAT YOU’LL DO YouTrack has grown from an online bug tracker into a comprehensive project management system used by teams worldwide. As our user base expands, maintaining top-tier performance and reliability is critical. We need a QA Performance Engineer who can help implement our performance testing strategy and uncover issues before they reach our users. You will join a collaborative team of 46 people who use Scrum and speak English as their shared working language. In this role, you won’t just run tests – you will influence how new features are planned and released. You'll work closely with developers to recreate complex user scenarios and build long-term confidence in our platform. Day to day, you will: * Participate in performance testing and analysis using both manual and automated approaches. * Write new automated performance tests and maintain the existing test suite. * Reproduce complex performance bugs and issues reported by users. * Configure performance test invocations as an integrated part of our continuous integration (CI) cycles. * Collaborate on functionality planning, incident investigation, and product releases. WHAT YOU’LL BRING * A deep care for software quality and a refusal to settle for "good enough." * Strong analytical thinking to track down the root cause of systemic issues rather than just treating symptoms. * The ability to work independently, manage your own priorities, and take full ownership of outcomes. * Excellent communication skills to discuss technical problems transparently with developers. * A collaborative mindset to work seamlessly across distributed teams and time zones. * Curiosity and a drive to leave systems cleaner and faster than you found them. WHAT YOU’LL NEED * Proven experience running and analyzing both manual and automated performance tests. * Solid understanding of HTTP and TCP/IP protocols. * Proficiency with performance testing tools such as JMeter, Gatling, or k6. * Experience testing web applications manually and via automation frameworks like Selenium or Playwright. * Familiarity with teamwork tools, including issue trackers, version control systems, and CI/CD servers. * Comfort working in command-line environments using tools like Bash, grep, SSH, and curl. * Strong spoken and written English language skills. * Experience with Docker, Kubernetes, REST API testing, or platform-specific performance monitoring (top, htop, perfmon, etc.) is a strong plus. WHAT SUCCESS LOOKS LIKE Success means earning trust through solid technical decisions and uncovering regressions early. You’ll know you’re succeeding when our CI cycle catches performance drops automatically, user-reported performance bottlenecks decrease, and the team relies on your insights during feature planning to keep YouTrack fast and stable. Why join JetBrains?  * Strong base salary. We offer competitive pay that reflects your skills and experience. * Flexible work location. Enjoy the freedom to work from home or from the office. * Remote work. Spend up to 30 days per year working remotely from abroad. * Extra time off. More days to relax, recharge, and do the things you love. * Medical insurance allowance. Enjoy peace of mind for you and your family * Learning and development opportunities. Access to conferences, courses, and language classes. * Relocation support. We help make your move as smooth and stress-free as possible. * Language classes. Pick up the local language or sharpen your English skills. * Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays. * Mental health support. To help you feel your best, we provide easy access to professional mental health services. * Sports benefit. Enjoy an on-site gym or sports club stipend. * Internal events. Join company-wide celebrations and team gatherings. *Some benefits may vary depending on location. #LI-PR1 We are an equal opportunity employer We know great ideas can come from anyone, anywhere. That’s why we do our best to create an open and inclusive workplace – one that welcomes everyone regardless of their background, identity, religion, age, accessibility needs, or orientation. We process the data provided in your job application in accordance with the Recruitment Privacy Policy.