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AI Summary
Design and build a scalable performance testing framework to simulate real-world workloads and identify system bottlenecks. Integrate performance validation into CI/CD pipelines and collaborate with engineering teams to drive system improvements.
About the Role
We’re looking for a Performance Test Engineer to design, build, and own our performance testing solution. You’ll work on a scalable performance framework, simulate real-world workloads, identify system bottlenecks, and integrate performance validation into the engineering lifecycle.
What You’ll Do
- Design and maintain performance test harnesses and load-simulation solutions from scratch.
- Build load, stress, endurance, scalability, and concurrency tests for complex web applications and backend services.
- Create realistic multi-user and high-scale scenarios using synthetic traffic and multi-client orchestration.
- Define performance baselines, SLOs, regression thresholds, and automated quality gates in CI/CD pipelines.
- Integrate performance testing with analytics and observability platforms to provide actionable insights.
- Analyze metrics, logs, traces, CPU, heap, and memory profiles to identify bottlenecks.
- Work with engineering teams to drive performance improvements and turn findings into permanent regression coverage.
What We’re Looking For
Required
- 4+ years of experience building automated test infrastructure or performance and reliability tooling for production systems with TypeScript and Node.js strongly preferred.
- Experience designing load, stress, or concurrency test harnesses from scratch, including synthetic traffic generation, multi-client orchestration, and result analysis.
- Experience with sharded or parallelized performance test execution.
- Solid understanding of web performance, including rendering and interaction latency, main-thread and event-loop contention, memory and garbage collection behavior, and the use of Chrome DevTools or V8 profilers to localize bottlenecks.
- Experience testing distributed, service-oriented backends, including gRPC microservices, PostgreSQL, and Redis or Valkey caching, and reasoning about latency under concurrent load.
- Experience using Playwright to drive real end-to-end user journeys.
- Experience with sharded or parallelized performance test execution.
- A strong quality mindset that treats flaky and non-reproducible tests as bugs and turns performance findings into permanent regression coverage.
- Experience working in a monorepo environment, ideally with Bazel.
- Hands-on experience using AI coding tools such as Claude Code, Cursor, or similar tools.
Nice to Have
- Experience testing spreadsheet, formula, query, or reactive dependency-graph systems.
- Experience testing real-time collaboration systems using Operational Transform or CRDT.
- Experience testing rules, automation, or trigger-action workflow engines.
- Experience with performance testing tools such as k6, Gatling, Locust, or Artillery.
- Experience with observability tools such as Grafana, VictoriaMetrics, Tempo, Prometheus, or Datadog.
We offer:
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- Flexible & remote job
- Paid vacation and sick leave
- Development opportunities in any IT direction
- Personal professional growth
- Up to 100% reimbursement of the participation in core courses and conferences
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