Senior SDET – Performance Testing
Location:
Other, Central Europe
Seniority:
Senior
Technologies:
Automation QA

We are seeking a Senior SDET with a strong focus on performance testing of cloud web systems to join a global construction technology platform serving millions of users. This role will be instrumental in designing, executing, and scaling performance and load tests across core systems to ensure a reliable and high-performing experience.

You’ll be working with engineering, DevOps, product, and QA stakeholders across multiple regions. The ideal candidate is analytical, hands-on with testing frameworks, and experienced in system optimization.

  • Design and develop performance test plans for backend services, APIs, and web applications.

  • Execute various performance testing types: load, stress, endurance, scalability, and capacity tests.

  • Analyze results to identify bottlenecks and work with engineering teams to resolve issues.

  • Integrate performance tests into CI/CD pipelines to shift testing left in the development cycle.

  • Monitor performance baselines and regressions across releases.

  • Collaborate with infrastructure and DevOps teams to simulate real-world traffic and usage scenarios.

  • Contribute to performance tuning and root cause investigations for production incidents.

  • 6+ years of experience in quality assurance and in automated testing.

  • Specialization in performance testing for high-scale SaaS environments.

  • Strong experience with tools such as Locust, JMeter, Gatling, or k6.

  • Proficiency in scripting using Python (primary scripting language) or other languages like JavaScript, Groovy.

  • Strong soft skills with experience working within an international and distributed team.

  • Understanding of system architecture, and experience of working with distributed systems, and cloud-native applications.

  • Experience in planning and leading the initiatives and driving them to execution.

  • Hands-on experience with monitoring/APM tools such as Datadog, Grafana, or New Relic.

  • Familiarity with CI/CD systems (e.g., Jenkins, GitHub Actions)

  • Strong analytical, debugging, and communication skills.

  • Familiarity with containerized environments using Docker and Kubernetes.

  • Familiarity with synthetic test data generation and performance testing in non-production environments.

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