Informacje o stanowisku

Employer: International cassino games studio

Location: until first quarter of 2027 remote, then hybrid from Warsaw

Salary: up to 5900 EUR net 

Cooperation model: B2B

Start date: ASAP

Recruitment process: 2 online interviews and recruitment task 

Technology stack: k6 or Gatling or JMeter or or Locus, Grafana or Datadog or New Relic, WebSocket

• 5+ years of hands-on performance and load testing experience on production-scale systems;
• Strong practical experience with k6, Gatling, JMeter, or Locust — youve built complex scripts from scratch; 
• Good understanding of backend architecture, databases, and how infrastructure behaves under load;
• Comfortable reading and interpreting metrics from tools like Grafana, Datadog, New Relic, or similar;
• Solid understanding of HTTP, WebSockets, and real-time communication protocols;
• Experience testing APIs under load including auth flows, concurrent sessions, and stateful scenarios;
• Familiar with CI/CD pipelines and integrating performance tests into automated build processes;
• Fluent with Git and working within agile engineering teams;
• Curious by nature — you enjoy understanding why a system behaves the way it does under pressure;
• Sharp analytical mind — you can look at a wall of metrics and know exactly where to focus;
• Clear communicator — you can explain a complex performance issue to a developer and a product manager in the same conversation;
• Self-driven — you dont wait to be told theres a problem; you go looking for one;
• Fluent English - at least B2+ level;

Employer: International cassino games studio

Location: until first quarter of 2027 remote, then hybrid from Warsaw

Salary: up to 5900 EUR net 

Cooperation model: B2B

Start date: ASAP

Recruitment process: 2 online interviews and recruitment task 

Technology stack: k6 or Gatling or JMeter or or Locus, Grafana or Datadog or New Relic, WebSocket

,[Design and execute load, stress, spike, and soak tests against critical platform flows; , Analyze results and pinpoint exactly where and why performance degrades — not just that it does; , Work closely with backend engineers to understand system architecture and target the right bottlenecks;, Build and maintain performance test scripts that are reusable, version controlled, and easy to update as the product changes; , Integrate performance tests into CI/CD pipelines to catch regressions early;, Define performance benchmarks and thresholds in collaboration with engineering and product teams;, Monitor platform behavior under load using observability tools and correlate metrics with test results;, Document findings clearly and present actionable recommendations to engineering teams; Requirements: k6, Gatling, JMeter, Locus, Grafana, Datadog, New Relic, WebSocket

Praca Warszawa

Tester Warszawa

Administrator IT Warszawa

Specjalista ds. bezpieczeństwa IT Warszawa

Warszawa - Oferty pracy w okolicznych lokalizacjach