Performance Test Engineer

At Mindboxwe connect top IT talents with technology projects for leading enterprises across Europe.

Lead the Future of Performance & Non-Functional Testing!

Are you ready to take ownership of performance and resilience testing in a world-class technology transformation programme? Join our client’s team as a Performance Test Engineer and play a key role in delivering scalable, reliable, and secure global solutions.

Sounds like your kind of challenge?

#LI-Hybrid: 6x/month from the office in Kraków

Responsibilities

• Flexible cooperation model - choose the form that suits you best

  (B2B, employment contract, etc.)

• Hybrid work setup - 6x/month from the office in Kraków
• Collaborative team culture - work alongside experienced professionals eager to share knowledge
• Continuous development - access to training platforms and growth opportunities
• Comprehensive benefits - including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment - laptop and essential software provided

Requirements

• Own and maintain the Performance & Non-Functional Testing strategy for the programme.
• Define and execute comprehensive test strategies covering load, stress, failover, HA, and disaster recovery testing scenarios.
• Collaborate closely with Scrum teams, Architects, DevOps, and support engineers to embed performance requirements in delivery pipelines.
• Select appropriate tooling (e.g., JMeter, Gatling, LoadRunner, NeoLoad) and define long-term strategy for environments and resources.
• Oversee test execution, monitoring, and reporting; provide dashboards, KPIs, and clear risk-based assessments.
• Analyse application performance using profilers, logs, and system metrics; identify bottlenecks and drive remediation plans.
• Ensure integration of test results into CI/CD pipelines and reporting frameworks.
• Lead and mentor Performance Testing engineers, fostering a quality-first culture.
• Produce clear documentation and reports for stakeholders, demonstrating system readiness and compliance.

Note:Detailed project information will be shared during the recruitment process.

Benefits

• Proven expertise in Performance & Non-Functional Testing for enterprise-level systems, including load, stress, failover, HA, disaster recovery testing.
• Strong hands-on experience with performance test tools (JMeter, Gatling, LoadRunner, NeoLoad or similar).
• Practical knowledge of cloud-based environments (Google Cloud Platform highly desirable).
• Experience defining end-to-end testing strategies, selecting tooling, and driving governance across large programmes.
• Strong scripting/coding skills (Python, Java, Scala) and ability to test APIs, containers, serverless, message queues, and GDBMS platforms.
• Familiarity with CI/CD, observability tooling (e.g., AppDynamics, Datadog), and Infrastructure-as-Code concepts.
• Excellent leadership, stakeholder management, and communication skills.
• Experience delivering solutions in both Agile and Waterfall delivery models.

Nice to Have

• Exposure to Identity & Access Management (IAM) platforms.
• Experience with GCP, Kubernetes, SaaS performance testing, and DevSecOps approaches.
• Familiarity with GitOps, policy-as-code, and advanced monitoring solutions.

Joining this project you’llbecome part of Mindbox - a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’llback you up every step of the way, accelerate your development, and ensure your skills make a difference.