At Mindbox we 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
What you’ll be doing
- 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.
What you get in return
- 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
Who we’re looking for
- 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’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.
I will handle your recruitment
Martyna Zakrzewska
