Senior Performance QA Engineer

Ciklum is looking for a Senior Performance QA Engineer to join our team full-time in Ukraine.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As a Senior Performance QA Engineer, become a part of a cross-functional development team engineering experiences of tomorrow.

About Quality Engineering Team: 

Quality Engineering Center of Excellence is an international award-winning Quality Engineering department that has rapidly evolved over the past 7 years to become a mature Quality Engineering service provider with 500+ professionals working in 7 main directions: QA Consulting and Management, DevOps, Manual, Automation, Support, Performance and Cyber Security.

Responsibilities:

• Design, implement, and execute performance test plans and scenarios using Gatling Cloud and Gatling DSL
• Analyze system performance, identify bottlenecks, and recommend tuning strategies
• Develop custom performance/load scripts for APIs and microservices using Scala-based Gatling framework 
• Define and implement SLAs, performance benchmarks, and KPIs for services
• Integrate performance testing into CI/CD pipelines (e.g., GitLab, GitHub Actions)
• Collaborate with development, SRE, and QA teams to interpret results and drive improvements
• Monitor and report performance metrics using tools like Grafana, Prometheus, InfluxDB, or cloud-native observability stacks
• Participate in incident analysis and postmortems where performance regression is suspected
• Stay up to date with industry trends in performance engineering and microservice observability

Requirements:

• 2+ years of hands-on experience with Gatling or Gatling Cloud
• Strong knowledge of HTTP, REST APIs, WebSockets, and asynchronous event-driven systems
• Experience testing in microservices architectures (e.g., Kubernetes, Docker, Istio)
• Proficiency in Scala or willingness to learn for custom Gatling scripting
• Familiarity with CI/CD workflows and integrating performance tests in pipelines
• Strong skills in analysing JVM-level metrics, logs, and APM tools (e.g., Datadog, New Relic)
• Experience with cloud platforms (AWS, GCP, or Azure)
• Solid understanding of load patterns, ramp-up strategies, and test environments
• Excellent problem-solving, communication, and collaboration skills

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy radical flexibility – work remotely or from an office, your choice
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.
As one of Ukraine’s largest IT companies and a top employer recognized by Forbes, we’ve spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing their unique skills and perspectives they bring to shaping the future.

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Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.