Role & seniority: Senior Performance QA Engineer, full-time in Ukraine (remote or office per preference)

Stack/tools: Gatling/Gatling Cloud (Scala-based scripting), HTTP/REST/WebSockets, microservices (Kubernetes, Docker, Istio), CI/CD (GitLab, GitHub Actions), JVM metrics/APM (Datadog, New Relic), observability (Grafana, Prometheus, InfluxDB); cloud platforms (AWS, GCP, or Azure)

Top 3 responsibilities

Design, implement, and execute performance test plans and scenarios; develop custom Gatling scripts
Analyze performance, identify bottlenecks, and define SLAs, benchmarks, and KPIs; integrate tests into CI/CD
Collaborate with dev/SRE/QA, monitor metrics, participate in incident analysis, and drive performance improvements

Must-have skills

2+ years hands-on Gatling or Gatling Cloud experience
Strong HTTP/REST/WebSockets knowledge; microservices testing experience
Scala proficiency or willingness to learn for Gatling scripting
CI/CD workflow experience; JVM metrics/logs/APM familiarity
Cloud platform experience (AWS/GCP/Azure)

Nice-to-haves

Experience with Grafana/Prometheus/InfluxDB or similar observability stacks
Knowledge of load patterns, ramp-up strategies, test environments
Strong problem-solving and communication skills; cross-team collaboration
Location & work type: Ukraine-based; full-time role with flexible work arrangement (remote or office)

Full Description

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

Senior Performance QA Engineer