Senior Non-Functional Tester

7N is a company with 30 years of experience creating IT solutions for over 200 organizations. They focus on providing stable and rewarding collaborations for IT experts, supported by dedicated agents who ensure professional comfort and continuous development initiatives.

Must have:

• 7+ years of professional experience in software testing, quality engineering, or related technical roles with a strong focus on non-functional testing.
• Ability to write production-quality code using an object-oriented language, ideally Java or another JVM-based technology.
• Solid hands-on experience with containerized and cloud-native environments, including Kubernetes and OpenShift.
• Proven expertise in defining, owning, and executing non-functional testing strategies including planning, coordination, and reporting.
• Strong background in automated testing, particularly performance, resilience, and stability.
• Experience delivering non-functional test types such as load, stress, endurance, soak, resilience, and chaos testing.
• Good understanding of software architecture, distributed systems, and modern infrastructure components.
• Practical experience with at least one performance or test automation framework, e.g., JMeter, Gatling, or Spock.
• Comfortable working with version control systems, preferably Git.
• Experience executing non-HTTP or non-API performance tests such as file-based or protocol-level testing.
• Hands-on knowledge of monitoring and observability solutions including Grafana and Prometheus.
• Ability to design and build custom testing tools or utilities when standard solutions are insufficient.
• Fluent spoken and written English.

Nice to have:

• Previous hands-on experience as a Software Developer or DevOps Engineer.
• Experience with scripting languages such as Groovy or Linux shell.
• Knowledge of CI/CD pipelines and build tooling including Jenkins and Maven, and configuration/deployment tools like Kustomize or Helm.
• Experience testing microservice-based and distributed architectures.
• Exposure to complex enterprise environments involving container platforms, relational and NoSQL databases, messaging systems, in-memory data grids, or hardware security modules.
• Ability to analyze and troubleshoot JVM memory issues including heap dumps, profiling, and performance tuning.
• Understanding of database performance concepts including execution plans and query optimization.
• Knowledge of networking fundamentals and communication protocols such as SSL/TLS, HTTPS, TCP/IP, and gRPC.

• Define, own, and continuously improve end-to-end non-functional testing strategies covering performance, scalability, reliability, and resilience.
• Design, develop, and maintain automated test scenarios, scripts, and traffic simulations reflecting real-world usage patterns.
• Execute non-functional test suites and ensure test environments are correctly prepared, stable, and representative of production.
• Analyse and interpret test results, identify bottlenecks, risks, and improvement areas, and translate findings into clear action items.
• Prepare clear and structured reports presenting metrics, conclusions, and practical recommendations to technical and non-technical stakeholders.
• Work closely with development teams, DevOps engineers, and architects to align performance expectations, technical constraints, and quality goals across the delivery lifecycle.