Designs and executes automated non-functional tests covering load, stress, scalability, endurance, failover, and resilience. Simulates enterprise workloads, identifies bottlenecks across application and infrastructure layers, analyzes system metrics, and produces performance reports with risks and recommendations. Collaborates with development, QA, DevSecOps, product, and infrastructure teams to define acceptance criteria and integrate performance testing into CI/CD or scheduled pipelines.
N-iX is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world.
We are looking for a Non-Functional Test Engineer who can design, implement, and maintain automated tests that evaluate the performance, stability, scalability, and resilience.
The role will focus on reproducing realistic enterprise workloads and failure conditions to identify bottlenecks and reliability issues before they reach customers. The engineer will work closely with development, QA, platform, and DevSecOps teams to define measurable performance expectations and integrate non-functional testing into our release process.
Key Responsibilities:
- Design, develop, and execute non-functional test scenarios covering load, stress, scalability, endurance, failover, and resilience testing.
- Simulate real-world user traffic and peak load conditions to validate system performance.
- Identify performance bottlenecks across application, database, API,infrastructure, and network layers.
- Work closely with developers, DevSecOps, QA, product, and infrastructure teams to define test objectives and acceptance criteria.
- Prepare detailed test reports including observations, bottlenecks, metrics, risks, and recommendations.
- Support performance testing as part of CI/CD pipelines where applicable.
Skills required:
- Strong experience with performance and load testing, preferably using tools such as k6, Gatling, JMeter, Locust, or similar.
- Experience designing load, stress, scalability, endurance and resilience tests.
- Good understanding of HTTP APIs, distributed systems, concurrency, queues and asynchronous processing.
- Experience with Kubernetes / containerized environments.
- Ability to analyse CPU, memory, JVM heap, disk, network and application metrics.
- Experience with observability tools such as Prometheus, Grafana, OpenTelemetry or similar.
- Experience integrating non-functional tests into CI/CD or scheduled test pipelines.
- Scripting/programming skills in a language suitable for test automation.
- Ability to work with developers to reproduce production/customer performance problems and turn them into automated regression scenarios.
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
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