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
Skills Required
- Strong experience with performance and load testing
- Experience with performance testing tools such as k6, Gatling, JMeter, Locust, or similar
- Experience designing load, stress, scalability, endurance, and resilience tests
- Understanding of HTTP APIs, distributed systems, concurrency, queues, and asynchronous processing
- Experience with Kubernetes and containerized environments
- Ability to analyze 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 or programming skills in a language suitable for test automation
- Ability to reproduce production or customer performance problems and turn them into automated regression scenarios
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
