Non Functional Tester
The Non-Functional Tester is responsible for validating the performance, scalability, reliability, and accessibility of enterprise applications. The role designs and executes non-functional test strategies, analyses results, and partners with engineering and business stakeholders to ensure systems meet defined non-functional requirements (NFRs).
Key Responsibilities
- Understand Non-Functional Requirements (NFRs) and scope from client documentation
- Develop and maintain non-functional test strategies and plans aligned with business and technical objectives
- Design and execute performance tests using tools such as JMeter, Azure Load test to evaluate system scalability and reliability, reporting using Blaze meter
- Perform accessibility testing using Wave, Axe to ensure compliance with WCAG and other accessibility guidelines
- Analyse test results to identify trends, patterns, and areas for improvement in system performance
- Prepare detailed test reports, including metrics such as response times, throughput, and defect summaries
- Collaborate with developers, architects, and business analysts to resolve non-functional issues and optimize system performance
- Conduct load, stress, soak, and spike testing to validate system behaviour under varying conditions
- Integrate non-functional tests into CI/CD pipelines to enable continuous performance validation
- Define non-functional acceptance criteria and service-level objectives (SLOs) in collaboration with stakeholders
Required Skills
- Should have experience in non-functional / performance testing of enterprise web and API-based applications
- Hands-on expertise with performance testing tools such as Apache JMeter and Azure Load Testing, with result analysis and reporting in BlazeMeter
- Experience with accessibility testing tools such as WAVE and Axe, and a working knowledge of WCAG 2.1/2.2 compliance standards
- Strong understanding of non-functional requirements including performance, scalability, reliability, availability, and security
- Ability to analyse performance metrics (response time, throughput, latency, resource utilisation) and identify bottlenecks
- Familiarity with APM and monitoring tools (e.g., Dynatrace, AppDynamics, Grafana) for system observability
- Experience integrating performance tests into CI/CD pipelines (e.g., Azure DevOps, Jenkins, GitLab).
- Working knowledge of cloud platforms (Azure / AWS) and containerised environment