At a Glance
- Tasks: Validate performance and accessibility of enterprise applications through testing and analysis.
- Company: Join a forward-thinking tech company focused on quality and innovation.
- Benefits: Competitive salary, flexible working options, and opportunities for professional growth.
- Other info: Dynamic team environment with a focus on collaboration and continuous improvement.
- Why this job: Make a real impact by ensuring systems are fast, reliable, and accessible for everyone.
- Qualifications: Experience in non-functional testing and familiarity with performance tools like JMeter and Azure.
The predicted salary is between 40000 - 50000 £ per year.
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). Candidate should be eligible for SC clearance.
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 BlazeMeter.
- 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 environments.
Non-Functional Tester (Performance & Accessibility) in London employer: Cognizant
As a Non-Functional Tester at our company, you will thrive in a dynamic work culture that prioritises innovation and collaboration. We offer competitive benefits, including professional development opportunities and a commitment to diversity and inclusion, ensuring that every employee can grow and excel in their career. Located in a vibrant area, our office provides a stimulating environment where your contributions directly impact the performance and accessibility of enterprise applications, making your work both meaningful and rewarding.
