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 environments.
About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
