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Non-Functional Tester

Cognizant Technology Solutions Corporationlondon, england🇬🇧United Kingdom

Quick overview

SeniorityMid Senior
Work modeHybrid
Locationlondon, england, United Kingdom
GitOAuthSSOScrumJMeterPlaywrightPostmank6Generative AIRESTAzureAgileCI/CDAzure DevOpsRAG

Job description

Key Responsibilities



  • K6/Locust Performance Testing, Load/Stress Testing, Scalability Validation, Performance Analysis, and Azure Monitoring.

  • Azure AI Foundry Evaluation, Golden Dataset Validation, RAG Testing, Hallucination Detection, and AI Output Quality Assurance.

  • Azure AI Foundry Red Teaming, Prompt Injection Testing, Bias & Fairness Assessment, Toxicity Testing, and Responsible AI Validation.

  • Azure DevOps, CI/CD Automation, Accessibility Testing (WCAG 2.2 AA), Security Testing, and Test Reporting & Governance.


Required Skills & Experience



  • Strong hands‑on experience with Playwright automation.

  • Proven experience designing, enhancing, and maintaining scalable test automation frameworks.

  • Strong experience in UI, API, functional, regression, integration, and end-to-end automation testing.

  • Experience with REST API automation and tools such as Postman or equivalent.

  • Strong working knowledge of Azure DevOps , Git, CI/CD pipelines, automated test execution, and reporting.

  • Good understanding of automation design patterns, reusable components, test-data management, and reliable locator strategies.

  • Experience analysing test failures and debugging automation code and application issues.

  • Good understanding of Agile/Scrum delivery and quality engineering practices.

  • Strong analytical, problem-solving, communication, and stakeholder-management skills.

  • Experience with performance testing tools such as K6, Locust, JMeter, or Azure Load Testing .

  • Experience with AI/GenAI solution testing, including RAG evaluation, golden datasets, hallucination detection, prompt-injection testing, bias/fairness assessment, or responsible AI validation .

  • Knowledge of accessibility automation and WCAG standards.

  • Exposure to security testing and authentication mechanisms such as OAuth/OIDC/SSO.

  • Familiarity with AI-assisted engineering tools such as GitHub Copilot for accelerating test design and automation development.

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