Cognizant
Automated Test Developer / SDET
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Automated Test Developer / SDET
We are looking for an experienced Automated Test Developer / SDET to join the QA team.
The successful candidate will maintain and extend an enterprise-grade .NET test automation framework built on Reqnroll (BDD) and Microsoft Playwright on .NET 8. The cross-functional delivery team develops a Microsoft Dynamics 365 application for council tax property assessment.
Responsibilities
• Maintain and enhance the Reqnroll (SpecFlow) BDD automation framework in C# / .NET 8 using Microsoft Playwright • Write and review Gherkin feature files, step definitions, and Page Objects for new and changed functionality • Ensure automated tests are integrated into pull requests to support a shift-left testing model • Investigate and resolve test flakiness (replace sleeps with condition-based waits, standardise step definitions, eliminate duplicates) • Maintain and optimise the Azure DevOps CI/CD pipeline (test result publishing, environment switching, PR gate configuration) • Triage CI/CD failures, distinguishing between test failures vs infrastructure/environment issues • Collaborate with DevOps engineers to configure and manage the agent pool • Manage test data in Excel and databases, ensuring integrity and isolation across SIT, UAT, and FAT • Participate in sprint ceremonies, providing test estimates, risk assessments, and contributing to Definition of Done • Mentor junior QA team members on BDD (Gherkin and SpecFlow), Playwright, and POM best practices • Drive improvements in Ways of Working, including PR gating criteria and test pipeline integration
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Technical Skills - Essential
Test Automation
• C# (.NET 8) – Strong experience in OOP, generics, async/await, LINQ • Microsoft Playwright – Advanced usage including:
- Locators, auto-wait, trace viewer
- Assertion (
Expect) and async/await patterns • Reqnroll / SpecFlow – Proficiency in writing Gherkin scenarios, hooks, and maintaining BDD frameworks • Gherkin / BDD – Ability to author clear, structured scenarios (correct use ofGiven/When/Then,Background:,Scenario Outline) • NUnit or xUnit – Test framework experience in .NET • Page Object Model (POM) – Strong implementation (separation of locators and functions, reusable components)
CI/CD & DevOps
• Azure DevOps – YAML pipeline configuration (VSTest, PublishTestResults, variable groups, agent pool setup)
• Git – Branch strategy, PR workflow, commit hygiene
• NuGet Package Management – Dependency resolution and version control
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Supporting Skills
• REST API Testing – Experience with RestSharp (cookie-based auth, GET/POST/PUT, response validation) • Excel Data Management – EPPlus or similar for parameterised test data • SQL / Database – Writing and validating queries for test data retrieval and assertion • Structured Logging – Serilog or similar for test context logging
Desirable Skills
• Microsoft Dynamics 365 Automation – Experience with CRM/D365 testing (iframe handling, BPF stages, lookup fields, command bar)
• Selenium WebDriver – Hands-on experience (useful for troubleshooting legacy flows)
• Azure AD / OAuth – Understanding of authentication (session tokens, re-authentication, service accounts)
• Accessibility Testing – Integration with tools like Axe (a11y tests)
• PostgreSQL / Npgsql – Database queries for Azure-hosted PostgreSQL
• PDF Evidence Generation – Tools like PdfSharp for screenshot trails
• AutoIt – Windows automation for file upload dialogs
• PowerShell – CI/CD scripting (Azure CLI, config file manipulation)
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