Senior QA Engineer / SDET – C# Test Automation

About the role

Ascendum is looking for a Senior QA Engineer / SDET to lead test automation efforts for web and API applications in a Microsoft/.NET environment. The role will design, build and maintain robust automation frameworks that integrate with Azure DevOps CI/CD pipelines.

Key responsibilities

• Develop and maintain UI automation using C# with Playwright for .NET or Selenium.
• Create BDD‑style test suites using ReqNRoll (or SpecFlow) and integrate them into the development workflow.
• Implement API tests in C# using RestSharp or similar libraries.
• Configure and manage Allure reporting within Azure DevOps pipelines.
• Ensure test suite stability by writing flake‑resistant, maintainable code.
• Validate functionality of ASP.NET MVC/Web API back‑ends, Angular front‑ends, and background services such as Hangfire and Windows Services.
• Collaborate with development and DevOps teams to embed quality throughout the SDLC.
• Maintain automation code in source control following engineering best practices.

Required profile

• Strong proficiency in C# and the .NET ecosystem.
• Hands‑on experience with Playwright for .NET or Selenium for UI automation.
• Experience building BDD frameworks (ReqNRoll preferred, SpecFlow acceptable).
• Proven track record of API test automation using C# libraries.
• Familiarity with Azure DevOps Pipelines, Test Plans, and work‑item tracking.
• Ability to design maintainable, reliable automated tests for complex applications.

Required skills

• C#
• .NET
• Playwright for .NET
• Selenium
• ReqNRoll
• SpecFlow
• RestSharp
• Azure DevOps Pipelines
• Azure DevOps Test Plans
• Allure reporting
• Angular
• ASP.NET MVC
• Web API
• Hangfire
• Windows Services