C# API Automation & Manual QA Engineer
First seen by Alion on Jul 16, 2026. Querentia scores C on the Alion truth index.
Job Summary
We are seeking a Mid-Senior Automation & Manual QA Engineer with a strong blend of C# API automation and manual testing experience. The ideal candidate will own end-to-end testing, develop robust automation frameworks, and collaborate closely with development teams in an Agile environment.
Key Responsibilities
Design, develop, and maintain C# API automation test suites.
Perform backend API testing, including REST API validation and integration testing.
Execute manual testing, including functional, regression, and defect validation.
Create and maintain test cases, test plans, and automation frameworks.
Collaborate with developers and business teams to ensure high-quality software delivery.
Participate in Agile ceremonies and support continuous testing practices.
Required Skills & Experience
Extensive hands-on experience with C# API test automation ( mandatory ).
Strong experience with REST API testing using C# .
Hands-on experience with Postman and API automation frameworks.
Solid QA fundamentals, including test case design, regression testing, and defect management.
Experience with NUnit, xUnit, MSTest , or similar .NET automation frameworks.
Experience working in Agile/Scrum environments.
Azure or other cloud platform experience is preferred.
Strong analytical, troubleshooting, and communication skills.