Hybrid .NET SDET: UI/API Automation Engineer

Compunnel, Inc.; Atlanta, Northern (GA, KY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Compunnel, Inc. seeks a results-driven Software Development Engineer in Test (SDET) in Atlanta, GA. You will balance manual testing with automation, focusing on UI, API, and integration testing for .NET applications, and expanding into Java-based testing as needed.

This hybrid role requires a proactive, ownership-minded professional. You will design and execute test cases, build automation frameworks, and validate functionality against requirements.

Qualifications

• 4+ years of experience in manual and automation testing.
• 3+ years testing applications built on .NET Framework and .NET Core.
• 1+ year of test automation using C# with NUnit, xUnit, Selenium, and Playwright.
• 2+ years API testing using REST/SOAP; familiarity with Postman and RestSharp.

Responsibilities

• Design, develop, and execute manual and automated test cases to ensure high-quality software delivery.
• Build and maintain scalable automation frameworks for UI, API, and integration testing.
• Validate application functionality against business and functional requirements.
• Collaborate with development, product, and QA teams to refine acceptance criteria and prevent defects early in the software lifecycle.
• Integrate automated tests into CI/CD pipelines to enable continuous testing and rapid feedback.
• Perform functional, regression, integration, and performance testing across multiple environments.
• Analyze test results, troubleshoot defects, and maintain appropriate documentation and traceability.
• Contribute to test planning, test data management, and release validation activities.
• Continuously improve testing strategies, tools, and processes to increase coverage and efficiency.

Skills

Manual testing

Automation testing

API testing

C# programming

Tools

NUnit

xUnit

Selenium

Playwright

Postman

RestSharp

Job description

Compunnel, Inc. seeks a results-driven Software Development Engineer in Test (SDET) in Atlanta, GA. You will balance manual testing with automation, focusing on UI, API, and integration testing for .NET applications, and expanding into Java-based testing as needed.

This hybrid role requires a proactive, ownership-minded professional. You will design and execute test cases, build automation frameworks, and validate functionality against requirements.