SDET .NET Developer

Job Title : SDET .NET Developer

Location : Austin, TX

Job Summary

We are seeking an experienced SDET .NET Developer with strong expertise in software test automation, C#, and .NET technologies. The ideal candidate will be responsible for designing, developing, and maintaining automated testing frameworks for UI and API-based applications.

The candidate should have strong hands-on experience with Selenium/Playwright, API automation, SQL, test frameworks, Git, and CI/CD pipelines and should be comfortable working in an Agile development environment.

Key Responsibilities

Design, develop, and maintain robust test automation frameworks using C# and .NET.

Develop automated UI tests using Selenium WebDriver, Playwright , or similar tools.

Develop and execute automated API tests using RestSharp, Postman, Swagger/OpenAPI , or similar tools.

Create automated tests for functional, regression, integration, and end-to-end scenarios.

Validate REST APIs, JSON/XML payloads, methods, response codes, and business logic.

Write and execute SQL queries for backend data validation.

Integrate automated test suites into CI/CD pipelines .

Work with Azure DevOps, Jenkins, GitHub Actions, or similar CI/CD platforms.

Analyze test failures, troubleshoot defects, and collaborate with developers to resolve issues.

Maintain test scripts, frameworks, test data, and automation documentation.

Participate in Agile ceremonies including sprint planning, daily stand-ups, retrospectives, and defect triage.

Required Technical Skills

Experience in SDET, QA Automation, or Test Automation.

Strong hands-on experience with C# and .NET / .NET Core .

Strong experience with Selenium WebDriver and/or Playwright .

Hands-on experience with API automation testing .

Experience with RestSharp, Postman, Swagger/OpenAPI , or equivalent tools.

Experience with NUnit, MSTest, or xUnit .

Strong understanding of RESTful APIs, JSON, XML, and web services .