> Markdown version of [/jobs/ext/3309985-white-box-tester](https://www.wearedevelopers.com/jobs/ext/3309985-white-box-tester). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # White Box Tester - **Company:** Sim Infotech, Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Automation of Tests, Unit Testing, C Sharp (Programming Language), Code Coverage, Databases, Continuous Integration, Software Debugging, White-Box Testing, Junit, Python (Programming Language), Nunit, Selenium, Testng, Cypress (Programming Language), Backend, Git, Api Management - **Published:** September 23, 2026 - **Apply:** https://www.dice.com/job-detail/4280021d-8cbf-49b1-a13d-14557cc3da6a ## About the Role Required Skills: Strong experience in white box testing methodologies Proficiency in programming languages such as Java, C#, or Python Experience with unit testing frameworks (JUnit, NUnit, TestNG, etc.) Hands-on experience in API testing and backend validation Familiarity with CI/CD pipelines, Git, and Agile/Scrum environments Strong debugging and problem-solving skills Preferred Skills: Experience with test automation tools (Selenium, Cypress, etc.) Knowledge of performance and security testing Experience working with government or DMV projects If you are interested, please share your updated resume along with the following details: Full Legal Name ## Description Collaborate with developers to understand code logic and ensure test coverage Develop and execute automated test scripts Identify defects early in the development lifecycle and support root cause analysis Validate APIs, backend services, and database interactions Ensure adherence to quality standards, security, and performance benchmarks