Developed and delivered a platform test filter for tester environments in the ni/semi-test-library-dotnet repository, focusing on targeted test execution and improved environment categorization. The solution involved applying the new filter to existing automated tests, which tightened the test scope for tester-only environments and reduced unnecessary test runs. This approach enhanced the reliability and efficiency of the test suite by enabling more precise management of test execution across different deployment scenarios. The work demonstrated proficiency in C#, software development, and test automation, with an emphasis on environment tagging and unit testing to better align testing processes with business objectives.