Worked on the ulta-plus/public repository to deliver a build and test configuration enhancement focused on improving local build testing. Updated the test-local.json configuration file to closely mirror production build steps, enabling developers to validate builds locally with greater accuracy. This approach reduced environment drift and allowed earlier detection of build issues before continuous integration runs. Leveraging skills in configuration management and testing, the work emphasized maintainability by providing a clearly documented, single-source commit for future reference. The use of JSON for configuration ensured consistency across environments, ultimately supporting a faster, safer development feedback loop and more reliable release processes.