Worked on the apache/kafka repository to enhance test infrastructure by centralizing the clearYammerMetrics cleanup process. This involved refactoring existing utilities in Java, moving the cleanup logic from ServerTestUtils to a shared TestUtils module. The approach improved code organization and ensured consistent metric cleanup across all tests, which increases reliability and reduces future maintenance overhead. By consolidating these testing utilities, the work addressed test fragility and streamlined the process for future development. The changes demonstrated a disciplined focus on maintainability and testing best practices, leveraging skills in code organization, refactoring, and test utility development to improve the overall test suite structure.