In August 2025, Ai Zhou refactored the stuffer module within the aws/s2n-tls repository, focusing on standardizing function naming to enhance code readability and maintainability. Working in C, Ai Zhou applied software refactoring and maintenance skills to rename functions without altering their behavior, ensuring API compatibility while improving clarity for future contributors. This targeted change addressed long-term quality by reducing the risk of misnaming and streamlining code reviews. The refactor supports faster onboarding and iteration cycles, as new developers can more easily understand and navigate the codebase. The work demonstrated thoughtful attention to sustainable software engineering practices.