Worked on the redis/redis repository to enhance build stability and code maintainability by addressing a header file issue in C. Focused on code refactoring, the developer identified and removed a redundant declaration of the clusterNodeIsMaster function in cluster.h, which previously risked header re-declaration errors across different build configurations. This targeted bug fix did not alter runtime behavior but reduced potential compilation issues and streamlined future maintenance. The work demonstrated careful attention to code quality, with clear commit documentation and traceability. Leveraged C programming expertise to support a more robust codebase, emphasizing maintainability and reliability in collaborative open-source development.