Worked on the microsoft/libHttpClient repository to enhance stability and maintainability by addressing thread-safety in tracing logic and preparing the codebase for static analysis. Focused on resolving race conditions by making client callbacks atomic and ensuring thread-safe registration and unregistration, which improved reliability across compilers. Leveraged C++ and C to align atomic usage in trace modules and introduced SAL annotations to support static analysis tooling. Improved code readability and maintainability by refining error logging macros and comments. Demonstrated strengths in concurrency, debugging, and code annotation, ultimately reducing the future defect surface and supporting long-term development velocity for system programming projects.