Worked on the CPython codebase, focusing on core runtime reliability and performance improvements. Addressed memory safety and stability in the generics path by fixing NULL dereference bugs and enhancing vectorcall support for GenericAlias and UnionType, reducing crash risks and memory leaks. Improved exception propagation in PyFrame_GetBack to ensure correct memory management during frame handling. Optimized I/O throughput by increasing the buffer size in asyncio’s sendfile fallback, benefiting large file transfers. Contributions spanned both C and Python, emphasizing asynchronous programming, error handling, and network programming. The work demonstrated careful attention to runtime robustness and maintainability in the python/cpython repository.