Contributed to code quality and reliability in both the apache/brpc and facebookresearch/faiss repositories over a two-month period. In brpc, focused on maintainability by refactoring the mvariable.cpp file, replacing tab characters with spaces to enforce consistent code formatting and streamline future code reviews. In faiss, addressed documentation reliability by fixing a broken reference in quantize_lut.cpp and improved the accuracy of search statistics in IndexIVFFastScan, ensuring that performance metrics correctly reflect underlying operations. Leveraged C++ expertise along with skills in debugging, documentation, and performance optimization to deliver targeted improvements that enhance developer experience and reduce maintenance overhead in these projects.