Worked on Esri/harfbuzz and w3c/csswg-drafts, focusing on code safety, documentation accuracy, and low-level programming. Addressed a critical issue in COLR format handling by adding explicit return statements in C++ switch-case blocks, preventing unintended fallthrough and improving color font rendering reliability. Enhanced memory management by fixing undefined behavior in shrink_vector, ensuring safe destruction of elements when handling empty vectors. Updated CSS documentation to accurately reflect supported properties, reducing developer confusion. Emphasized maintainability and runtime safety across repositories, applying technical writing and C++ expertise to clarify code paths and align documentation with actual implementation and grammar standards.