During January 2025, Atetubou focused on stabilizing build systems for the Shopify/grpc repository, addressing a core compatibility issue in C++ environments. He delivered a targeted fix to ref_counted_ptr.h, replacing stddef.h with cstddef to ensure std::nullptr_t compatibility when using libc++ modules in Chromium builds. This C++ header adjustment reduced build errors and improved cross-module portability, directly impacting CI reliability. Although no new features were shipped, Atetubou’s work in C++ and build systems laid essential groundwork for future development, enabling safer and faster feature delivery by resolving a root-cause issue that previously hindered multi-platform support.