Nadav Rotem focused on stabilizing build systems for the facebook/fbthrift and facebook/CacheLib repositories by addressing issues in dependency detection and build reliability. He standardized the capitalization of the Zstd package in FindZstd.cmake, resolving CMake warnings and ensuring consistent library discovery for downstream consumers. His work involved precise, single-purpose commits that improved build configuration hygiene and reduced noise during the build process. Using CMake and build configuration expertise, Nadav enhanced cross-repository consistency and reliability, demonstrating a methodical approach to patching. The depth of his contributions lay in careful attention to detail and a clear focus on maintainable build system improvements.