Vebruni focused on improving build reliability and integration across the Trilinos and Spack repositories, addressing complex issues in C++ and Python environments. In trilinos/Trilinos, Vebruni resolved a macro conflict between Amesos2 and SuperLU by carefully managing preprocessor definitions, which stabilized cross-library builds and improved downstream integration. For spack/spack and spack/spack-packages, Vebruni enhanced CI workflows by correcting Ninja build artifact detection and ensuring accurate git sparse path handling, adding validation tests to support various versioning schemes. These contributions demonstrated a strong command of build systems, CMake, and package management, delivering robust, maintainable solutions to nuanced engineering challenges.