Angelo Rosa developed a CI/CD build caching solution for the shadPS4 repository, focusing on optimizing pipeline efficiency by reducing redundant apt package installations. Leveraging GitHub Actions and YAML, Angelo integrated the awalsh128/cache-apt-pkgs-action to enable cross-job caching of development dependencies such as clang-format-18. This approach allowed the reuse of installed packages across multiple CI jobs, resulting in faster pull request validation and shorter nightly build times. By automating package management within the build process, Angelo improved resource utilization and consistency in the CI environment. The work demonstrated a solid grasp of build automation and workflow optimization techniques.