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 the awalsh128/cache-apt-pkgs-action, Angelo automated the caching of development dependencies such as clang-format-18 across multiple jobs. This approach, implemented using Shell and YAML, enabled faster pull request validation and shorter nightly build times while conserving CI resources. The work demonstrated a solid understanding of build automation and package management, addressing a common bottleneck in continuous integration workflows and delivering a maintainable improvement to the repository’s development and testing processes.