Aj Gajgaj focused on enhancing the developer onboarding experience for the DataDog/dd-trace-dotnet repository by building comprehensive MacOS build setup and troubleshooting documentation. Leveraging Markdown and documentation best practices, Aj clarified build steps, integrated Visual Studio Code as a supported development environment, and provided actionable troubleshooting guidance to address common macOS build errors. This work aimed to reduce setup friction and accelerate contributor ramp-up by making the build process more transparent and accessible. Although no bugs were fixed during this period, the depth of documentation improvements contributed to cross-platform build reliability and improved productivity for new and existing developers alike.