Worked on the opensearch-project/k-NN repository to improve the developer onboarding experience by enhancing documentation for macOS setup. Focused on creating a detailed Mac CMake Installation Guide, the work provided step-by-step instructions for installing CMake using pip3 and updating the PATH variable for Python 3.9, addressing common setup issues for new contributors. Leveraged skills in CMake, Python, and Markdown to ensure the documentation was clear, actionable, and easy to follow. The contribution aimed to reduce friction during initial setup, improve cross-platform reliability, and decrease support overhead, with all changes documented and signed off according to project contribution standards.