Over a two-month period, contributed to elastic/mcp-server-elasticsearch by modernizing package management, removing Yarn and its lockfile to streamline dependency handling and improve build reliability. This migration reduced maintenance overhead and clarified onboarding for new contributors, leveraging JavaScript and YAML for configuration and build tool updates. In nodejs/undici, introduced a maxOrigins option to the Agent constructor, enabling developers to cap concurrent origin connections and prevent resource overuse. The implementation preserved backward compatibility and added robust error handling through a custom MaxOriginsReachedError. Work demonstrated a focus on system design, API development, and practical improvements to project maintainability and performance.