Worked on the dart-lang/sdk repository to optimize the Dart VM by implementing lazy initialization for kernel loader show and hide lists, ensuring these lists are only allocated when required and reducing unnecessary memory usage. Addressed documentation issues in the flutter/flutter repository by updating broken CI builder links, improving access to current resources and supporting better developer onboarding. Applied expertise in C++, CI/CD, and compiler internals to deliver targeted performance improvements and documentation hygiene. The work emphasized minimal, clear code changes and cross-repository collaboration, laying the foundation for further VM optimizations and more reliable, maintainable CI documentation practices.