Worked on backend and developer tooling improvements across shykes/dagger and facebook/buck2 repositories, focusing on Python, Rust, and type systems. Modernized Python dependency management in dagger by migrating to dependency-groups.dev, eliminating deprecation warnings and improving IDE integration. Enhanced credential handling by removing intrusive prompts and providing early, clear errors for missing credentials, streamlining onboarding and reliability. In Buck2, delivered comprehensive documentation for the Starlark typing API, adding detailed docstrings and aligning with Python standards to improve API discoverability and maintainability. Demonstrated strengths in documentation, dependency management, and backend development, with a focus on reducing friction for both users and contributors.