Worked on cross-repository versioning standardization for facebook/pyrefly and facebook/pyre-check, focusing on removing all references to 3.10.cinder to unify versioning schemes. This involved updating Python tools, Rust components, and BUCK build configurations, as well as cleaning up dependencies and test fixtures to reflect the new approach. The changes aimed to streamline upgrades, reduce code drift, and improve build and test reliability. Collaborated closely with peers through code reviews and attached thorough documentation to the updates. Demonstrated backend development, testing, and version control skills while ensuring consistency and maintainability across both repositories using Python and Rust.