Worked on the apollographql/federation-rs repository to enhance the stability and compatibility of the federation stack by introducing precise dependency pinning and adapting to evolving API shapes. Focused on backend development using Rust, the work involved pinning Apollo Federation to version 2.14.0, which prevented breaking changes from automatic updates and reduced risk for downstream services. Updated the codebase to accommodate new API requirements by providing default options for composition functions, ensuring safer upgrades and ongoing maintenance. Emphasized robust dependency management and API design, resulting in a more resilient federation architecture and minimizing potential downtime during future dependency updates.