During April 2026, contributed to the moby/buildkit repository by developing and delivering a new S3 Accept-Encoding configuration flag, aimed at improving cache reliability and cross-cloud interoperability. This feature allows users to control Accept-Encoding behavior in S3 requests, addressing integration issues with S3-compatible backends such as Google Cloud Storage. The work involved backend development using Go, with a focus on API integration and leveraging the AWS SDK to ensure compatibility and maintainability. The change was implemented as a minimal, well-governed update, with careful attention to code quality, traceability, and rollback support through a signed-off commit process.