Worked on PeerDB-io/peerdb to enhance MongoDB compatibility by updating the validation configuration, lowering the minimum supported MongoDB version from 5.1.0 to 4.4.0. This backend development effort, implemented in Go, focused on database configuration to allow customers with older MongoDB 4.4 instances to use PeerDB without requiring a database upgrade. The change clarified validation rules to ensure backward compatibility and broadened the range of supported deployments. No major bugs were reported during this period, and the feature was delivered as production-ready, supporting the project’s roadmap for expanded compatibility and a smoother developer experience across diverse environments.