Hery Heming developed and enhanced cloud storage integration for the percona/percona-backup-mongodb repository, focusing on backend development using Go. He implemented a new List function for the OSS storage driver, enabling scalable object listing with prefix-based scanning, suffix filtering, pagination, and file-only results, which streamlined backup workflows by excluding directories. Additionally, Hery improved OSS client initialization by introducing robust configuration validation and a default retry mechanism, ensuring reliable operation even when no retry policy was specified. His work addressed both feature development and reliability, demonstrating depth in cloud storage integration and backend engineering within a short, focused development period.