Hery Heming contributed to the percona/percona-backup-mongodb repository by developing a new List function for the OSS storage driver, enabling scalable object listing with prefix-based scanning, suffix filtering, pagination, and file-only results. This feature streamlined backup workflows by efficiently returning relevant file information while excluding directories. Hery also enhanced OSS client initialization by introducing strict configuration validation and a default retry mechanism, which improved reliability when no retry policy was specified. The work demonstrated depth in backend development and cloud storage integration, leveraging Go to address operational efficiency and resilience in production environments through robust, maintainable engineering solutions.