Worked on enhancing time-series data lifecycle management in the percona/percona-server-mongodb repository by reverting a constraint that previously prevented deletes on time-series collections if such operations would alter the owning shard of a bucket. This change restored operational flexibility for administrators managing time-series data, allowing for more effective data cleanup and retention strategies. The approach required careful consideration of shard key integrity, as the trade-off introduced potential impacts during delete operations. The work was implemented using C++ and JavaScript, leveraging expertise in MongoDB, database management, and sharding to ensure traceability and maintainability through direct linkage to tracked issues and commits.