Worked on stabilizing the Percona Server MongoDB Operator by addressing a persistent reconciliation bug related to user roles. Focused on backend development using Go, the solution involved implementing an order-insensitive, semantic comparison for user roles, preventing unnecessary updates when roles were returned in different orders from MongoDB. This fix, contributed collaboratively within the percona/percona-server-mongodb-operator repository, broke an infinite reconciliation loop that previously caused excessive CPU usage and API server load. The approach aligned with existing operator patterns, improved maintainability, and reduced the risk of future regressions. Emphasized robust testing to ensure reliability and consistency across diverse deployment environments.