Mohit Joshi enhanced test coverage and stability for PostgreSQL Transparent Data Encryption (TDE) features across the percona/pg_tde and percona/postgres repositories. He developed automated SQL tests to validate partitioned table encryption using pg_tde_is_encrypted(), refining access control scenarios to accurately reflect permission requirements for TDE operations. By addressing test alignment for non-superuser roles and fixing partitioned table behavior, Mohit reduced regression risk and improved validation depth. His work involved database testing, partitioning, and encryption, resulting in safer production deployments of TDE features. The technical approach emphasized automation, cross-repository consistency, and robust handling of security-critical database scenarios.