Ahsan I.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Professional Database Administrator with extensive hands-on experience in PostgreSQL and Oracle environments — from initial setup to enterprise-grade high availability and disaster recovery. PostgreSQL: ========== Setup, configuration, and administration of PostgreSQL instances | Streaming & logical replication | High availability with Patroni, Pgpool-II, and Repmgr | Backup & recovery using pgBackRest, pg_dump/pg_restore, and Barman | Performance tuning with EXPLAIN ANALYZE and pg_stat views | Schema design & database modeling | Tools: pgAdmin, psql, pgBadger, pg_activity Oracle: ====== Single instance & RAC setup and administration | Oracle Data Guard (physical & logical standby) | ASM Filesystems & storage management | Backup & recovery using RMAN | Performance tuning with AWR, ADDM, and Execution Plans | Tools: OEM, SQL*Plus, SQL Developer Services: ======= - Database Setup & Configuration - Administration & Monitoring - Migrations (Oracle → PostgreSQL, version upgrades, cross-platform) - High Availability & Disaster Recovery - Database Modeling & Schema Design - Performance Tuning & Query Optimization - Security, User Management & Auditing - General DBA Consulting