
Subhan Ahmad
IT Professional
Skills

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Werkervaring
Database Administrator
PTCL • Fulltime
Nov 2025 - Present • 11 mos
Key Responsibilities & Achievements: - Administered and maintained MySQL databases in production environments. - Worked with MySQL InnoDB Cluster and Group Replication for high availability. - Configured and managed MySQL Router for application connectivity and read/write routing. - Performed database health checks, troubleshooting, monitoring and routine maintenance. - Worked with MySQL Enterprise Backup (MEB) for full and incremental backup operations. - Supported backup retention and recovery-related activities. - Managed asynchronous replication and disaster recovery environments. - Participated in MySQL version upgrades and upgrade validation/testing. - Worked on MySQL configuration and performance-related parameters through my.cnf. - Managed database users, privileges, grants, and access requirements. - Investigated database activity, connections, running queries, and transactional issues. - Worked on database monitoring using Prometheus and Grafana, including MySQL and system-level metrics. - Supported database storage management, including partition-related maintenance and data archiving activities. - Worked on planning and testing MySQL InnoDB ClusterSet architecture for disaster recovery and site-level resilience. - Assisted with production database operational activities while focusing on availability, reliability, and minimizing service disruption. Key Areas of Expertise: - MySQL: Administration, InnoDB, InnoDB Cluster, Group Replication, MySQL Router, Replication, Backup & Recovery, Performance Monitoring, User & Privilege Management, Upgrades, DR and Archiving. - Other Databases: Microsoft SQL Server and PostgreSQL — working-level administration and troubleshooting.