Senior Database Administrator at Verizon Wireless Inc (2015-10 – 2025-12)
Cost Savings, SLAs and Performance, Client satisfaction, Tech Solutioning & Support
- Executed end-to-end installation, configuration, and zero-downtime upgrades of Oracle RAC and standalone databases on Linux (12c→19c), including proactive application of 19c RU patches for enhanced security and database stability.
- Optimized ASM disk groups by adding/removing disks and rebalancing workloads, improving I/O performance and ensuring high availability for critical database systems.
- Implemented and optimized RMAN with recovery catalog and retention policies, enhanced performance by 30–45% using Block Change Tracking (BCT) and parallelized channels, and ensured recoverability through scheduled BACKUP and RESTORE VALIDATE operations.
- Performed Performance Tuning tasks using tools like AWR, ADDM, and ASH diagnostics for root-cause analysis of database and application performance issues, tuning SQL execution plans via Explain Plan, SQL Profiles, tkpprof and SQL Plan Baselines.
- Implemented, maintained, and troubleshot Oracle Data Guard replication to ensure high availability and robust disaster recovery, executing seamless switchovers and failovers during planned maintenance and Bi-annual DR drills.
- Upgraded Oracle GoldenGate (12c–19c) on Linux/Unix for real-time replication and automated gg monitoring with shell/Ansible scripts.
- Configured and managed Extract, Data Pump, and Replicat processes for high-volume transactional databases, maintaining seconds latency for critical business operations.
- Implemented Conflict Detection and Resolution (CDR) in bi-directional setups to automate data reconciliation.
- Tuned integrated capture and delivery settings (e.g., parallelism, batch processing) to handle peak transaction volumes without impacting source system performance.
- Provisioned core AWS services (EC2, S3, IAM) using least-privilege security policies.
- Deployed high-availability databases (RDS, Aurora) within secure, private VPC subnets.
- Optimized performance via CloudWatch and Performance Insights to reduce query latency.
- Handled critical production issues for Oracle, Couchbase, MariaDB, and MS SQL Server, collaborating with support and application teams; acted as solution architect for new requirements, infrastructure design, and capacity planning, while preparing and executing MOPs for maintenance, crash testing, and point-in-time recovery.
- Upgraded MS SQL Server-2008 to MS SQL Server-2016.
- Configuring and Monitoring SSIS jobs and setup alerts if threshold exceeded SLA limit.
- Implementation and monitoring of backup to NetBackup.
- Troubleshooting performance issues for long running queries and various others database performance.
Assistant Vice President - Database Services at Citigroup (2015-01 – 2015-10)
Cost Savings, SLAs and Performance, Client satisfaction, Tech Solutioning & Support
- Managed and supported multiple critical databases with 24x7 operations and minimal downtime, coordinating onsite and offshore teams to ensure uninterrupted global fund transfers across NAM, EMEA, and ASIA.
- Acted as solution architect for new and ongoing requirements, driving infrastructure design, capacity planning, and scalability for new and existing databases.
- Designed and standardized business continuity with Oracle Data Guard (physical and logical standby) for Citi's mission-critical systems.
- Implemented Flashback for rapid recovery, and developed/documented procedures for periodic database switchovers, crash testing, and point-in-time recovery exercises.
- Defined and enforced database encryption standards for Oracle (TISO compliance), while optimizing access controls, release deployments, and activity audits.
Assistant Vice President - Database Services at Citigroup (2012-09 – 2013-03)
Sr. Database Administrator at National Systems Consulting, L.P. (2013-04 – 2014-12)
Customer: Bank of America, Addison TX
- Coordinated and executed Proof of Concept for Bank of America on Exadata Half Rack in collaboration with Oracle team.
- Configured ASM disk groups and managed ASM storage to optimize database performance.
- Performed RDBMS database cloning, patching (CPU/PSU), and maintenance tasks.
- Restored and recovered databases as needed, ensuring minimal downtime and service continuity for clients.
Sr. Database Administrator at AMDOCS INC (2011-03 – 2012-09)
Customer: AT&T
Database Administrator at AMDOCS INC (2002-01 – 2010-02)
Customer: Sprint/Cingular/Metro PC
- Installed and configured Oracle Servers (9i, 10g, 11g) on AIX, SUN, HP, and Linux platforms.
- Deployed Oracle Client software and created customer-specific databases tailored to business requirements.
- Managed RMAN backups and recovery to ensure data integrity, availability, and disaster recovery.
