Senior Lead Database Administrator with responsibility for 130 databases, primarily Oracle 19c and some PostgreSQL. Team Lead and mentor for a high functioning team supporting 1200+ databases on multiple platforms.- Provided 24x7x365 System/operational DBA support for AT&T contracted Oracle, DB2, PostgreSQL databases requiring quick analysis, troubleshooting , identifying solutions, and communicating with leadership, clients, ADBAs, and developers. - Team Leader for a globally distributed team of 23 individuals. - Upgraded Oracle databases from Oracle 12c to 19c.- Applied quarterly Oracle database patches.-Mentored team members with technical advice and assistance as well as wrote and maintained internal WIKI documentation.- Ensured databases followed AT&T security guidelines and participated in audits.- Followed AT&T change management and trouble engagement protocols.- Monitored regularly scheduled backups and resolved issues.- Proactively monitored database performance, space utilization, and availability.- Supported application modernization and capital cost reduction efforts by completing migration of on-prem databases to cloud-based databases on Microsoft Azure.- Participated in annual disaster recovery exercises.- Provided basic support for Oracle LDAP/OUD.

Senior Database Administrator providing 24x7x365 System/operational DBA support for AT&T contracted Oracle, DB2, PostgreSQL, MySql, Mariadb databases through multi-team on-call rotation. - Acted as primary operational DBA for 60 databases which includes responsibility for coordinating patching and upgrades, general troubleshooting, performing backups, and providing support during application maintenance.- Performed timely Oracle DB PSU patching - Troubleshooted database errors, performance issues, and provide general database support to application DBAs.- Built 4 node Oracle RAC cluster with DataGuard standby to support OEM grid repository.- Participated in disaster recovery exercises including DataGuard switchover testing using DataGuard Broker or performing manual switchover.- Ensured databases follow AT&T security guidelines, participated in audits, and remediated any issues.- Followed AT&T change management and trouble engagement protocols.- Monitored regular backup and resolve issues.- Proactively monitored database performance, space utilization, and availability.

Team Lead for team of DBAs with 12 team members. Responsible for balancing work assignments, assisting with outages, and mentoring.- Managed one of the largest public Oracle RAC databases at the time: a 500TB database configured as a 6 node Oracle RAC cluster on Solaris. Coordinated the upgrade from 11.1 to 11.2.0.4 as well as the addition of 2 new nodes, and the configuration and testing of Time Keeper clone backup. - Provided 24x7x365 system/operational DBA support for Oracle databases.- Provided extensive administrative support for externally contracted DBAs including account maintenance, firewall requests, database design.- Manually installed Oracle 11g and built 120 databases with Dataguard standbys for GNO organization within AT&T.- Completed AT&T standard database design artifacts for hundreds of new databases with the DBA Services organization to ensure standards were met.- Implemented team on-call rotation by combining multiple smaller teams, defining parameters of on-call, defining procedures.- Helped develop enterprise GoldenGate implementation standards.- Participated in Zerto proof of concept testing.- Performed multiple database upgrades from Oracle 10 to 11g.