Tison Thomas

Environment: Oracle 19c, PostgreSQL, AWS RDS, EC2, Linux

• Provided L3 database and cloud support for large-scale health care systems at Kenvue (Johnson & Johnson).
• Key Member in Oracle to AWS RDS PostgreSQL migration initiatives, ensuring minimal downtime and seamless data transition.
• Performed database patching, backup validation, and disaster recovery readiness testing for mission-critical systems.
• Monitored database performance and optimized configurations using AWS monitoring tools and performance tuning techniques.
Maintainedined high availability production environments ensuring reliability and regulatory compliance.

Environment: Oracle Autonomous Database, Oracle Cloud Infrastructure, PostgreSQL, Azure Container Apps

• Key contributor to a large-scale cloud migration project moving DHL enterprise databases from on-premise infrastructure to the cloud.
• Administered Oracle Autonomous Database environments ensuring availability, scalability, and performance.
• Optimized database objects including functions, views, and external tables to support cloud migration compatibility
• Collaborated closely with development teams to resolve performance bottlenecks and optimize SQL queries.
• Supported ETL and data engineering workflows enabling reliable enterprise data pipelines.

Environment : PostgreSQL, AWS RDS, Amazon Aurora, Linux, AWS CloudWatch

• Managed AWS RDS PostgreSQL and Amazon Aurora database environments for telecom and engineering clients including Jacobs Engineering and Fulton Hogan.
• Configured database replication, backup automation, and monitoring using AWS CloudWatch.
• Automated PostgreSQL backups using cron jobs reduce manual effort and improve recovery processes.
• Configured and maintained standby databases for high availability and disaster recovery.
• Proactively monitored disk space, tablespaces, and system health to prevent outages.
• Developed and maintained database security protocols for user access.
• Collaborated with development teams to support application integration.
• Monitored database performance and optimized queries for efficiency.

Environment: Oracle 12c/19c, Linux, RMAN, AWR, ASH

• Administered enterprise Oracle database environments supporting high-volume client applications
• Executed Oracle database upgrades from 12c to 19c, ensuring compatibility and minimal downtime.
• Implemented RMAN backup and recovery strategies to safeguard critical enterprise data.
• Mentored junior staff on best practices in database management.
• Performed database performance tuning using AWR and ASH reports.
• Performed quarterly patching and performance tuning to maintain optimal system performance.

Environment : Oracle RAC 10g/11g, WebLogic Server, Oracle Application Server

• Supported Oracle RAC database environments for enterprise insurance systems.
• Managed database creation, refreshes, and maintenance across development, testing, and UAT environments.
• Assisted in application server migration from Oracle Application Server to WebLogic.
• Weblogic server monitoring and administration.
• Performed UAT and pre-production environment refreshes on database and weblogic application server, ensuring accurate testing environment.
• Worked closely with development teams on performance and deployment issues, enhancing application reliability.