Varun Raheja

About Varun Raheja

An accomplished IT professional who has 15+ years of professional experience in Database Administration across multiple technical platforms with a Masters degree in Computer Science, specializing research in RAID systems and data mining. • AWS Certified Solutions Architect, Microsoft certified Azure Solutions Architect, successfully completed various cloud migrations, implemented HA architecture in cloud, resulting in performance boost and enterprise cost reduction. • Lead projects/teams on several vendor-based products including evaluations and implementations.• Implemented SQL Server AAG architecture on premises and AAG RDS multi-AZ on AWS for HA. • Oracle Trained RAC DBA with over 10 years of experience as Oracle RAC Database Administrator in production, testing and development environment.• Experienced in creating and managing large RAC Databases on 8 and 16 node clusters.• Over 10 years of experience in managing SQL Server databases 2019, 2016 AAG, 2014, 2012, 2008 (cluster), 2005 and with Oracle to SQL server migration experience using SSMA.• Lead DBA in patching project to patch over 100 databases multiple times including rolling patches, PSUs, online patches.• Worked closely with IT Director, architect/assist in writing and enforcing – patching, DR, migration, upgrades, backup, capacity planning, production control strategies, and several other policies.• Trained Junior DBAs on ASM to ASM refreshes and non ASM refreshes, Building physical standbys on ASM and non ASM environments following Oracle best practices.• Experience in Administering Oracle Database using Oracle Enterprise Manager, Cloud control, Toad, SQLPLUS, PL/SQL Developer and SQL Developer.• Expert in creating RAC/Single instance multiple cascaded Data Guard architectures.• Experience in Capacity Planning, Space Management, Database Upgrade, Migration, RMAN Cloning, Disaster Recovery and Data Extraction.• Strong Trouble-shooting, Problem solving, Analytical and Design Skills.• Experience in different areas including Project Management, Business Analysis, Development, Implementation, Customizations and Upgrades.Skills: AWS, Azure Cloud, RAC, DataGuard, Performance Tuning, ACFS, Golden Gate, Data Center Migrations, Backup and Recovery, Patching and Maintenance, SQL tuning, Automation, High Availability and Disaster Recovery. SQL Server 2019, 2016, 2014, 2012, 2008, 2005, Clustering and Mirroring, SSRS, SSAS and SSIS.

Experience

1. Senior Database Administrator

   Tokio Marine HCC

   Dec 2020 — Present · Houston, TX, US

   Lead a POC and successful implementation of Ansible Tower to automate infrastructure patching. Lead AWS and Azure migrations and implementations for HA, performance boost and enterprise cost reduction. Implemented SQL Server AAG architecture on premises and AAG RDS multi-AZ on AWS for HA; several Azure SQL databases and Azure SQL Managed Instance migrations. Lead projects/teams on several vendor-based products including evaluations and implementations.

Education

• University of Houston

  Master, Computer Science

  2007 — 2009

Skills

• Virtualization
• Operating Systems
• Microsoft Sql Server
• Databases
• Sql
• Linux
• Oracle
• Oracle Rac
• Software Development
• Java
• Disaster Recovery
• Software Project Management
• Sharepoint
• Active Directory
• Unix
• Pl/Sql