Sandeep Kumar
DB2 DBA (z/OS Mainframe) | 11.5+ Yrs Experience | Release & Environment Management | Performance Tuning | Production Support | SQL Optimization | Agile & SLA-Driven | BFSI, Telecom, Transportation | TCS | Ex-HCL, Wipro
- Role
- Database Administrator at Tata Consultancy Services
- Location
- Bengaluru, KA, IN
- LinkedIn followers
- 500 followers
About Sandeep Kumar
I’m a dedicated DB2 Database Administrator (z/OS Mainframe) with over 12+ years of…
Experience
Database Administrator
Jul 2022 — Present · Bengaluru, IN
Client OverviewCSX Transportation is a Class I freight railroad company operating in the Eastern United States and the Canadianprovinces of Ontario and Quebec.Role & Responsibilities Managed DB2 database changes including DDL/DML execution, object creation/modification, & cross-regionsynchronization across Development, QA, & Production environments. Performed performance tuning & access path reviews for SQLs & stored procedures used in real-time logisticsworkflows; resolved issues related to locking, deadlocks, & inefficient query patterns. Delivered 24x7 on-call DBA support for high-availability systems, ensuring stability of mission-critical applicationsfor cargo scheduling, tracking, & routing operations. Executed end-to-end production release deployments, including implementation planning, backout strategy design,job validation in lower regions, & promotion to production. Utilized tools like IBM DB2 Admin Tool, BMC Catalog Manager, & IBM/BMC Change Managers, along with JCL & File-AID, for release automation & operational maintenance. Maintained documentation for database operations, authored runbooks & troubleshooting guides, and wasrecognized with client accolades including multiple Wall of Fame awards for consistent and high-quality supportdelivery.
Education
St. Clare's Sr. Sec. School
10th, CBSE
2006 — 2007
C M R Institute of Technology
Bachelor of Technology (B.Tech.), Computer Science
2009 — 2013
St. Clare's Sr. Sec. School
12th, CBSe
2008 — 2009
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