Mainframe Developer

Freelance Mainframe IMS Application DBA (IMS DBA Analyst)

We are looking for an experienced Mainframe IMS Application DBA / IMS DBA Analyst to support mission-critical IMS database environments running on IBM z/OS.

The ideal candidate should have strong hands-on experience in IMS Database Administration, performance tuning, database recovery, IMS utilities, and troubleshooting in high-availability enterprise environments.

Location: Remote

Engagement: Part-Time / Freelance

Experience: 5+ Years

️ Technology: IBM z/OS | IMS DB | IMS DBA | HALDB | Fast Path | Full Function

Key Responsibilities

• Install, configure, maintain, and support IMS DB environments

• Administer Full Function, Fast Path, and HALDB databases

• Perform database definition, allocation, dataset management, REORGs, and space management

• Manage DBD, PSB, ACB libraries, and IMS Catalog

• Execute IMS utilities including Load/Unload, Reorganization, Image Copy, and Recovery

• Perform Image Copy Recovery and Point-in-Time (PIT) Recovery

• Troubleshoot database abends such as Uxxxx and S0Cxx

• Investigate data corruption, integrity issues, space constraints, and application-related database issues

• Perform IMS database performance monitoring and tuning

• Support physical database design and database builds

• Work closely with Application Development, IMS System Programming, and Operations teams

• Provide independent application development and database support

• Create technical solution designs, process flows, and procedural documentation

Mandatory Skills

✅ 5+ years of IMS DBA experience in IBM z/OS environments

✅ Strong hands-on experience with IMS DB

✅ Experience with Full Function, Fast Path & HALDB

✅ Knowledge of Secondary Indexing & Logical Relationships

✅ Experience with IMS Database Performance & Tuning

✅ Strong knowledge of IMS Database Backup & Recovery

✅ Hands-on experience with IMS utilities

✅ Experience with DBD, PSB, ACB & IMS Catalog

✅ Experience troubleshooting IMS database abends and data integrity issues

✅ Strong z/OS, JCL, TSO/ISPF & SDSF knowledge

✅ Experience supporting batch and online IMS DB/DC environments

✅ Knowledge of Sysplexed Data Sharing

✅ Experience with database monitoring and troubleshooting

Good to Have

• BMC IMS utility and monitoring tools

• OMEGAMON / MainView

• REXX scripting and automation

• IMS integration with DB2, CICS, MQ

• z/OS Connect / IMS modernization

• Data replication and integration solutions

• Large-scale IMS database migration/consolidation

• ISPW / ServiceNow

• VISIO

• Experience in SOX / PCI or other regulated environments