Job Posting Title IMS System Programmer

Mainframe IMS System Programmer:

The Role:

We are seeking a highly skilled Mainframe IMS System Programmer to support and manage IBM z/OS IMS environments. The role is responsible for ensuring the stability, availability, performance, and security of IMS DB and IMS TM subsystems in a mission-critical banking or financial services environment.

Responsibilities:

• Install, configure, and maintain IMS DB and IMS TM subsystems on IBM z/OS

• Perform version upgrades, maintenance, and patching to ensure system currency and stability

• Manage and maintain IMS system definitions, including DBDs, PSBs, ACB libraries, and control regions

• Configure and tune buffer pools, parameters, and system resources to optimize performance

• Monitor IMS database and transaction performance, proactively identifying and resolving performance bottlenecks

• Troubleshoot and resolve system issues by analyzing logs, dumps, abends, and database errors

• Support IMS utilities, backup/recovery processes, and disaster recovery testing

• Ensure seamless integration with z/OS, DB2, MQ, CICS, TCP/IP, and Sysplex environments

• Implement and follow ITIL/ServiceNow change management processes for all system updates

• Maintain accurate technical documentation and system configurations.

• Required Qualifications:

  • 7+ years of experience with IBM z/OS operating system

  • Hands-on experience with IMS DB and IMS TM administration

  • Deep knowledge of:

  • DBD/PSB/ACB management

  • IMS control regions and transaction processing

  • Buffer pool tuning and performance optimization

  • Experience with IMS utilities, backup/recovery, and DR strategies

  • Strong troubleshooting skills (dump analysis, log analysis, abend resolution)

  • Experience integrating IMS with:

  • DB2, CICS, MQ, and distributed systems

  • Familiarity with RACF security controls for IMS environments

  • Experience with SMP/E, JCL, TSO/ISPF, SDSF

  • Understanding of Sysplex and high availability architectures

   

  Preferred Experience:

  • Exposure to IMS modernization or API enablement (z/OS Connect, REST integration)

  • Experience with monitoring tools (e.g., OMEGAMON, MainView, RMF)

  • Knowledge of automation tools (REXX, Ansible, z/OSMF workflows)

  • Experience with DB  control, TCPIP, ZOS Connect, Assembler routines.

  • Skill and experience with IMS Routines & Exit Routines will be a big plus.