Mainframe Systems Programmer

Job Summary

The Mainframe Systems Programmer will be responsible for installation, configuration, tuning, and ongoing maintenance of IBM z/OS environments and associated ISV products. This role requires strong expertise in mainframe operating systems, hardware, system automation, networking, and security, supporting highly available SYSPLEX environments.

Key Responsibilities

Install, configure, tune, and maintain z/OS operating systems and ISV products

Manage and support SYSPLEX environments and Coupling Facility configurations

Perform SMP/E installation, maintenance, and upgrades

Configure and administer IODF/IOCDS/IOCP using HCD/HCM

Implement and manage z/OS system automation using IBM or ISV tools (CA OPS/MVS, NetView)

Support JES2 operations and system monitoring via zOSMF

Manage mainframe networking components including VTAM and TCP/IP

Support ZFS environments and migrate legacy HFS to ZFS using standard utilities

Troubleshoot system-level issues and ensure platform stability and performance Required Skills & Experience

Strong systems programming experience in a mainframe environment

In-depth knowledge of z/OS and z/VM operating systems

Experience with z/Architecture hardware (z13, z14, z15, z16)

Strong understanding of SYSPLEX, GRS, and Coupling Facility

Expertise in SMP/E and SMS (non-storage focused)

Knowledge of VTAM and TCP/IP networking (ports, devices, VIPA, SMTP)

Experience with JES2 commands and zOSMF

Hands-on experience with RACF security, certificates, and keyrings

Proficiency in REXX, system utilities, and exit routines

Experience using IBM and ISV monitoring tools (OMEGAMON, MAINVIEW) Competencies

Deep technical troubleshooting and analytical skills

Ability to manage complex system environments with high availability requirements

Strong understanding of enterprise mainframe architecture

Ability to work independently and manage critical system components Preferred Skills

z/VM installation, configuration, and administration

Experience with Vertel security components

Familiarity with automation best practices and emerging mainframe technologies