Modern Agile Technologies, LLC
Modern Agile Technologies, LLCVerified Source

Mainframe z/OS System Programmer, IBM Mainframe Support

Partially · Phoenix, Arizona
Posted August 12, 2026
contract

Overview

You will own the installation, customization, and maintenance of z/OS operating systems in a hybrid Phoenix environment. You will ensure stability and performance for IBM mainframe systems supporting large-scale enterprise apps. Your team handles CICS, DB2, and IMS environments. This contract-to-hire role offers direct impact on mission-critical operations.

What You'll Do8

  • 1Install and customize z/OS and system software on IBM mainframes.
  • 2Maintain and patch z/OS to ensure security and availability.
  • 3Monitor system performance, tuning z/OS and JES2.
  • 4Debug and resolve z/OS issues with IPL and SMP/E.
  • 5Support CICS, DB2, and IMS subsystems.
  • 6Automate system tasks using REXX and CLIST.
  • 7Manage storage and RACF security definitions.
  • 8Collaborate with application teams on z/OS upgrades.

Requirements8

  • 15+ years as a z/OS system programmer.
  • 2Experience with SMP/E and system assembly.
  • 3Knowledge of RACF and security administration.
  • 4Proficiency in REXX or CLIST scripting.
  • 5Hands-on with JES2 and JES3.
  • 6Experience with CICS and DB2.
  • 7Bachelor's degree in computer science or related.
  • 8Strong debugging skills with IPL and dumps.

Salary Insight

Salary not disclosed in listing

Location

Typepartially
LocationPhoenix, Arizona

Required Skills

IBM z/OSMainframe System ProgrammingPerformance TuningSecurity ManagementSystem Software Maintenance
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