System Programmer

Systems Programmer
Remote
July 9, 2026
Full Time
Application ends: October 8, 2026
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Job Description

Description

We are seeking an experienced Mainframe CICS System Programmer to support and manage enterprise CICS environments within IBM z/OS systems. This is an infrastructure-focused role responsible for maintaining the stability, performance, and availability of CICS Transaction Server environments. The ideal candidate will have deep hands-on experience with CICS subsystem configuration, upgrades, and performance tuning, rather than application-level development. Duties:

  • Ensure CICS production and test regions are stable, available, and operating efficiently
  • Monitor system health and proactively address performance or availability risks
  • Support day-to-day operations of enterprise CICS environments
  • Install, configure, and maintain CICS Transaction Server (CICS TS) environments
  • Perform system upgrades, patching (PTFs), and version migrations
  • Define and maintain: Region startup parameters (DFHSIT); Resource definitions (RDO); System configuration settings
  • Monitor transaction performance and system metrics
  • Analyze and troubleshoot
  • Transaction response times
  • CPU utilization
  • Storage usage
  • Tune system parameters to optimize performance and eliminate bottlenecks
  • Diagnose and resolve complex issues using: Dumps, logs, and traces; Abend analysis
  • Identify root causes of system-level CICS failures and implement fixes
  • Provide support for incident resolution in production environments
  • Work with RACF/security teams to manage secure access to CICS resources
  • Support integration with enterprise systems, including: DB2; MQ; IMS; TCP/IP and web services
  • Support distributed and Sysplex environments
  • Maintain accurate system documentation and configuration records
  • Ensure all changes follow established ITIL/ServiceNow change management processes
  • Support audit, compliance, and operational standards

Requirements

  • 5+ years of experience in IBM mainframe (z/OS) environments
  • Strong hands-on experience with: CICS Transaction Server (CICS TS); CICS installation, configuration, and maintenance
  • Experience managing: CICS regions and system parameters; Resource definitions (RDO) and startup configurations
  • Experience with performance monitoring and tuning tools
  • Strong troubleshooting skills for system-level issues, dumps, and performance problems

Preferred Qualifications:

  • Experience with Sysplex environments
  • Experience integrating CICS with DB2, MQ, IMS, and distributed systems
  • Automation or scripting experience (REXX, Python, Shell)
  • Experience working in financial services or large enterprise environments
  • Familiarity with monitoring tools (OMEGAMON, MainView, TMON, etc.)
  • Knowledge of mainframe security practices (RACF)

Are you interested in this position?
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