Mainframe zOS System Programmer

1 week ago

Plano, TX, United States Maintec Technologies Full time
Position Summary: Mainframe zOS System Programmer

Job Description:

We are seeking an experienced z/OS System Programmer to join our mainframe team. The ideal candidate will have strong expertise in managing, maintaining, and upgrading IBM z/OS environments, with proven experience in performing z/OS product upgrades and related system enhancements.

Key Responsibilities:
  • Install, configure, and maintain IBM z/OS operating systems and related subsystems.
  • Plan, coordinate, and execute z/OS product upgrades, including PTF (Program Temporary Fix) application and migration activities.
  • Analyze system performance and troubleshoot issues related to z/OS and its components.
  • Manage system parameters, configuration files, and system initialization procedures.
  • Collaborate with application teams, network teams, and storage administrators to ensure smooth system operations.
  • Develop and maintain system automation scripts and tools to improve operational efficiency.
  • Monitor system logs and alerts, perform root cause analysis, and implement corrective actions.
  • Maintain documentation related to system configurations, upgrade procedures, and operational guidelines.
  • Ensure compliance with security policies and standards on the mainframe environment.
  • Provide technical support and training to junior system programmers and other IT staff.
  • Participate in disaster recovery planning and testing.
Required Skills and Experience:
  • Extensive experience with IBM z/OS operating system administration and system programming.
  • Hands-on experience with z/OS product upgrades, including:
    • Planning and scheduling upgrade activities.
    • Applying PTFs and managing SMP/E (System Modification Program/Extended).
    • Testing and validating system functionality post-upgrade.
    • Coordinating with IBM support and vendors during upgrade cycles.
  • Strong knowledge of z/OS components such as JES2/JES3, RACF, VTAM, TCP/IP, DFSMS, and JES.
  • Experience with SMP/E for software maintenance and installation.
  • Familiarity with mainframe hardware (IBM Z series) and related firmware upgrades.
  • Proficient in JCL, REXX, CLIST, and other scripting languages used in mainframe environments.
  • Good understanding of system security, backup, and recovery procedures.
  • Excellent problem-solving skills and ability to work under pressure.
  • Strong communication and teamwork skills.
Preferred Qualifications:
  • IBM z/OS System Programming certification.
  • Experience with automation tools like Ansible or IBM Z Automation.
  • Knowledge of z/OSMF (z/OS Management Facility).
  • Experience with performance tuning and capacity planning.

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