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Mainframe zOS System Programmer
Mainframe zOS System ProgrammerMaintec Technologies • Plano, TX, United States
Mainframe zOS System Programmer

Mainframe zOS System Programmer

Maintec Technologies • Plano, TX, United States
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  • [job_card.full_time]
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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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