Mainframe Support Engineer

7 days ago

Pittsburgh, Pennsylvania, United States Compunnel Inc. Full time $104,000 - $156,000 per year

Mainframe Support Engineer

Loc – Lake Mary, FL or Pittsburgh, PA (Onsite)

All visas accepted

Relocation candidates are accepted

Position Summary

As a Mainframe Support Engineer on our Data Processing Services team, you will be the primary point of contact for the day-to-day operation, monitoring, and support of critical mainframe environment. You'll ensure system availability, troubleshoot incidents, and collaborate with development, operations, and business teams to keep batch and transactional processes running smoothly.

Key Responsibilities

  • Monitor daily batch schedules using Control-M and resolve scheduling failures
  • Triage and resolve production incidents in z/OS, CICS, and DB2 environments
  • Use tools such as SDSF to analyze system performance and capacity
  • Manage change deployment via Git
  • Execute JCL, perform dataset and tape management, and apply OS/Subsystem maintenance
  • Maintain and update run-books, Standard Operating Procedures and support documentation
  • Liaise with application teams to diagnose defects, implement workarounds, and coordinate fixes
  • Participate in on-call rotation to provide 24×7 support, including weekend and holiday coverage
  • Conduct root-cause analysis and drive continuous improvements to reduce incident repeatability
  • Collaborate with security, audit and compliance teams to enforce policies and complete health checks
  • Mentor junior support staff and contribute to knowledge-sharing sessions

Required Qualifications

  • Bachelor's degree in Computer Science, Information Systems, or equivalent
  • 3+ years of hands-on experience supporting mainframe platforms (z/OS)
  • Proficiency with:
  • JCL, TSO/ISPF, REXX or CLIST scripting
  • COBOL, DB2 Stored Procedure
  • CICS support fundamentals
  • DB2 data management
  • SDSF for monitoring and diagnostics
  • Experience with Git
  • Strong troubleshooting skills and comfort working under pressure
  • Excellent verbal and written communication; able to clearly document technical procedures
  • Willingness to participate in a 24×7 on-call support rota

Preferred Qualifications

  • Experience with automation and DevOps practices on z/OS (Ansible, etc.)
  • Familiarity with mainframe modernization or integration technologies (e.g., MQ, Java on z/OS)
  • Prior exposure to ITIL incident, problem and change management processes
  • Financial-services industry experience

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