24x7 Mainframe Operator

Job Description:

About the Role

We are seeking a z/OS Mainframe Operator to join our 24×7 Operations team, supporting mission‑critical enterprise systems. This role is responsible for the continuous monitoring, control, and operational support of IBM z/OS mainframe environments, ensuring system availability, stability, and service level objectives are consistently met.

You will work as part of a highly skilled operations team, acting as the first point of response for production events, batch processing issues, and system alerts across multiple environments.

Key Responsibilities

• Provide 24×7 operational support for z/OS mainframe environments across rotating shifts
• Monitor system consoles, automation tools, and hardware/software alerts
• Execute and monitor batch processing and scheduling, ensuring production deadlines are met
• Perform first‑level incident investigation, troubleshooting and recovery for batch, console, and system issues
• Execute job restarts, reruns, holds, and releases in accordance with documented procedures
• Monitor and manage output and report distribution
• Perform system start/stop activities, including scheduled IPLs and planned maintenance tasks
• Maintain accurate incident, change, and operational documentation
• Escalate incidents to specialist support teams in line with operational procedures and SLAs
• Participate in disaster recovery activities and testing exercises
• Communicate effectively with internal stakeholders during incidents and service events

Skills & Experience

Essential:

• Experience working in a z/OS mainframe operations or production support environment
• Working knowledge of:
  • z/OS, JES2/JES3
  • JCL
  • TSO/ISPF, SDSF
• Familiarity with at least one enterprise scheduling tool (e.g. Control‑M, CA‑7, IBM Workload Scheduler)
• Experience supporting batch processing in a 24×7 environment
• Understanding of ITIL Incident, Change, and Problem Management practices
• Strong analytical, troubleshooting, and communication skills
• Ability to work independently and make sound decisions under pressure

Desirable:

• Experience with automation and monitoring tools (e.g. OPS/MVS, NetView)
• Exposure to output management tools (e.g. Control‑D, OMCS)
• Experience supporting regulated or mission‑critical environments (financial, government, utilities)
• Prior experience working on rotating 12‑hour shift rosters

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At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

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