Data Center Mainframe Operator

Responsibilities

• Operate mainframe systems in a secure DoD environment, ensuring continuous system availability.
• Monitor system consoles, JES queues, and automated operations tools to maintain stable production processing.
• Execute batch job scheduling, restarts, reruns, and failure resolution following approved JCL and operational procedures.
• Perform IPLs, system startups, shutdowns, and recovery actions in accordance with TMs, SOPs, and established protocols.
• Manage DASD, tape libraries, printers, and other peripheral devices.
• Respond to system alerts and incidents; perform first-level troubleshooting and escalate per incident management procedures.
• Maintain accurate logs, shift documentation, and audit-ready records supporting cybersecurity and configuration management requirements.
• Support COOP and Disaster Recovery exercises and real-world events.
• Enforce access controls, data handling rules, and OPSEC/IA requirements.
• Clock in and out as required to support 24x7 coverage.

Qualifications

• Must pass initial and recurring background investigations.
• Must comply with all DoD physical security, cybersecurity, and OPSEC requirements.
• 2+ years of hands-on experience operating enterprise mainframe systems in a production environment.
• Equivalent education or certifications may be considered in place of experience.
• Familiarity with batch scheduling tools and mainframe operational workflows.
• Experience supporting DoD, classified, or highly regulated environments.
• Ability to work rotating shifts, including nights, weekends, and holidays when mission needs require.

Preferred Qualifications

• Prior experience supporting DoD, DISA, or service-specific environments (Army, Navy, Air Force, Space Force).
• Knowledge of ITIL-based incident, problem, and change management processes.
• Experience with mainframe automation, monitoring, and console management tools.
• Familiarity with DoD RMF processes and cybersecurity controls.

Clearance Requirements

This position requires a current Secret clearance. Must be a U.S. Citizen.

Physical Requirements

The ideal candidate must at a minimum be able to meet the following physical requirements of the job with or without a reasonable accommodation:

• Ability to perform repetitive motions with the hands, wrists, and fingers.
• Ability to engage in and follow audible communications in emergency situations.
• Ability to sit for prolonged periods at a desk and working on a computer.