Top 9 Mainframe Operator Jobs

Data Center Mainframe Operator
Na Ali'i Consulting & Sales, LLC. —Fort Knox, KY
- $67,160 - $100,280 a year
- Weekends as needed
- Mid-level
- Ability to sit for extended periods
- 2 years
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AS400 Operator
Sid Harvey Industries I —Garden City, NY
- $85,000 - $95,000 a year
- Weekends as needed
- Mid-level
- Office
- Windows
- Profit sharing
- Paid holidays
Computer Operator II (5768)
Three Saints Bay, LLC —Newport, RI
- $26.91 an hour
- Background check
- Mid-level
- Office
Quick Apply
Computer Operator, (SG-10), Computer Operator Trainee (SG-08) Item# 08216
State of New York - State Comptroller, Office of the —Troy, NY
- $40,391 - $55,322 a year
- Weekends as needed
- Background check
- Customer service
- High school diploma or GED
- Paid holidays
- Health insurance
2d
System Administrator II - Information Technology Department
Dade County Federal Credit Union —Doral, FL
- From $35 an hour
- Full-time
- Computer science
- Computer Science
- Research
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Data Center Operations Analyst
Western & Southern Financial Group —Fremont, MI
- Extended hours
- Microsoft Word
- Computer science
- Microsoft Excel
18h
Programmer Analyst II
PNM (PNMR) —Albuquerque, NM
- $73,060 - $120,548 a year
- Full-time
- Computer literacy
- Mid-level
- Office
1d

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IBM ISeries/AS400 Computer Operator
Spears Manufacturing Company —Sylmar, CA
Troubleshoot hardware and software issues promptly, escalating complex problems to technical support teams when necessary.
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Loren Cook Company —Springfield, MO
A minimum of 1 year experience or recent formal training in a high level programming language. This person will be responsible for developing new applications,…
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10d

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Data Center Mainframe Operator

Na Ali'i Consulting & Sales, LLC. -
Fort Knox, KY

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Job Details

Full-time
$67,160 - $100,280 a year

Qualifications

Government information & network security
Mainframe

Full Job Description

Nakupuna Prime is looking for a Data Center Mainframe Operator to serve as part of the U.S. Army Human Resources Command (HRC) data center operations team, ensuring the availability, integrity, and security of enterprise mainframe computing resources. This role supports mission‑critical systems used for personnel, logistics, warfighter readiness, and command‑and‑control functions.

This position is designated as a floater, meaning the operator will primarily work the 1100–1900 shift but must be able to flex across all shifts (1st, 2nd, and 3rd) to maintain 24x7 coverage. Reliability, adaptability, and strict adherence to DoD standards are essential.

The following reflects management’s definition of essential functions for this job but does not restrict the tasks that may be assigned.

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.
Coordinate with government, military, and contractor personnel to ensure mission success.

Skills/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.

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Refine Your Search

Mainframe Operator jobs

Data Center Mainframe Operator

AS400 Operator

Computer Operator II (5768)

Computer Operator, (SG-10), Computer Operator Trainee (SG-08) Item# 08216

System Administrator II - Information Technology Department

Data Center Operations Analyst

Programmer Analyst II

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