Mainframe Computer Operator

Description

The Mainframe Computer Operator is responsible for monitoring, analyzing, and supporting a wide range of batch jobs running on MVS/OS-390 systems. This role requires strong problem‑solving skills, experience with JCL, and the ability to work across both mainframe and client/server environments. The operator will collaborate with developers, production support teams, and customers to ensure reliable and efficient job scheduling, execution, and documentation.

• Monitor batch workloads on the mainframe, ensuring successful job completion across complex job flows.
• Troubleshoot and resolve job abends, including reviewing or modifying JCL as needed.
• Perform scheduling tasks and job submissions for developers and end users.
• Utilize scheduling tools‑preferably Control‑M to manage job runs, dependencies, and workflows.
• Serve as a liaison between technical developers and production support teams.
• Operate effectively across Acceptance and Production environments.
• Document incidents and problem resolutions using Tivoli tools.
• Create, modify, and review job documentation and ensure accuracy of operational procedures.
• Perform functional testing and create Change Man packages for mainframe deployments.
• Maintain AJS best practices and perform QA checks to ensure compliance with organizational standards.
• Participate in SUITES/CEDARS meetings as required.
• Provide training, mentorship, and guidance to other staff members.

• Experience as a Mainframe Computer Operator in MVS / OS-390 environments.
• Strong knowledge of JCL, SDSF, TSO, and related mainframe utilities.
• Familiarity with scheduling tools such as Control‑M or equivalent platforms.
• Ability to analyze complex scheduling flows and identify issues or risks.
• Strong teamwork skills with the ability to work independently when needed.
• Excellent interpersonal, communication, and documentation skills.
• High level of dependability, attention to detail, and a positive, proactive mindset.
• Ability and desire to learn all aspects of CPS production operations.

• Mainframe: CICS, TSO, SDSF, JCL, IDMS, DB2, VSAM, Change Man, HODv
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• Scheduling/Monitoring: Control‑M, Argent (AJS), Tivoli
• Workstation/Client Systems: Thin Client, MS Office products
• Platforms: Mainframe & LAN environments

• Wednesday‑Friday: 1:30 PM – 10:30 PM
• Saturday: 5:30 PM – 6:30 AM

This is a Contract position based out of Madison, WI.

The pay range for this position is $28.00 – $30.00/hr eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include:
Medical, dental & vision;
Critical Illness, Accident, and Hospital; 401(k) Retirement Plan – pre‑tax and Roth post‑tax contributions available;
Life Insurance (Voluntary Life & AD&D for the employee and dependents);
Short and long‑term disability;
Health Spending Account (HSA);
Transportation benefits;
Employee Assistance Program;
Time Off/Leave (PTO, Vacation or Sick Leave).

This is a hybrid position in Madison, WI.

This position is anticipated to close on Jan 9, 2026.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.