Mainframe Systems Administrator

Job Description

Sammons Financial is looking to bring in a Mainframe Programmer who will support the organization from an administration perspective with IBM z/OS Mainframes. This individual will perform system updates, disk management, backup and disaster recovery, and system/performance monitoring. The role requires efficient operation in an interruptive environment with frequent requests from the development team, managers, and stakeholders. An on‑call rotation is in place: typically a 10‑minute call from waking up to issue resolution, with a 3‑week rotation on average.

The person will not be programming but may construct and edit JCL code; this role is not a programmer.

• Perform regular IPL (Initial Program Load) cycles for maintenance.

• Apply PTFs (Program Temporary Fixes) and APARs for updates.

• Monitor WLM (Workload Manager) policies to ensure optimal resource distribution.

• Manage RACF (Resource Access Control Facility) and SDSF (System Displacement and Search Facility).

• Conduct capacity planning using RMF reports and predictive analytics.

• Operate JES2/JES3 (Job Entry Subsystem).

Experience Level
:
Expert

Technical Skills
: z/OS, Mainframe, IBM z/OS operating systems.

Job Type &

Location:

Contract to Hire position based out of Sioux Falls, SD.

Workplace Type: Fully remote.

Pay range: $60.00 – $72.00/hr.

Benefits 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)

The position is anticipated to close on Jan 5, 2026.

We’re partners in transformation. TEKsystems is an Allegis Group company offering full‑stack technology services and talent solutions, working with clients worldwide.

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.