Mainframe Systems Administrator

Western & Southern Financial Group; Cincinnati (OH); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Medical, dental, vision, and life insurance

401(k) savings plan

Paid time off

Tuition reimbursement

Parental leave

On-site fitness center

Employee discount program

Job summary

Western & Southern Financial Group is seeking a Mainframe Systems Administrator in Cincinnati, Ohio. This role involves managing z/OS and z/VM platforms, ensuring system performance, and overseeing security administration. Candidates should be adept at problem-solving and maintaining high-availability environments. The position offers a comprehensive benefits package, including insurance, a pension 401(k) plan, and opportunities for career development.

Qualifications

• Experience in managing and maintaining core z/OS and z/VM platforms.
• Strong problem-solving skills for technical issues in mainframe environments.
• Proficient in system performance, capacity, and security administration.

Responsibilities

• Manage and maintain core z/OS and z/VM platforms.
• Monitor system health and implement maintenance and upgrades.
• Coordinate with IT teams to resolve incidents and ensure compliance.

Skills

z/OS administration

z/VM management

JCL

Security administration

Performance monitoring

Networking utilities

Tools

SDSF/ISPF

System monitoring tools

Job description

A Day in the Life of a Mainframe Systems Administrator:

As a Mainframe Systems Administrator, you will manage and maintain core z/OS and z/VM platforms that support Western & Southern's critical business applications. You will oversee system performance, capacity, security administration, and operational reliability. Your day includes monitoring system health, implementing maintenance and upgrades, coordinating with internal IT teams on incident resolution, and ensuring stable and compliant mainframe operations. This role suits someone who enjoys deep technical problem‑solving, structured operational work, and maintaining high‑availability environments in a financial setting.

Key Tools & Technologies You’ll Work With:

• z/OS: Core operating system administration and maintenance.
• z/VM: Virtualization management for mainframe workloads.
• JCL: Job control for batch processing and operational workflows.
• Security administration and access management
• SDSF/ISPF: System monitoring, analysis, and command interfaces.
• Performance monitoring and capacity planning.
• Networking and storage utilities supporting mainframe operations.

Premier Benefits to Support You

• Medical, dental, vision, and life insurance
• 401(k) savings plan with pension options.
• Paid time off increasing with tenure.
• Tuition reimbursement and individualized career development plans.
• Parental leave and maternity leave with a 4‑week transition back to work.
• Access to on‑site amenities like a fitness center, cafeteria and more.
• Extensive employee discount program.