Senior Mainframe Administrator - z/OS & High Availability

Western & Southern Financial Group; Cincinnati (OH); On-site; USD 110,000 - 140,000; Full time

Benefits offered by this job

Medical, dental, vision, and life保险

401(k) savings plan with pension

Paid time off with tenure-based accrue

Tuition reimbursement

Parental leave

On-site fitness center & cafeteria

Employee discount program

Job summary

Western & Southern Financial Group is seeking a Senior Mainframe Systems Administrator to manage and maintain core z/OS and z/VM platforms supporting critical business applications.

You will oversee system performance, capacity, security administration and operational reliability, coordinating with internal IT teams on incident resolution and ensuring stable mainframe operations. This role suits someone who enjoys deep technical problem-solving.

Qualifications

• Senior-level Mainframe Systems Administration experience.
• Experience managing z/OS and z/VM environments in a financial setting.
• Strong skills in incident resolution, reliability engineering and capacity planning.

Responsibilities

• Monitor system health and performance, plan maintenance and upgrades.
• Coordinate with IT teams to resolve incidents and ensure high availability.
• Maintain secure, compliant mainframe operations in a financial services environment.

Skills

Mainframe administration

System monitoring

Capacity planning

Security administration

Tools

z/OS

z/VM

JCL

SDSF/ISPF

Job description

Western & Southern Financial Group is seeking a Senior Mainframe Systems Administrator to manage and maintain core z/OS and z/VM platforms supporting critical business applications.

You will oversee system performance, capacity, security administration and operational reliability, coordinating with internal IT teams on incident resolution and ensuring stable mainframe operations. This role suits someone who enjoys deep technical problem-solving.