Remote Senior Mainframe Engineer — z/OS & Automation Lead

First National Bank of Omaha seeks a Senior Mainframe Engineer to lead, modernize z/OS environments, and drive efficiency across customer mainframe estates. You will guide upgrades, standardize mass maintenance, and oversee IBM/ISV software deployments while ensuring enterprise compliance and scalable delivery.

The role requires deep z/OS expertise, experience with VTAM/TCP/IP, and a strategic mindset to advance automation and reliability.