Senior z/OS Mainframe Engineer | Lead Upgrades & Automation

First National Bank of Omaha is seeking a Senior Mainframe Engineer to provide technical leadership across our z/OS environments. The role focuses on modernizing mainframe operations, developing standardized upgrade approaches, and guiding complex OS rollouts to deliver reliable services.

You will work in a remote-capable environment and collaborate with cross-functional teams to reduce downtime while driving efficiency and scalability across customer environments.