Remote Senior Mainframe Engineer: z/OS Upgrades & Automation

First National Bank of Omaha (FNBO) is seeking a Senior Mainframe Engineer to lead and modernize z/OS environments within our managed services team. You will drive standards, optimize processes, and ensure reliable delivery of mainframe services while guiding strategic modernization initiatives.

The ideal candidate brings deep mainframe expertise, a track record of leading complex upgrades, and the ability to influence across cross-functional teams.