Senior Mainframe Engineer - z/OS & Automation (Remote)

First National Bank of Omaha (FNBO) is seeking a Senior Mainframe Engineer to lead modernization efforts for z/OS environments. You will drive standardized upgrade processes, mentor engineers, and ensure high-quality, scalable mainframe services across client environments.

You will collaborate with cross-functional teams to implement automation, optimize performance, and maintain comprehensive technical documentation, while contributing to after-hours support as needed.