Senior Mainframe Engineer - Remote, Cloud-Forward Leader

First National Bank of Omaha; Washington; Remote; USD 140,000 - 210,000; Full time

Benefits offered by this job

Medical, Dental, Vision Insurance

401k with matching

Time Off Programs

Tuition Assistance

Disability Insurance

Job summary

First National Bank of Omaha seeks a Senior Mainframe Engineer to lead technical teams and modernize z/OS environments. You will drive standardization, optimize processes, and ensure reliable delivery of mainframe services within our managed services group.

The role requires deep mainframe expertise and leadership to guide upgrades, mass maintenance, and installation of IBM software. Remote-friendly work with occasional travel; strong documentation and collaboration skills are essential.

Qualifications

• Proven experience in z/OS operating system upgrades, mass maintenance deployment, and software installation.
• In-depth knowledge of z/OS components: JES2, HCD/IODF, SMP/E, WLM, OMVS/USS, SMF/RMF, ASM, GRS, SDSF, TSO and RACF.
• Strong understanding of communication protocols (VTAM, TCP/IP) and LPAR configuration via HMC.
• Expertise in storage management (SMS, HSM, DFDSS, VSAM, IDCAMS, ICF Catalogs).
• Minimum 10 years of experience as a Mainframe Senior Systems Engineer

Responsibilities

• Serve as a technical leader, guiding best practices and mentoring team members on z/OS operating system upgrade optimization.
• Design and implement standardized approaches for z/OS upgrades and mass maintenance to ensure repeatable, high-quality outcomes.
• Lead efforts to optimize system performance, streamline processes, and reduce operational complexity.
• Oversee installation, configuration, and maintenance of IBM and ISV software products, ensuring alignment with enterprise standards.
• Collaborate with cross-functional teams to plan and execute operating system upgrades with minimal business impact.
• Develop and maintain comprehensive technical documentation and templates for operating system rollouts.
• Drive adoption of new technologies and capabilities (e.g., Sysplex enhancements, automation frameworks) to support strategic objectives.
• Act as the subject matter expert (SME) for mainframe infrastructure projects, providing technical direction and governance.
• Provide advanced troubleshooting and resolution for escalated incidents beyond Level 1 support.
• Participate in after-hours and weekend support as required.

Skills

z/OS upgrades

mass maintenance deployment

software installation

JES2

HCD/IODF

SMP/E

WLM

OMVS/USS

SMF/RMF

ASM

GRS

SDSF

TSO

RACF

VTAM

TCP/IP

HMC

SMS

HSM

DFDSS

VSAM

IDCAMS

ICF Catalogs

10+ years mainframe experience

CICS TS

IMS

DB2

IBM MQ

Tools

CICS TS

IMS

DB2

IBM MQ

Job description

First National Bank of Omaha seeks a Senior Mainframe Engineer to lead technical teams and modernize z/OS environments. You will drive standardization, optimize processes, and ensure reliable delivery of mainframe services within our managed services group.

The role requires deep mainframe expertise and leadership to guide upgrades, mass maintenance, and installation of IBM software. Remote-friendly work with occasional travel; strong documentation and collaboration skills are essential.