Staff Systems Mainframe Engineer

Senior z/OS mainframe engineer responsible for the reliability, performance, and security of our enterprise mainframe environment. This role backfills critical expertise lost to recent retirements and eliminates single-person dependencies across Parallel Sysplex, scheduling and automation, networking, security, and diagnostics. The ideal candidate is a broad z/OS generalist who installs, configures, tunes, and maintains z/OS and ISV products, operates independently across multiple platforms, and actively cross-trains the team to reduce single-point-of-failure risk.

8+ years supporting production enterprise z/OS mainframe infrastructure. Core z/OS systems programming: base control program, JES2/JES3, JCL, IPL, JES2 commands, and batch management. Software installation & maintenance: hands-on experience with SMP/E for product installation and maintenance. Hardware: z/Architecture hardware experience across z13 / z14 / z15 / z16. Parallel Sysplex / High Availability: Sysplex Distributor, Coupling Facility, GRS, and Workload Manager (WLM). I/O configuration: HCD / HCM administration of IODF / IOCDS / IOCP. Workload automation & scheduling: CA-7 / CA-11, automated operations tooling (AutoOps and/or OPS/MVS). Mainframe networking: TCP/IP, VTAM, FICON. Security administration: RACF and/or ACF2. Performance, capacity & monitoring: RMF/SMF, OMEGAMON and/or MAINVIEW. Scripting: REXX, CLIST. Modern management: zOSMF. DB2 for z/OS administration and IBM MQ Series support. Modernization: Ansible, Zowe, Python.