Senior Mainframe Automation Engineer (z/OS)

Apex Systems; Merrifield (VA); Hybrid; USD 110,000 - 165,000; Full time

Job summary

Apex Systems is seeking a Mainframe Engineer to lead automation initiatives using IBM System Automation for z/OS and IBM Workload Scheduler in Merrifield, Virginia. The role focuses on delivering scalable automation across z/OS subsystems and middleware, while guiding teams and improving operational efficiency.

Required expertise includes REXX programming, NetView, and experience with CICS/DB2/IMS environments. The position is hybrid, with on-site collaboration and on-call rotation as needed.

Qualifications

• Expert-level experience with IBM System Automation for z/OS, including administration, configuration, and policy development.
• Advanced REXX programming experience developing enterprise automation solutions.
• Strong experience with IBM NetView, including automation tables, message automation, and command lists.
• Experience with IBM Workload Scheduler (IWS, TWS, ZWS) and workload automation processes.
• Strong knowledge of Parallel Sysplex environments, cross-system automation concepts, JCL, SDSF, TSO/ISPF, and z/OS operations.
• Experience managing, monitoring, and supporting mainframe and/or distributed systems, business applications, and infrastructure platforms.

Responsibilities

• Investigate operational, technical, and business problems; analyze requirements; and recommend reliable automation solutions.
• Lead, guide, and mentor others while promoting best practices, process improvement, and operational efficiency.
• Develop enterprise automation solutions, command processors, automation routines, and operational tooling using REXX.
• Design, implement, and support automation across z/OS subsystems and middleware platforms such as CICS, Db2, IMS, JES2/JES3, MQ, and TCP/IP.
• Develop automation for CICS availability, recovery, startup, shutdown, restart, and health monitoring.
• Integrate automation with monitoring and event management tools such as IBM OMEGAMON, ServiceNow, and Moogsoft.
• Identify and implement automation opportunities across IBM z/Series, UNIX, and Windows operating systems.
• Support high-availability, recovery, restart, and self-healing automation solutions.
• Reduce manual intervention, improve operational reliability, and deliver scalable automation solutions.
• Participate in an on-call rotation as required.

Skills

IBM System Automation for z/OS

REXX

IBM NetView

IBM Workload Scheduler

JCL

TSO/ISPF

Parallel Sysplex

Education

Bachelor's degree in Information Technology

Tools

OMEGAMON

ServiceNow

Moogsoft

USS/OMVS

Job description

Apex Systems is seeking a Mainframe Engineer to lead automation initiatives using IBM System Automation for z/OS and IBM Workload Scheduler in Merrifield, Virginia. The role focuses on delivering scalable automation across z/OS subsystems and middleware, while guiding teams and improving operational efficiency.

Required expertise includes REXX programming, NetView, and experience with CICS/DB2/IMS environments. The position is hybrid, with on-site collaboration and on-call rotation as needed.