Mainframe z​/VM & Linux Engineer

We are seeking an experienced Mainframe z/VM & Linux Engineer to support IBM Z virtualization environments and Linux on Z platforms. The ideal candidate will have strong hands‑on experience with IBM z/VM, Linux on IBM Z, virtual machine administration, system maintenance, troubleshooting, and automation
.

• Install, configure, administer, and maintain IBM z/VM 6.x/7.x environments.
• Provision, scale, manage, and decommission virtual machines/guest systems.
• Administer Dir Maint, VMSES/E, RACF for z/VM
  , and related components.
• Perform RSU, PTF, APAR, and other z/VM maintenance activities.
• Perform system IPLs and hardware configuration updates using HMC
  .
• Install and maintain RHEL, SUSE, and Ubuntu Linux on IBM Z.
• Manage Linux workloads running on z/VM, including patching, upgrades, and vulnerability remediation.
• Monitor CPU, memory, I/O, capacity, and overall system performance.
• Troubleshoot z/VM, Linux, VM, storage, networking, and performance issues.
• Provide L2/L3 production support and analyze system logs and metrics.
• Automate operational and provisioning activities using REXX, Shell, and Python
  .
• Support CI/CD, Dev Ops, container, and application deployment initiatives.
• Implement Linux hardening and RACF-related security controls.
• Maintain system documentation, configuration records, and operational procedures.
• Follow ITIL/Service Now change management processes.
• Support disaster recovery planning, testing, and execution.

• Strong hands‑on experience with IBM z/VM 6.x/7.x.
• Strong experience administering Linux on IBM Z, particularly RHEL, SUSE, or Ubuntu.
• Experience with VM provisioning, lifecycle management, and Dir Maint
  .
• Hands‑on knowledge of VMSES/E, RSUs, PTFs, and APARs
  .
• Experience with HMC operations and IPL processes
  .
• Knowledge of z/VM storage, DASD, and networking.
• Strong troubleshooting and performance‑management skills.
• Experience with REXX and Shell scripting;
  Python is preferred
  .

• Experience with Sysplex, networking, and storage integration.
• Exposure to OMEGAMON, Grafana
  , or similar monitoring tools.
• Experience with Ansible and automation
  .
• Knowledge of Docker/Kubernetes and container workloads on Linux on Z.
• Exposure to hybrid cloud and enterprise integration environments.
• Experience with security, compliance, vulnerability remediation, and DR processes.

The ideal candidate is a hands‑on IBM Z professional who can independently manage z/VM virtualization and Linux on Z environments
, troubleshoot complex production issues, automate routine operations, and work effectively with infrastructure, application, security, and Dev Ops teams.

This position requires candidates to be able to work onsite in the Phoenix, AZ area three days per week
. Candidates open to relocation will also be considered.