Mainframe z/VM Administrator (2 Positions)

Job Description – Mainframe z/VM Administrator (2 Positions)

Role Summary

The Mainframe z/VM Administrator is responsible for the administration, configuration, and operational support of IBM z/VM virtualization environments. This role ensures high availability, performance, security, and efficient resource utilization of Linux and guest operating systems hosted on IBM Mainframe platforms.

Key Responsibilities

🖥️ z/VM System Administration

· Install, configure, maintain, and upgrade the IBM z/VM operating system.

· Manage z/VM CP, CMS, and related virtualization components.

· Support provisioning, cloning, and lifecycle management of Linux on z virtual machines.

⚙️ Virtualization & Resource Management

· Administer and optimize CPU, memory, I/O, and network resources across z/VM guest systems.

· Monitor resource usage and ensure fair allocation and performance efficiency.

· Perform system tuning to support scalable and stable virtualized workloads.

📦 Guest OS & Linux Support

· Support multiple Linux distributions on z, including installation, configuration, and troubleshooting.

· Coordinate with Linux administrators and application teams to ensure guest OS stability.

· Assist with patching and maintenance activities for virtual guests.

🔐 Security & Access Control

· Implement and maintain z/VM security controls, including directory management and access authorization.

· Coordinate with RACF or external security teams where z/VM integrates with enterprise security controls.

· Support audit requirements and compliance initiatives.

📊 Monitoring, Performance & Capacity Planning

· Monitor system performance using z/VM tools and performance reports.

· Perform trend analysis and capacity planning to support growth and modernization initiatives.

· Proactively identify and resolve performance bottlenecks.

🔄 Incident, Change & Problem Management

· Provide L2/L3 support for z/VM‑related incidents and outages.

· Participate in change management processes, including risk assessment and validation.

· Perform root cause analysis and implement long‑term corrective actions.

🔁 Backup, Recovery & High Availability

· Support backup and recovery processes for z/VM systems and guest environments.

· Participate in disaster recovery planning, testing, and execution.

· Ensure system resiliency and quick recovery in case of failures.

📑 Documentation & Knowledge Transfer

· Maintain up‑to‑date architecture diagrams, procedures, and operational runbooks.

· Provide knowledge transfer and support handovers to operations teams.

· Contribute to continuous improvement and automation initiatives.

Required Skills & Experience

✅ Technical Skills

· Strong experience with IBM z/VM administration.

· Good working knowledge of Linux on z Systems.

· Understanding of mainframe virtualization concepts, networking, and storage.

· Experience with system monitoring, tuning, and performance analysis tools.

✅ Experience

· Typically 5–10+ years of experience in Mainframe or large‑scale virtualized environments.

· Proven experience supporting mission‑critical, 24×7 production systems.

· Exposure to enterprise incident, change, and problem management processes.