Mainframe_zVM Administrator

Tata Consultancy Services; Taguig; On-site; PHP 1,500,000 - 2,500,000; Full time

Job summary

Tata Consultancy Services in Metro Manila is seeking a highly skilled Mainframe z/VM Subject Matter Expert to lead z/VM platform engineering, administration, and modernization in a large-scale enterprise Z environment. The role is hands-on, requiring deep expertise across z/VM, zLinux, z/OS integration, mainframe networking, and security.

The candidate will operate at MINIMUM Level 2.5+ depth, handling design, troubleshooting, performance tuning, and platform modernization initiatives while

Qualifications

• 7–15 years of hands-on z/VM system programming experience.
• Experience in large-scale mainframe environments (5K–40K+ MIPS).
• Deep knowledge of z/VM, zLinux, z/OS integration, and RACF.

Responsibilities

• Design, troubleshoot, and performance tune z/VM platforms.
• Lead platform modernization initiatives and capacity planning.
• Provide Level 3 on-call support and root cause analysis (RCA).

Skills

z/VM

zLinux

z/OS integration

Mainframe Networking

Mainframe Security (RACF)

Performance tuning

Tools

OMEGAMON

RMF

VM Monitor

Job description

Job Title

Experience

7–15 years (Mandatory hands-on zVM System Programming experience)

Role Summary

Mainframe z/VM Subject Matter Expert (L2.5+ SME) in z/VM platform engineering, administration, and optimization in a large-scale enterprise Z environment. The role is highly hands-on, requiring deep expertise across z/VM, zLinux, z/OS integration, Mainframe Networking, Mainframe Security, and some Mainframe Hardware.

The candidate will operate at MINIMUM Level 2.5+ depth, handling design, troubleshooting, performance tuning, and platform modernization initiatives.

z/VM Core Engineering

• Experience in large-scale environments (5K–40K+ MIPS)
• Administer, configure, and manage IBM z/VM environments
• Install, upgrade, patch, and maintain z/VM OS and components
• Perform z/VM performance tuning and capacity management
• Troubleshoot system-level issues (CPU, memory, paging bottlenecks)
• RACF (zVM) including IAM, Digital Certificates, Audits and Compliance
• Manage various RHEL & SUSE Linux on IBM Z (zLinux) virtual machines
• Provision and manage guest systems using DIRMAINT / VM Directory

Operations & Engineering Support

• Handle Level 3 escalation support for incidents, problems, and changes
• Participate in root cause analysis (RCA) and permanent fixes
• Support 24x7 on-call rotation

Mainframe Hardware Knowledge

• LPARs, PR/SM, IOCDS, HCD, CHPID
• Storage integration (DS8K, Tape, GDPS)
• Contribute to z/VM architecture, scalability, and modernization initiatives
• Perform capacity planning, resource optimization, and perf tuning
• Implement DR/BCP and High Availability strategies

Secondary Skills (z/OS)

• Knowledge of: JCL, ISPF, SDSF, USS (Unix System Services)
• Monitoring tools: OMEGAMON, RMF, VM Monitor
• Knowledge of: CICS, DB2, MQ ecosystem, GDPS / DR solutions
• VTAM, SNA, TCP/IP concepts, OSA-Express, HiperSockets
• Enterprise Extender (EE), IP networking in Z
• RACF (z/OS and/or z/VM), ACF2 & Top Secret (good to have)
• Digital Certificates, TLS/SSL, AT-TLS

KEYWORDS