z/VM and z/OS System Programmer

z/OS. z/VM System Programmer Function Mainframe / Infrastructure, We are seeking an experienced z/VM and z/OS System Programmer to join our mainframe operations team. The successful candidate will be responsible for the end-to-end design, installation, configuration, and ongoing maintenance of mainframe systems software and hardware. This role demands a deep, comprehensive understanding of both z/VM and z/OS operating systems and their associated components, enabling mission-critical business continuity and performance., z/OS Responsibilities

• Design, install, configure, and maintain z/OS operating system and related subsystems
• Administer and manage Unix System Services (USS) environments on z/OS
• Perform software installation, maintenance, and upgrades using SMP/E (System Modification Program/Extended)
• Manage hardware configuration including HCD (Hardware Configuration Definition) and IODF definitions
• Conduct capacity planning to ensure system resources meet current and future business demands
• Monitor, analyze, and tune system performance to optimize throughput and response times
• Provide installation, configuration, and support for ISV (Independent Software Vendor) products
• Manage system catalogs, DASD, and storage management subsystem (SMS) policies
• Collaborate with security teams on RACF administration and compliance requirements

z/VM Responsibilities

• Install, configure, and maintain z/VM Control Program (CP) and Conversational Monitor System (CMS)
• Administer RACF security on z/VM environments to ensure access control and audit compliance
• Manage Group Control System (GCS) for SNA communications and VTAM support
• Configure and maintain Remote Spooling Communications Subsystem (RSCS) for print and file transfer
• Administer VM/VTAM for SNA network connectivity within the z/VM environment
• Manage virtual machine definitions, guest operating system support, and resource allocation
• Support Linux on IBM Z guest environments hosted on z/VM hypervisor

General Responsibilities

• Troubleshoot and resolve complex system issues, outages, and performance bottlenecks
• Develop and maintain system documentation, runbooks, and operational procedures
• Participate in change management processes and maintenance windows
• Work closely with application, network, storage, and security teams on cross-functional initiatives
• Provide on-call support for critical mainframe incidents as needed
• Mentor junior team members and contribute to knowledge-sharing initiatives

5+ Years (z/OS & z/VM), * Bachelor''s degree in Computer Science, Information Technology, or a related field - or equivalent practical experience

• Minimum 5+ years of hands-on experience as a Mainframe Systems Programmer
• Proven expertise in z/OS systems programming including USS, SMP/E, hardware configuration, and performance management
• Strong working knowledge of z/VM components: CP, CMS, RACF, GCS, RSCS, and VM/VTAM
• Experience with ISV product installation and support on z/OS
• Solid understanding of mainframe hardware architecture (IBM Z series)
• Familiarity with JCL, REXX, and mainframe scripting languages
• Ability to interpret system logs, SMF data, and RMF/CMF performance reports