Senior Mainframe Systems Programmer – zVM

🕒 October 6, 2025

🇺🇸 United States – Remote

💵 $85k - $148k / year

⏰ Full Time

🟠 Senior

🖥 Software Engineer

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Ensono

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Cloud Services • IT Services • Managed Services

Ensono is a managed service provider and expert technology advisor focused on enabling clients to navigate complex IT environments. Ensono offers services including mainframe-as-a-service, cloud migration, and IT infrastructure management, with a strong emphasis on modernizing legacy systems and optimizing IT operations. The company is recognized for its flexibility and allyship, providing businesses with the ability to adapt and evolve through solutions like Ensono Flex®. It specializes in both mainframe and cloud solutions, holding competency in AWS mainframe modernization and is a global Azure Expert MSP. Ensono acts as an ally, helping companies achieve better business outcomes through IT innovation and strategic technology advisement.

📋 Description

• A Senior IBM z/VM Systems Programmer ensures the stability, integrity, and efficient operation of information systems that support core organizational functions and clients. • This is achieved by monitoring, maintaining, supporting, and optimizing all operating systems assigned. • This position reports to the Manager of the z/VM, z/Linux team and is responsible for assisting in the management of the z/VM operating systems across multiple LPARS and multiple clients. • Storage management, system backup/restore, tape encryption, disaster recovery planning. • Support Incident and Change Management processes. • Provide metrics tracking operational performance and quality of services delivered. • Assist Data Center Operations to ensure SLAs are met. • Coordinate system modifications with IT and business unit managers. • Support multiple annual Disaster Recovery exercises across a diverse set of client environments. • Manage z/VM systems: Software, Availability, Network, Capacity and performance, Storage, Directory and security. • Working in a collaborative multi-client Environment.

🎯 Requirements

• Minimum of 10 years of experience or equivalent combination of education and experience • Ability to upgrade and maintain z/VM using VMSES • Install/administer z/VM related ISV products (e.g. CA-VM:Manager) • Working knowledge of managing z/VM security with VM:Secure and RACF is preferred • z/VM performance/capacity tuning & reporting experience is preferred • Experience with Installation and implementation of SSI (Single System Image) is desired • Experience with, storage administration, DFSMS/VM, and virtual tape is helpful • Experience supporting z/VM to facilitate workloads: • Linux on IBM Z • VSEn and z/VSE • CMS • z/OS • Ability to provision and manage virtual machines by manually manipulating VM directory and/or using tools such as VM:Secure or DirMaint • System network design and configuration at operating system level required with OSA, TCP/IP, and VSWITCH. Experience with OSA-ICC, RSCS and VTAM is also helpful. • Storage management, system backup/restore, tape encryption, disaster recovery planning • Support Incident and Change Management processes • Provide metrics tracking operational performance and quality of services delivered • Assist Data Center Operations to ensure SLAs are met • Coordinate system modifications with IT and business unit managers • Support multiple annual Disaster Recovery exercises across a diverse set of client environments • Mentor junior team members with all areas of responsibility • Familiarity with the tool ServiceNow is preferred

🏖️ Benefits

• Unlimited Paid Days Off • Three health plan options through Blue Cross Blue Shield • 401k with company match • Eligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts • Paid Maternity Leave, Paternity Leave, and Sabbatical Leave • Education Reimbursement, Student Loan Assistance or 529 College Funding • Enhanced fertility coverage • Wellness program • Flexible work schedule • Depending on location, ability to take advantage of fitness centers