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# Mainframe Systems Programmer - ISV

- **Company:** Department of Labor
- **Location:** Madison, WI, United States (Remote available)
- **Experience:** Expert
- **Salary:** $85,000 - $148,000
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Software Documentation, Data Conversion, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Software Deployment, Software Project Management, Systems Integration, Z/OS, Tso/ispf, Scripting, Data Storage Management, Performance Monitor, Database Tools and Utilities
- **Published:** October 16, 2026
- **Apply:** https://www.juju.com/job/1_ensono-4707873005

## About the Role

Senior Mainframe Systems Programmer - ISVRemote - United StatesJR013893 We are seeking an experienced **ISV z/OS Systems Programmer** with strong expertise in the installation, maintenance, troubleshooting, and migration of Independent Software Vendor (ISV) products on the IBM z/OS platform.
This role will focus heavily on evaluating, replacing, and migrating software on a mainframe environment with alternative solutions while maintaining operational stability and performance.
The ideal candidate will possess deep technical knowledge of **mainframe systems programming, SMP/E software management, IBM utilities, and ISV product lifecycle management** , along with experience performing **product migrations and conversions** between competing vendor tools. **Key Responsibilities** + Install, configure, maintain, and upgrade **third-party ISV software products** in a z/OS environment. + Lead initiatives to **replace mainframe products** with alternative vendor solutions. + Perform **product evaluations, proof-of-concepts, and technical comparisons** of replacement tools. + Plan and execute **product migration and conversion activities** , including configuration changes, data conversions, and operational cutovers. + Maintain and manage software using **SMP/E** , including RECEIVE, APPLY, ACCEPT, USERMODs, and maintenance management. + Troubleshoot and resolve issues related to **ISV software installations, integrations, and runtime problems** . + Work with
application teams, operations, and vendors to diagnose system or product issues. + Develop and maintain **installation documentation, procedures, and migration runbooks** . + Assist in capacity planning, performance tuning, and operational support for ISV tools. + Support incident resolution and participate in root cause analysis for production issues involving ISV software. + Evaluate compatibility and impact of new z/OS releases on installed ISV products. **Required Skills and Experience** + Extensive experience as a **z/OS Systems Programmer** supporting enterprise mainframe environments. + Strong background in **installation and maintenance of ISV mainframe software products** . + Hands-on experience with **SMP/E software installation and maintenance processes** . + Experience performing **product migrations or conversions between competing vendor tools** . + Strong troubleshooting and diagnostic skills across the z/OS platform. + Experience with **IBM utilities and
system tools** commonly used in z/OS environments. + High-level working knowledge of **TSO/ISPF** environments and utilities. + Experience supporting multi-vendor ISV ecosystems in production mainframe environments. + Ability to analyze system documentation, vendor materials, and product architectures. **Preferred Qualifications** + Experience specifically **replacing ISV mainframe products** with alternative vendor solutions. + Familiarity with common ISV categories such as: + Output management + Security + Scheduling + Storage management + Performance monitoring + Database tools + Automation operations + Experience working with **vendor support organizations** to resolve complex technical issues. + Knowledge of **z/OS system internals, JES, RACF, and subsystem integration** . + Experience with automation, scripting, or operational tooling in the z/OS environment. **Personal Attributes** + Strong analytical and problem-solving skills. + Ability to
manage **complex migrations and product transitions** in production environments. + Excellent documentation and communication skills. + Self-motivated with the ability to work independently or as part of a systems engineering team. + Ability to work on multiple client projects at the same time **Typical Deliverables** + ISV product installation documentation + Migration and replacement project plans + Troubleshooting guides and operational procedures + Product comparison and evaluation reports + Maintenance and upgrade schedules Why Ensono?