> Markdown version of [/jobs/ext/681160-senior-mainframe-systems-programmer-isv-z-os-2](https://www.wearedevelopers.com/jobs/ext/681160-senior-mainframe-systems-programmer-isv-z-os-2). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Mainframe Systems Programmer - ISV z/OS-2 - **Company:** Ensono - **Location:** Downers Grove, IL, United States (Remote available) - **Experience:** Expert - **Salary:** $85,000.0 - $148,000.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Software Documentation, Data Conversion, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Broadcom, Software Deployment, Software Project Management, Systems Integration, Z/OS, Tso/ispf, Scripting, Data Storage Management, Performance Monitor, Database Tools and Utilities - **Published:** June 28, 2026 - **Apply:** https://www.juju.com/job/00000000gc03m1 ## About the Role 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., + 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 ## Description 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 Broadcom (CA) mainframe products** with alternative solutions while maintaining operational stability and performance., + 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. ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)