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# Senior Mainframe Systems Programmer - ISV

- **Company:** Ensono
- **Location:** Miami, FL, United States (Remote available)
- **Experience:** Expert
- **Salary:** $85,000.0 - $148,000.0
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Software Documentation, Data Conversion, Job Entry Subsystem 2/3, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Software Deployment, Software Project Management, Subsystems, Systems Integration, Z/OS, Tso/ispf, Scripting, Data Storage Management, Software Troubleshooting, Performance Monitor, Database Tools and Utilities
- **Published:** October 26, 2026
- **Apply:** https://www.miamigigs.com/job.asp?id=3468244611&tx=FP5148FFL&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

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., * 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., * 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., * 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

## Description

* 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.