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# Mainframe Systems Manager

- **Company:** Redef Corp
- **Location:** New York, NY, United States
- **Contract:** Permanent contract
- **Skills:** Customer Information Control System (CICS), IBM DB2, Disaster Recovery, IBM Parallel Sysplex, IBM Mainframe, Job Entry Subsystem 2/3, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Z/OS, System Availability, Performance Monitor
- **Published:** August 28, 2026
- **Apply:** https://www.dice.com/job-detail/a783c08f-e38f-42be-aa7a-62935a1195d6

## About the Role

* Strong IBM Mainframe and z/OS administration experience
 * Experience with CICS, DB2, IMS, MQ, RACF, JES2/JES3, SMP/E
 * Mainframe performance monitoring and capacity planning
 * Disaster recovery and high-availability experience
 * Production support and troubleshooting expertise
 * Experience managing enterprise infrastructure projects
 * Team leadership and operational management experience

Preferred

 * Parallel Sysplex experience
 * Mainframe modernization exposure
 * Financial services or large enterprise environment experience

## Description

Seeking an experienced Mainframe Systems Manager to lead enterprise IBM mainframe operations and infrastructure support. This role is responsible for overseeing daily mainframe system operations, managing technical teams, ensuring system availability, supporting disaster recovery initiatives, and driving infrastructure upgrades and modernization efforts.
Key Responsibilities

 * Manage and lead the Mainframe Systems team
 * Oversee IBM mainframe operations, monitoring, and support
 * Ensure high availability and SLA compliance for production systems
 * Lead z/OS administration, performance tuning, and capacity planning
 * Support disaster recovery planning, testing, and implementation
 * Manage hardware/software upgrades and infrastructure projects
 * Coordinate with vendors and internal technical teams
 * Troubleshoot critical production incidents and provide 24/7 support when required
 * Maintain technical documentation and operational procedures


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