Full-time

IBM Mainframe Systems Engineer

Posted by PB Consulting • chicago, illinois, United-States

📍 chicago, illinois 🕒 June 11, 2026

About the Role

We are seeking an experienced IBM Mainframe Systems Engineer to support the engineering, modernization, and optimization of enterprise IBM Z environments. This role requires deep technical expertise across the mainframe technology stack, including system architecture, platform upgrades, performance tuning, security, and modernization initiatives. The ideal candidate will play a key role in ensuring platform stability, compatibility, scalability, and operational excellence within mission-critical environments.


Role and Responsibilities

Lead z/OS platform upgrade and modernization initiatives, including planning, testing, implementation, and stabilization activities.
Provide engineering support across core IBM Z technologies, including z/OS, z/VM, DB2 for z/OS, CICS TS, IMS, and IBM MQ.
Perform technical assessments, dependency analysis, and compatibility validation for system upgrades and infrastructure changes.
Analyze and optimize system performa...

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