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# Mainframe Systems Engineer

- **Company:** CGI Group
- **Location:** Baltimore, MD, United States
- **Salary:** $56,600.0 - $139,300.0
- **Contract:** Permanent contract
- **Skills:** CLIST, Distributed Systems, Middleware, Job Control Language (JCL), Rexx (Programming Language), IBM Websphere Application Server, Job Entry Subsystem 2/3, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Z/OS, Tso/ispf, Build Management
- **Published:** May 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=0f0b73cbc14b93df

## About the Role

Strong experience administering IBM z/OS environments.
.Hands on experience with WebSphere on z/OS and related middleware.
.Expertise with SMP/E installation, maintenance, and software lifecycle operations.
.Proficiency with JCL, TSO/ISPF, RACF, JES2/JES3, and mainframe utilities.
.Strong analytical and diagnostic skills for mainframe performance and system errors.

Desired qualifications/non-essential skills required:
.Experience in large federal or enterprise mainframe environments.
.Familiarity with mainframe to cloud or modernization initiatives.
.Knowledge of REXX, CLIST, or automation tooling for mainframe operations., * Analytical Thinking

 * JCL
 * Mainframe
 * Technical Analysis
 * Websphere Application Server

## Description

Install, configure, maintain, and upgrade z/OS and related mainframe subsystems.
.Support mainframe software products including WebSphere for z/OS, middleware components, and system utilities.
.Perform SMP/E maintenance, system builds, patching, and compatibility assessments.
.Monitor mainframe system performance and perform tuning, troubleshooting, and workload optimization.
.Support integration between mainframe and distributed systems where needed.
.Provide diagnostic analysis, root cause investigations, and corrective action plans.
.Document system configurations, maintenance procedures, and operational processes.
.Collaborate with application teams and infrastructure groups to support deployments and modernization activities.


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