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# Mainframe Systems Engineer

- **Company:** Akaasa Technologies
- **Location:** Malvern, PA, United States
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, IBM AIX, Apache HTTP Server, Apache Tomcat, Systems Engineering, Architectural Patterns, Customer Information Control System (CICS), Cloud Computing, COBOL (Programming Language), Databases, IBM DB2, Linux, Disaster Recovery, Distributed Data Store, Middleware, IBM Hardware Management Console, Monitoring of Systems, Job Control Language (JCL), IBM WebSphere MQ, Rexx (Programming Language), Tivoli Management Framework, IBM Websphere Application Server, Interactive System Productivity Facility (ISPF), Mainframes, Microsoft SQL Server, Windows Servers, SAS (Software), Management of Software Versions, Z/OS, Easytrieve, Omegamon, Microfocus
- **Published:** July 12, 2026
- **Apply:** https://www.careerjet.com/jobad/us7f2a2c5ea1203568b98ba7b2273e055e

## About the Role

* Mainframe Core: Deep proficiency in z/OS, JCL, ISPF, REXX, and SAS Programming.
 * Platform Breadth: Hands-on experience with AIX (pSeries), Linux, and Windows Server environments.
 * Messaging & Web: Expert-level knowledge of IBM MQ, WebSphere (v5.1 through v8.5), Tomcat, and Apache HTTP Server.
 * Hardware Management: Familiarity with HCD/HCM, HMC, and fiber-attached storage/tape devices.
 * Legacy Tooling: Experience with Easytrieve, COBOL, and Tivoli Storage Manager (TSM)., * Experience in Business Recovery/Disaster Recovery (DR) planning and execution.
 * Proven track record of cost-reduction through platform consolidation or "Mainframe-to-Cloud/Open-System" migrations.
 * Ability to mentor junior engineers and contractors during complex infrastructure shifts.

## Description

The Sr. z/OS Systems Engineer is responsible for the installation, maintenance, and optimization of the z/OS operating system and its associated subsystems. Unlike traditional storage-focused roles, this position emphasizes Middleware integration, Application Portability, and Modernization. You will be the primary technical lead for migrating legacy mainframe workloads to distributed platforms (Linux/AIX/Windows) and supporting high-availability messaging environments. Primary Responsibilities

 * Operating System Support: Install, maintain, and upgrade z/OS, DB2, CICS environments across multiple LPARs, including performing HCD changes for I/O subsystem migrations.
 * Workload Migration: Lead strategic projects to port legacy z/OS applications (CICS/DB2/WebSphere) to modern architectures like Microfocus, Tomcat, or SQL Server.
 * Database Collaboration: Assist DB2 DBAs with version upgrades (e.g., v11 to v12) and monitor Distributed Data Facility (DDF) activity.
 * Monitoring & Optimization: Replace and manage system monitoring tools (e.g., transitioning from Omegamon to ASG-TMON) to ensure 24/7 environment stability., * Operating System Support: Install, maintain, and upgrade z/OS, DB2, CICS environments across multiple LPARs, including performing HCD changes for I/O subsystem migrations.
 * Workload Migration: Lead strategic projects to port legacy z/OS applications (CICS/DB2/WebSphere) to modern architectures like Microfocus, Tomcat, or SQL Server.
 * Database Collaboration: Assist DB2 DBAs with version upgrades (e.g., v11 to v12) and monitor Distributed Data Facility (DDF) activity.
 * Monitoring & Optimization: Replace and manage system monitoring tools (e.g., transitioning from Omegamon to ASG-TMON) to ensure 24/7 environment stability.


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