Z/Os Systems Engineer

Role Summary

The Sr. z/OS Systems Engineer is responsible for the installation, maintenance, and optimization of the z/OS operating system and its associated subsystems. This position emphasizes Middleware integration, Application Portability, and Modernization. You will serve as 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, and 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 such as Microfocus, Tomcat, or SQL Server.

- Database Collaboration: Assist DB2 DBAs with version upgrades and monitor Distributed Data Facility (DDF) activity.

- Monitoring & Optimization: Manage system monitoring tools (e.g., transitioning from Omegamon to ASG-TMON) to ensure 24/7 environment stability.

Technical Requirements

- 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, 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).

Preferred Qualifications

- Experience in Business Recovery/Disaster Recovery (DR) planning and execution.

- Proven track record of cost reduction through platform consolidation or mainframe-to-cloud migrations.

- Ability to mentor junior engineers during complex infrastructure shifts.