zOS Systems Engineer

zOS Systems EngineerMalvern, PA - HYBRIDRole SummaryThe 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 ResponsibilitiesOperating 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.Technical RequirementsMainframe 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) .Preferred QualificationsExperience 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.