Senior Mainframe Systems Engineer – z/OS

Dearborn, MI  (Hybrid)

Full Time

Overview / Summary

We are seeking a Senior Mainframe Systems Engineer with extensive IT and system programming experience to support enterprise mainframe environments. This role is responsible for designing, implementing, maintaining, troubleshooting, and supporting z/OS systems, software, hardware configurations, and related infrastructure.

The position will support system programming activities, infrastructure solutions, monitoring, capacity planning, disaster recovery, software implementation, and customer support across enterprise environments.

Key Responsibilities

• Design, operate, and maintain enterprise servers, including IBM mainframe systems, high-performance computing systems, and hybrid/cloud environments.
• Research, design, implement, and maintain complex infrastructure solutions supporting internal customer needs.
• Design and configure secure virtualized environments aligned with enterprise architecture requirements.
• Utilize existing tools or assist in developing custom monitoring solutions to ensure systems are properly configured, efficient, and secure.
• Monitor CPU, memory, storage, and network resources to ensure effective utilization and appropriate resource management.
• Resolve infrastructure bottlenecks and plan for future capacity requirements based on resource usage trends.
• Advise enterprise architecture teams on resource usage trends for future infrastructure planning.
• Install, customize, test, implement, document, and support independent software vendor (ISV) products.
• Work with software vendors to troubleshoot and resolve product-related problems.
• Code in Assembler to develop, test, implement, document, and support system modifications and MVS/JES exits.
• Analyze, debug, and resolve z/OS software problems.
• Support z/OS UNIX System Services (USS) and WebSphere environments.
• Work with IBM technical support to resolve z/OS software and hardware issues.
• Create and analyze RACF profiles.
• Provide system programming support for the installation and upgrade of mainframe hardware configurations.
• Provide support for Disaster Recovery planning and testing, including off-hours support.
• Participate in rotational 24x7 support for software-related issues.
• Provide Level 1, Level 2, and Level 3 customer support for software and hardware-related trouble tickets.
• Perform other duties as assigned.

Required Qualifications

• Bachelor's degree.
• 10+ years of IT experience.
• 8+ years of development experience.
• Practical experience in two coding languages or advanced practical experience in one coding language.
• Experience with mainframe systems.
• Experience with z/OS.
• Eight or more years of system programming experience, including:
• Dump analysis
• SMP/E
• SMF
• USS
• Omegamon
• MVS and JES exits
• Problem analysis and resolution
• Working knowledge of z/OS internals in JES2 or JES3 environments.
• Experience planning, customizing, testing, and providing ongoing support for Independent Software Vendor (ISV) products, including CA Technologies, BMC, SAS, and IBM products.
• Knowledge and experience with corporate and group security and control policies, procedures, and standards.
• Experience supporting Disaster Recovery for z/OS environments.
• Working knowledge of ISPF, TSO, JCL, and IBM utilities.
• Strong verbal and written communication skills.
• Strong analytical and problem-solving skills.
• Proficiency with Microsoft Word and Excel.
• Willingness and ability to work overtime, including all shifts, weekends, and holidays.

Preferred Qualifications

• Proficiency in Assembler, REXX, CLIST, and SAS coding.
• Experience with Access, PowerPoint, and Microsoft Project for project administration.
• Experience with RACF.