z/OS Systems Engineer

Location: Malvern, PA

Salary: Depends on Experience

Description:

Summary

The Mainframe Systems Engineer is responsible for managing, configuring, and maintaining enterprise mainframe environments to ensure high availability, performance, and reliability. This role requires deep expertise in z/OS systems programming, strong troubleshooting skills, and the ability to lead technical upgrades, integrations, and system-wide enhancements. On-call support is required.

Responsibilities

Administer and support mainframe environments including z/OS, OS/390, MVS, and zVSE.

Design and manage mainframe hardware configurations such as FICON, ESCON, OSA, and LCSS.

Utilize IOCP, HCD, HCM, and HMC for UNIPLEX, LPAR, and SYSPLEX configuration and management.

Perform SMP/E installation, maintenance, upgrades, and customization for operating system components.

Plan and execute hardware and software upgrades, configuration changes, and environment refreshes.

Automate operational processes and support capacity planning efforts.

Install new system components, run installation jobs and scripts, and perform installation-specific customizations.

Conduct integration testing to validate compatibility with existing applications, tools, and procedures.

Tune system performance to meet service levels across platforms and enterprise workloads.

Provide Tier 3 operational support, diagnosing and resolving complex hardware, software, and system outages.

Monitor automated alerts, respond to system-level events, and recommend improvements to monitoring tools.

Coordinate issue resolution with IT teams across platforms, ensuring alignment and timely communication.

Install, test, and evaluate vendor software, patches, and upgrades; identify workarounds and product issues.

Train and mentor junior system engineers, review their work, and contribute to developing engineering standards.

Create and update documentation, including policies, procedures, and change records in ServiceNow (Incident, Problem, and Change Management).

Analyze system performance, identify trends, and recommend opportunities for automation and optimization.

Participate in change management processes, provide technical input, and present system metrics and project updates. Qualifications

Extensive experience in mainframe systems programming and enterprise-scale mainframe environments.

Proficiency with z/OS, OS/390, MVS, zVSE, and associated hardware and configuration tools.

Deep knowledge of SMP/E, LPARs, SYSPLEX, and mainframe hardware infrastructure.

Strong troubleshooting and Tier 3 support experience in complex, multi-platform environments.

Experience creating, tuning, and maintaining highly available mainframe systems.

Strong communication skills with ability to train staff, mentor team members, and collaborate across IT organizations.

Ability to participate in 24/7 on-call rotation.

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Contact:

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