Mainframe Infrastructure Engineer; Hybrid

Job Overview

Hands‑on Mainframe Storage Engineer responsible for stable operations, incident/problem/change management, capacity/performance tuning, and automation. Works closely with application teams to keep mission‑critical workloads running reliably and securely. This role requires project‑based subject‑matter expertise in all things infrastructure.

• Platform & Infrastructure Operations
  • Administer DFSMS (ACS routines, storage groups/classes), DFSMShsm (HSM policies, space management, migration/recall), and Catalog/ICF (IDCAMS).
  • Manage DASD and tape subsystems (e.g., DS8000, TS7700), volumes, VTOCs, data sets, and replication.
  • Partner with backup/recovery teams on policy, Flash Copy/Snap, DR readiness, and test execution.
• Reliability, Security & Compliance
  • Implement and maintain RACF/ACF2/Top Secret controls; support audits and compliance (SOX, PCI, ISO, etc.).
  • Participate in BCP/DR planning, testing, and documentation.
  • Apply SRE/operational excellence practices – error budgets, toil reduction, problem elimination, and automation‑first mindset.
• ITSM & Change Management
  • Drive incident, problem, and change processes in Service Now: root cause analysis, post‑incident reviews, and controlled deployments.
  • Author and maintain runbooks, SOPs, architecture diagrams, and knowledge articles.

• Required Qualifications
  • 6+ years in mainframe (z/OS) infrastructure or production support roles.
  • Strong hands‑on knowledge of z/OS, JES2/JES3, TSO/ISPF, SDSF, USS/OMVS, SMP/E.
  • Storage fundamentals: DFSMS, DFSMShsm, ICF catalog/IDCAMS, DASD/tape operations, space/VTOC management.
  • Proficiency with monitoring and performance analysis (RMF/SMF, OMEGAMON, or similar).
  • Solid understanding of ITIL processes and experience using an ITSM tool (preferably Service Now) for incident/problem/change.
  • Strong analytical, communication, and stakeholder management skills; ability to work in a follow‑the‑sun/on‑call support model.
• Preferred qualifications
  • Experience with Parallel Sysplex, GDPS, XCF, and high‑availability designs.
  • Advanced tuning skills for DB2 buffer pools, CICS regions, IMS databases, MQ channels/queues.
  • Knowledge of networking on z/OS (TCP/IP stacks, VTAM/SNA, Enterprise Extender).
  • Scripting/programming: REXX, Assembler basics, COBOL reading, Python on USS.
  • Experience with capacity planning and cost optimization (MSUs, WLM policies).
  • Background in regulated/enterprise environments (financial services, government, healthcare, retail).

• OS & Core: z/OS, JES2/JES3, WLM, USS, TSO/ISPF, SDSF, SMP/E, IPCS
• Subsystems: DB2 for z/OS, CICS TS, IMS DB/TM, IBM MQ
• Scheduling: Control‑M, CA‑7, ESP/Autosys (or similar)
• Monitoring: RMF/SMF, OMEGAMON, SYSVIEW, Mainview, Splunk/ELK (if integrated)
• Storage: DFSMS, DFSMShsm, ICF Catalog/IDCAMS, DS8000, TS7700
• Security: RACF/ACF2/Top Secret, z/OS RACF panels, auditing tools
• ITSM: Service Now (Inc/Prob/Change/CMDB)
• Automation/Dev: REXX, JCL, ISPF dialogs, USS shell, Zowe/Ansible (nice to have)

The compensation range for this position in the US is $79,920 to $152,160 based on a full‑time schedule. Compensation may vary depending on geography, job‑related skills, and experience. Candidates may receive a discretionary annual bonus and a comprehensive benefits package, including medical and dental coverage, disability, retirement benefits, paid leave, and paid time off.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.