## Key Responsibilities
- Well-versed in zOSMF workflow-based Installation/Upgrade & Maintenance.
- Own end-to-end installation, upgrade, and SMP/E maintenance of z/OS and its core subsystems (JES2/JES3, RACF/ACF2, Language Environment, USS, HCD/HCM).
- Plan and execute installation, upgrade, and ongoing maintenance of ISV (Broadcom, BMC, Rocket & others) software products running on z/OS.
- Lead technical migration projects between competing vendor products (e.g., CA7 to IBM Workload Scheduler, ACF2 to RACF, or equivalent scheduler/security transitions), including gap analysis, conversion tooling, parallel run, and cutover.
- Design, implement, and tune Parallel Sysplex environments — XCF/XES, GRS, Coupling Facility structures, CFRM policies, VSAM RLS.
- Implement and support GDPS configurations (GDPS/PPRC, GDPS/GM, GDPS/MTMM, or GDPS/MGM) for continuous availability and disaster recovery.
- Support integration of the z/OS environment with modernization tooling — Zowe, REST/API gateways, CI/CD pipelines, Github, and hybrid cloud orchestration layers.
- Perform capacity and performance analysis using SMF/RMF data, zPCR, and WLM policy tuning in coordination with capacity planning teams.
- Perform Proof-of-concept (POC) on Sandbox LPAR to build & test the use-cases using different vendor products which are found promising and establish the documentation proof of benefits realization after POC completion.
- Own security and audit posture of the z/OS environment, including STIG compliance, access control reviews, and vulnerability remediation.
- Provide senior-level incident and problem management support for z/OS-level outages, including root-cause analysis and permanent fix implementation.
- Mentor junior systems programmers and contribute to runbooks, knowledge bases, and standard operating procedures for the COE.