Mainframe ZOS System Programmer

Install, configure, and support key subsystems: 

JES2/JES3 

TSO/E, ISPF 

USS (Unix System Services) 

RACF (in coordination with security teams) 

Work closely with DB2, CICS, IMS, MQ, and Storage teams for integration and support. 

Analyze system performance metrics and implement tuning improvements. 

Support capacity planning and resource optimization (CPU, memory, I/O). 

Evaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements). 

Diagnose and resolve system-related issues, including system abends and failures. 

Perform root cause analysis for outages and major incidents. 

Work with IBM and vendors on problem determination and fixes. 

Develop and maintain automation using tools such as: 

System REXX, CLIST 

SA z/OS, NetView 

Support job scheduling tools (e.g., CA7, Control-M where applicable). 

Support system-level security configurations aligned with RACF policies. 

Ensure compliance with audit, regulatory, and enterprise security standards. 

Assist in vulnerability remediation and patching activities. 

Execute changes through ITIL-based processes (ServiceNow or equivalent). 

Prepare implementation plans, backout procedures, and validation steps. 

Support weekend maintenance windows and IPL activities. 

Create and maintain technical documentation, including: 

System configurations 

Standard Operating Procedures (SOPs) 

Disaster Recovery plans