Mainframe Performance & Capacity Engineer

Job Description

Must Have Technical/Functional Skills
• Proven experience in mainframe performance monitoring, observability, capacity management, and data analysis
• Proven experience resolving systems performance problems in real-time via adjustments to WLM and batch initiators
• Proficiency in REXX/Python, Job Control Language (JCL) & DB2
• Strong understanding of Batch Processing and Job Scheduling
• Deep expertise with SMF/RMF data, WLM service definitions, and z/OS workload behavior

Roles & Responsibilities
• Lead performance and capacity management initiatives across complex IBM z/OS environments.
• Monitor real-time z/OS system health and performance across CPU, memory, DASD, and WLM-managed workloads
• Advanced knowledge of IBM zEnterprise hardware, RMF, SMF, SAS, MXG and related tools
• Experience with SYSPLEX design, WLM policy tuning, and PR/SM optimization of GP & zIIP configurations
• Collect and analyze system performance data to generate reports and dashboards
• Develop and implement performance tuning strategies by recommending changes to service definitions, dispatching priorities, and workload placement
• Contribute to capacity planning by forecasting and modeling workload resource demand & capacity requirements
• Support cost modeling, vendor reporting (SCRT), infrastructure sizing and resource optimization efforts
• Participate in on-call rotation for 24/7 support of critical systems.

Salary Range-$100,000-$130,000 a year

Qualifications: BACHELOR OF COMPUTER SCIENCE