Role: Mainframe Performance & Capacity Engineer
Location: Atlanta, GA
Fulltime
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.