Jobs → Engineering → Mainframe Performance & Capacity Management Engineer

About the Role We are looking for a Mainframe Performance & Capacity Management Engineer to join our team. This role focuses on real-time performance monitoring, optimization, and capacity planning for z/OS mainframe systems. Key Responsibilities • Real-time z/OS mainframe performance monitoring and optimization • Capacity planning, workload forecasting, and resource utilization • Performance tuning across CPU, memory, DASD, WLM, and batch workloads • Analyze SMF/RMF data, identify bottlenecks, and resolve production issues • Develop performance reports, dashboards, and KPIs using Excel and PowerPoint • Collaborate with infrastructure, DevOps, operations, and application teams • Support SCRT reporting and DevOps-based tooling migration Requirements • 10+ years of mainframe systems experience • Strong expertise in z/OS, multi-LPAR, and Parallel Sysplex environments • Hands-on experience with RMF, SMF, WLM, MICS, and SmartIS • Strong knowledge of JCL, DB2, and performance tuning • Experience resolving real-time performance issues using WLM and batch initiators • Advanced Excel skills, including PivotTables, VLOOKUP, and PowerPivot • Strong analytical, troubleshooting, and communication skills Good to Have • REXX/Python • IBM SCRT Reporting • DevOps experience Important Note: Candidates must have experience working with a large, well-known American company. Financial services experience is not required.