Jobs → Engineering → Mainframe Performance & Capacity Management Engineer

About the Role We are looking for an experienced Mainframe Performance & Capacity Management Engineer to optimize performance, manage capacity, and ensure the reliability of mission-critical z/OS environments. Key Responsibilities • Monitor and optimize z/OS performance across CPU, memory, DASD, and WLM workloads • Analyze SMF/RMF data to identify bottlenecks, anomalies, and performance trends • Perform real-time troubleshooting and performance tuning using WLM and batch initiators • Drive capacity planning, workload forecasting, infrastructure sizing, and resource optimization • Develop performance dashboards, reports, and actionable insights using Excel and PowerPoint • Collaborate with infrastructure, operations, DevOps, and application teams Requirements • 13+ years of mainframe systems experience in large-scale z/OS, multi-LPAR, and Parallel Sysplex environments • Strong expertise in SMF/RMF, WLM, and mainframe performance tuning • Proficiency in JCL and DB2 • Experience with RMF, SmartIS, MICS, or similar monitoring and performance tools • Strong analytical skills and advanced Excel reporting (Pivot Tables, VLOOKUP, PowerPivot) • Basic understanding of PR/SM • Excellent communication, problem-solving, and stakeholder management skills Good to Have • REXX/Python • IBM SCRT reporting • MICS reporting • DevOps experience