Mainframe Performance Engineer

Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people—Kyndryls—that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role Key Responsibilities Performance Engineering & System Tuning Analyze and optimize performance across large z/OS Parallel Sysplex environments, ensuring SLA adherence and efficient resource utilization. Conduct end‑to‑end performance tuning across CPU, memory, I/O, CF links/structures, WLM goals, and subsystem interactions. Tune parameters for key z/OS components (e.g., JES2, TCP/IP stack, catalogs, VSAM structures, I/O paths, buffer pools, dispatching). Capacity Planning & Forecasting Perform comprehensive capacity planning for z/OS, Sysplex, LPARs, CF structures, and workload growth. Analyze system trends using SMF/RMF data, modeling tools, SAS/MXG, and Splunk dashboards. Provide quarterly and annual capacity forecasts with actionable recommendations for upgrades, reallocations, and optimization. SMF/RMF Expertise Collect, process, and analyze SMF and RMF data for CPU utilization, DASD performance, CF structures, network stack behavior, and workload throughput. Create custom reports using SAS , MXG , and integrate data pipelines into Splunk for visualization and operational intelligence. Interpret RMF Monitor I/III data and provide tuning recommendations. WLM Policy Management Design, maintain, and tune WLM policies (goal mode) across multiple LPARs and Sysplex environments. Analyze workload behavior and adjust service classes, report classes, and importance levels to meet business priorities. Coordinate with DB2, CICS, MQ, and batch t...