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 Application Performance Analysis Perform detailed application performance diagnostics using: Strobe (CPU, I/O, storage path analysis) DB2 Visualizer (SQL activity, statement-level cost analysis) Exception reporting to identify abnormal CPU, I/O, locking, and DB2 behavior. Analyze execution profiles to isolate code‑level inefficiencies , high‑cost SQL, and suboptimal DB2 access paths. SQL, DB2 & Subsystem Tuning Analyze SQL statements for performance, buffer pool usage, lock/latch contention, and DB2 processing overhead. Recommend improvements in: Access paths and indexing SQL rewrites DB2 statistics health Bind‑package tuning Collaborate with DB2 DBAs to validate performance improvements and test SQL fixes. Code-Level Application Optimization Review and tune applications written in COBOL, Java, Python, and Go running in the z/OS environment. Identify code inefficiencies, excessive loops, unnecessary I/O, poor transaction flows, or inefficient serialization mechanisms. Support teams in optimizing batch and online workloads for CPU/MSU reduction and throughput improvement. z/OS Runtime Analysis Diagnose issues related to: CPU contention Memory growth or leakage VSAM/DB2 I/O bottlenecks Thread/transaction delays Program structure overhead Use RMF/SMF metrics in conjunction with Strobe data to correlate system conditions with application behavior. Parallel Sysplex Application Behavior Analyze and tune application performance in Parallel Sys...