Kyndryl

Mainframe Performance Engineer

Kyndryl

full-time

Posted on:

Location Type: Hybrid

Location: Bangalore • India

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Job Level

SeniorLead

Tech Stack

AnsibleSplunkTCP/IP

About the role

  • 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).
  • 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.
  • 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.
  • Design, maintain, and tune WLM policies (goal mode) across multiple LPARs and Sysplex environments.
  • Evaluate and tune performance of z/OS subsystems including DB2, CICS, MQ, BFS, TCP/IP stack, and JES2 workloads.
  • Analyze interactions between workloads to reduce contention, bottlenecks, and queuing delays.
  • Analyze and tune Coupling Facility (CF) performance, including structure sizing, rebuild behavior, and CF link optimization.
  • Develop automated dashboards and reports using SAS, MXG, Splunk, or custom scripts.
  • Lead performance investigations for system slowdowns, spikes, delays, WLM issues, and CF bottlenecks.
  • Create clear technical documentation, performance baselines, tuning guidelines, and capacity reports.

Requirements

  • 12+ years as a Mainframe Performance Engineer
  • Deep experience with: z/OS Parallel Sysplex tuning
  • WLM policy design and optimization
  • SMF/RMF analysis (Monitor I, III, OMEGAMON/MVS optional)
  • Coupling Facility performance analysis
  • LPAR weight/capping, HiperDispatch, PR/SM
  • Strong hands‑on experience with SAS, MXG, and Splunk reporting.
  • Strong understanding of subsystem performance interactions (DB2, CICS, MQ, batch).
  • Proficiency with JCL, REXX, ISPF, SDSF, and z/OS utilities.
  • Experience with IBM Capacity Management Console (CMC), BMC or Broadcom performance tools.
  • Exposure to STSM, zPCR, zBNA, or IBM Workload Simulation tools.
  • Knowledge of container pricing, tailored fit pricing, and MSU optimization.
  • Familiarity with automation via Ansible for z/OS or Zowe CLI.
Benefits
  • Flexible work arrangements
  • Professional development opportunities
  • Be Well programs for financial, mental, physical, and social health
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
z/OS Parallel Sysplex tuningWLM policy designSMF analysisRMF analysisCoupling Facility performance analysisLPAR weight/cappingSASMXGSplunkJCL