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 teams to ensure subsystem goals align with overall workload strategy.

Subsystem & Infrastructure Performance

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.
Work with Storage, DB2, CICS, MQ, and Sysplex teams to improve end‑to‑end throughput.

Coupling Facility & LPAR Optimization

Analyze and tune Coupling Facility (CF) performance, including structure sizing, rebuild behavior, and CF link optimization.
Optimize LPAR weights, capping strategies, HiperDispatch, and processor resource allocation across CPCs.
Evaluate shared vs. dedicated processor configurations for performance and cost efficiency.

Monitoring, Reporting & Automation

Develop automated dashboards and reports using SAS, MXG, Splunk, or custom scripts.
Monitor system KPIs—including CPU utilization, MSUs, RNI, DASD response, CF occupancy, and WLM goal achievement.
Automate repetitive performance tasks using REXX, SAS macros, or Splunk custom queries.

Incident, Problem & Change Management

Lead performance investigations for system slowdowns, spikes, delays, WLM issues, and CF bottlenecks.
Provide RCA and permanent fixes for chronic performance issues.
Lead performance testing for changes, upgrades, migrations, sysplex expansions, and new workload introductions.

Documentation & Collaboration

Create clear technical documentation, performance baselines, tuning guidelines, and capacity reports.
Collaborate with z/OS, Infrastructure, DB2, MQ, CICS, Storage, and Application teams to ensure holistic system performance.
Present performance insights to technical leadership and capacity steering groups.

Who You Are

Required Qualifications

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.

Preferred Skills

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.

Education & Certifications

Bachelor's degree in Computer Science, Engineering, or related discipline.
IBM certifications in performance, sysplex, or WLM are advantageous.
ITIL Foundation is preferred.

Being You

The Kyn in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don't meet every requirement, we encourage you to apply. We believe in growth, and we're excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging — being a valued, respected, trusted member of the team — is fundamental to our culture and fueling great experiences for our customers. This dedication to welcoming everyone into our company means that Kyndryl gives you the ability to thrive and contribute to our culture of empathy and shared success. That's The Kyndryl Way.

What You Can Expect

Your career with us isn't just a job—it's an adventure with purpose. We offer a dynamic, hybrid-friendly culture that supports your well-being and empowers you to grow. Our Be Well programs are thoughtfully designed to support your financial, mental, physical, and social health—because we know that when you feel your best, you do your best.

From your very first day, you'll dive into impactful work that powers the systems our customers rely on every day. You won't just contribute—you'll make a difference, tackling meaningful projects that sharpen your skills and fuel your growth.

We're here to champion your journey. With powerful tools to chart your career path, personalized development goals aligned with your ambitions, and continuous feedback to keep you inspired and on track, you'll have everything you need to thrive and evolve. You'll develop in-demand skills to grow your career and achieve your ambitions with access to cutting-edge learning opportunities—from certifications with Microsoft, Google, and Amazon to coaching and hands-on experiences. And through it all, you'll be part of a culture that values empathy, restless learning, and a devotion to shared success.

We want you to thrive here—and we're committed to helping you do just that. Ready to make an impact Join us and help shape what's next.

Get Referred!

If you know someone that works at Kyndryl, when asked How Did You Hear About Us during the application process, select Employee Referral and enter your contact's Kyndryl email address.

Mainframe Performance Engineer (System)