Mainframe zOS Systems Administrator

Job description

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 Your Role As a System Administrator at Kyndryl, you’ll solve complex problems and identify potential future issues across the spectrum of platforms and services. You’ll be at the forefront of new technology and modernization, working with some of our biggest clients-which means some of the biggest in the world. What You Will Do Install, configure, maintain, and upgrade DB2 for z/OS environments, ensuring platform stability, performance, and availability. Plan and execute DB2 version migrations, maintenance activities, and recovery strategies, including SMP/E, PTF, and APAR implementations. Administer DB2 subsystems, DSNZPARM configurations, buffer pools, storage resources, catalogs, and directories. Monitor, analyze, and optimize DB2 performance through tuning of subsystem parameters, SQL access paths, buffer pools, and resource utilization. Design and support high-availability, disaster recovery, and data-sharing environments to meet business continuity and recovery objectives. Manage DB2 utilities including REORG, RUNSTATS, COPY, LOAD/UNLOAD, RECOVER, and REBUILD INDEX operations while ensuring optimal execution and reliability. Partner with security teams to implement DB2 security controls, authorization strategies, compliance requirements, and vulnerability remediation. Perform capacity planning, growth forecasting, and infrastructure optimization to support evolving business and application demands. Develop and enhance automation using REXX, JCL, and monitoring tools to improve operational efficiency and proactive system health management. Lead root cause analysis and resolution of critical incidents, acting as the highest level of technical escalation for complex DB2 issues. Collaborate with application development teams on SQL tuning, database design reviews, migrations, and onboarding of new workloads. Drive modernization initiatives including DB2 upgrades, DevOps integration, automation, observability enhancements, cloud connectivity, and mainframe transformation programs. Provide technical leadership, mentorship, operational governance, and strategic guidance to ensure a secure, highly available, and high-performing DB2 infrastructure. Your future at Kyndryl Every position at Kyndryl offers a way forward to grow your career, from Junior System Administrator to Architect. We have opportunities for Cloud Hyperscalers that you won’t find anywhere else, including hands-on experience, learning opportunities, and the chance to certify in all four major platforms. One of the benefits of Kyndryl is that we work with clients in a variety of industries, from banking to retail. Whether you want to broaden your knowledge base or narrow your scope and specialize in a specific sector, you can find your opportunity here. Who You Are You’re good at what you do and possess the required experience to prove it. However, equally as important – you have a growth mindset; keen to drive your own personal and professional development. You are customer-focused – someone who prioritizes customer success in their work. And finally, you’re open and borderless – naturally inclusive in how you work with others. Required Technical and Professional Expertise 8+ years of experience in Mainframe z/OS system programming, with extensive hands-on expertise in z/OS installation, configuration, maintenance, and support. Skills in applying patches, managing third-party software and ensuring system reliability. Hands-on expertise in SYSRES builds, applying PTFs, performing disaster recovery drills and updating license keys. Proficiency in product maintenance, upgrades and compatibility checks for z/OS 3.1 and IBM z16 hardware. Adept at troubleshooting any system failures, freeze, job abends and performance issues. Willingness to provide 24/7 oncall support to resolve any system issues. Working knowledge of mainframe GDPS. Good understanding of flip and stay disaster recovery model. Experience of working on many migration projects as part of mainframe modernization. Should provide recommendations on optimizing system performance. Preferred Technical and Professional Experience Experience in z/OS administration. Experience in mainframe modernization initiatives. Experience of supporting the IBM z16 and IBM z17 mainframe systems. Any leadership and mentoring experience will be an added plus. 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.