Senior Mainframe Application Support 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
Your Role
As a Senior Mainframe Application Support Engineer 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.
There’s never a typical day as a Mainframe Application Support Engineer at Kyndryl, because no two projects are alike. You’ll be managing systems data for clients and providing day-to-day solutions and security compliance. You’ll oversee a queue of assignments and work directly with technicians, prioritizing tickets to deliver the best solutions to our clients.
What You Will DO
Provide L2/L3 production support for mainframe applications built on Natural and Adabas, ensuring high availability and operational stability. Monitor application performance, troubleshoot incidents, and resolve production issues within agreed SLA timelines. Perform root cause analysis of application failures and implement preventive solutions to minimize recurring issues. Support batch processing, online transactions, job scheduling, and production release activities across environments. Collaborate with business users, development teams, and infrastructure teams to drive timely issue resolution and service improvements. Maintain operational documentation, support change and release management processes, and ensure compliance with security, audit, and business continuity requirements.
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. You’ll also get the chance to share your expertise by recommending modernization options, identifying new business opportunities, and cultivating relationships with other teams and stakeholders. Does the work get challenging at times? Yes! But you’ll collaborate with a diverse group of talented people and gain invaluable management and organizational skills, which will come in handy as you move forward in your career.
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 Application Support with a focus on Natural and Adabas technologies. Proven experience working in IBM z/OS environments with solid knowledge of JCL, TSO/ISPF, SDSF, and mainframe utilities. Good understanding of CICS, VSAM, batch processing, job scheduling, and production support operations. Experience supporting mission-critical applications in a 24x7 production environment, including incident, problem, and change management processes. Hands-on experience with scheduling and monitoring tools such as CA-7, Control-M, OPC/TWS, or equivalent. Strong troubleshooting, root cause analysis, performance tuning, and data correction skills for Natural/Adabas applications. Experience with ServiceNow or other ITSM tools for incident and service request management. Excellent analytical, communication, and stakeholder management skills with the ability to work effectively across global teams.
Preferred Technical and Professional Experience
Familiarity with application deployment, release management, and environment migration activities. Knowledge of Adabas performance monitoring, database support fundamentals, and application optimization techniques. Exposure to ITIL-based service management practices and continuous service improvement initiatives. Experience participating in on-call production support, major incident management, and disaster recovery exercises. Understanding of automation, operational efficiency, and proactive monitoring practices within mainframe environments.
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.

Kyndryl is the world's largest provider of IT infrastructure services serving thousands of enterprise customers in more than 60 countries.

We design, build, manage and modernize the mission-critical information technology the world depends on every day. Our business quite literally powers the vital systems that run banks, stock markets, airlines, automotive and healthcare companies, governments and more.

Kyndryl is at the heart of progress — dedicated to helping companies and people grow strong. With state-of-the-art resources and Fortune 100 clients, every day is an opportunity to innovate, build new capabilities, new relationships, new processes, and new value. Our people are actively discovering, co-creating, and strengthening.