Senior Mainframe z/OS Engineer — DR & On-Call Hybrid

Kyndryl; United States; Hybrid; USD 120,000 - 170,000; Full time

Job summary

Kyndryl is seeking a Mainframe z/OS System Programmer in the United States to maintain and modernize critical z/OS environments. You will install, configure, and support z/OS, apply maintenance, and participate in disaster recovery drills as part of a 24/7 on-call rotation.

In this role you will diagnose performance issues, coordinate with teams on modernization initiatives, and contribute to robust, scalable mainframe operations in a hybrid, client-focused environment.

Qualifications

• 10+ years of hands-on Mainframe z/OS system programming experience, including installation, configuration, maintenance and production support.
• Experience applying z/OS maintenance and patches, managing third-party software and supporting system reliability.
• Hands-on experience with SYSRES builds, PTF application, disaster recovery drills and license-key updates.
• Experience performing product maintenance, upgrades and compatibility checks, including work with z/OS 3.1 and IBM z16 environments.
• Proven ability to diagnose and resolve system failures, freezes, job abends and performance issues.
• Working knowledge of GDPS and disaster recovery approaches, including the flip‑and‑stay model.
• Experience contributing to mainframe migration or modernization initiatives and recommending system performance improvements.
• Ability to participate in a 24/7 on‑call rotation supporting production systems.

Responsibilities

• Run z/OS environments: Install, configure, maintain and support z/OS systems, applying maintenance and patches to keep environments reliable and current.
• Maintain the platform: Complete SYSRES builds, apply PTFs, update licence keys and manage third-party software and product maintenance.
• Find and fix: Diagnose system failures, freezes, job abends and other technical issues, identifying root causes and implementing appropriate resolutions.
• Optimise performance: Monitor system behaviour and recommend improvements that support performance, stability and efficient operation.
• Strengthen resilience: Support GDPS environments and disaster recovery drills, including flip-and-stay recovery approaches.
• Support modernisation: Contribute technical expertise to mainframe migration and modernisation initiatives, helping customers evolve and integrate their mainframe environments.
• Protect production: Participate in 24/7 on-call support and respond to system issues affecting production environments.

Skills

Mainframe z/OS

System programming

Disaster recovery

GDPS

Performance tuning

Patch management

z/OS upgrades

On-call support

Job description

Kyndryl is seeking a Mainframe z/OS System Programmer in the United States to maintain and modernize critical z/OS environments. You will install, configure, and support z/OS, apply maintenance, and participate in disaster recovery drills as part of a 24/7 on-call rotation.

In this role you will diagnose performance issues, coordinate with teams on modernization initiatives, and contribute to robust, scalable mainframe operations in a hybrid, client-focused environment.