Mainframe Senior z/OS System Programmer

TL;DR

Mainframe Senior z/OS System Programmer: Maintaining and optimizing mission-critical z/OS operating systems and subsystems with an accent on high availability, disaster recovery, and complex troubleshooting. Focus on managing Sysplex environments, implementing hardware configurations, and leading technical projects to ensure system stability and performance.

Location: Hortolandia, São Paulo, Brazil (Hybrid)

Company

hirify.global is a global technology services provider that designs, builds, manages, and modernizes mission-critical technology systems.

What you will do

• Develop, test, and maintain z/OS operating systems and subsystem software.
• Manage Sysplex environments, Coupling Facility support, and High Availability configurations.
• Perform installations, upgrades, and maintenance for z/OS and multi-vendor ISV products.
• Troubleshoot complex system issues, including taking dumps and performing root cause analysis.
• Lead projects to implement new solutions and provide technical guidance to professional teams.
• Manage Hardware Configuration Definition (HCD) and IODF management tasks.

Requirements

• Strong experience with z/OS, SMP/E, z/OSMF, and IBM Mainframe environments.
• Proficiency in Sysplex management, Coupling Facility, and High Availability.
• Experience with HCD, IODF management, and GDPS for disaster recovery.
• Ability to troubleshoot complex OS issues and perform system maintenance.
• English proficiency: B2 level required for client and team communication.
• Must be based in or able to work from Hortolandia, Brazil.

Culture & Benefits

• Dynamic, hybrid-friendly work environment.
• Comprehensive Be Well programs supporting financial, mental, and physical health.
• Access to continuous learning and certifications with major hyperscalers.
• Culture focused on belonging, empathy, and shared success.
• Opportunities for career growth and hands-on experience with mission-critical systems.