Mainframe System Programmer

Job Name: Mainframe System Programmer - 545556

Company: Atos

Location: Mexico – Remote

Lunes – Viernes

On Call availability 24/7 for emergencies

Job Type: Full-time

Role Overview:

The Mainframe System Programmer is responsible for the installation, maintenance, problem diagnosis, and administration of the z/OS Mainframe operating system. This role ensures system stability, performance, and compliance with Atos security standards while supporting continuous service improvement. The position requires close collaboration with internal teams and includes participation in an on-call rotation.

Key Responsibilities:

• Install, upgrade, and administer the z/OS operating system, including RSU maintenance
• Perform system changes in accordance with company regulations, security standards, and internal controls
• Provide IPL support and resolve JES2/JES3 issues
• Maintain TSO/ISPF environments, including CLIST, REXX, and PROC maintenance
• Perform MVS tuning and manage PARMLIB
• Create and manage LPARs
• Execute SMP/E activities including Receive, Apply, USERMOD, and exit management
• Install and upgrade ISV products such as CA1, CA7, CA11, Syncsort, File-Aid, Abend-Aid, Mainview, System Automation, ASG, and BMC products
• Assist with testing, implementation, and installation of new or enhanced systems and product upgrades
• Attend meetings and collaborate with management, team members, and clients to continuously improve services
• Participate in on-call rotation as required

Must-have Qualifications / Skills:

• Strong experience in installation, maintenance, problem diagnosis, and administration of z/OS
• Solid knowledge of SMP/E
• Proficiency in JCL, ISPF, REXX, CLIST, and SMP/E
• Experience working with multiple mainframe products including security managers, resource managers, performance tools, storage managers, schedulers, application tools, and hardware managers

Educational Background:

• Bachelor’s degree in Computer Science or a related field, or a relevant technical certification

Professional Experience:

• Hands-on experience supporting and administering enterprise-scale mainframe environments
• Experience performing z/OS installations and upgrades

Soft Skills:

• Strong verbal and written communication skills in English
• Ability to collaborate effectively with cross-functional and remote teams
• Proactive problem-solving mindset and attention to detail

Good-to-have Qualifications / Skills:

• Experience supporting diverse ISV tools and utilities in complex mainframe environments
• Prior experience in large-scale or regulated IT environments
• System-level experience with CICS, IMS, DB2, Communications, and MQ; candidates with this experience are highly desirable and will be prioritized for interview

Please send you Resume to Ver el correo electrónico en click.appcast.io, provide the best number to reach you and your available time slots and I will schedule a follow up call via phone accordingly.

Kind Regards

Juan Estrada