Mainframe System Programmer

Atos is looking for a Mainframe System Programmer to support the installation, maintenance, and administration of the z/OS Mainframe operating system. This role plays a key part in ensuring system reliability, performance, and security while supporting continuous improvement initiatives in a global and collaborative environment.

Key Responsibilities

• Install, upgrade, and administer the z/OS operating system, including RSU maintenance.
• Perform system changes in line with Atos 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.
• Support testing, implementation, and deployment of new or improved systems and product upgrades.
• Collaborate with internal teams, management, and clients to drive continuous service improvement.
• Participate in on-call rotation as required.

Must-have Qualifications / Skills

• Proven experience in installation, maintenance, problem diagnosis, and administration of z/OS.
• Strong working knowledge of SMP/E.
• Proficiency in JCL, ISPF, REXX, CLIST, and SMP/E.
• Experience with multiple mainframe products including security, resource, performance, storage, scheduling, application, and hardware management tools.
• Verbal and written proficiency in English.

Educational Background

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

Professional Experience

• Experience supporting enterprise mainframe environments.
• Hands-on involvement in z/OS installations and upgrades.

Soft Skills

• Strong communication and stakeholder management skills.
• Ability to work independently and collaboratively in a remote environment.
• Analytical mindset with a focus on system stability and service quality.

Good-to-have Qualifications / Skills

• Experience with multiple ISV products across the mainframe ecosystem.
• Familiarity with large, complex, or global IT service environments.
• System-level experience with CICS, IMS, DB2, Communications, and MQ is a strong plus; candidates with this experience will be prioritized for interview.

Atos is committed to diversity and inclusion and to creating a fair work environment.