Job Title: Mainframe System Programmer Company: Atos Location: Mexico – Remote Job Type: Full-time Salary Range: MXN 70,000 – 79,000 gross monthly Role Overview 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 #J-18808-Ljbffr