Mainframe System Programmer

Atos

Mainframe System Programmer role at Atos supporting installation, maintenance, and administration of z/OS. Collaborating on system reliability, performance, and security in a remote environment.

Posted 4/15/2026full-timeRemote • 🇲🇽 MexicoJunior💰 MX$70,000 - MX$79,000 per monthWebsite

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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.

Benefits

Comp & perks

Health insurance
Flexible work arrangements
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

z/OSSMP/EJCLISPFREXXCLISTMVS tuningPARMLIBIPL supportJES2/JES3

Soft Skills

collaborationcommunicationproblem diagnosisservice improvement