Senior z/OS Mainframe Systems Programmer

Atos SE; Ciudad de México; On-site; MXN 500,000 - 750,000; Full time

Job summary

Atos is seeking a Mainframe System Programmer to support the installation, maintenance, and administration of the z/OS operating system in a global, collaborative environment. The role focuses on system reliability, performance, and security while enabling continuous improvement initiatives.

You will install and upgrade z/OS, apply SMP/E, manage JES2/JES3, maintain TSO/ISPF, and work with ISV products such as CA1, CA7, CA11, Syncsort, and File-Aid.

Qualifications

• Proven experience in z/OS installation, maintenance, and administration.
• Strong SMP/E knowledge and mainframe tooling.
• Proficiency in JCL, ISPF, REXX, CLIST.
• Experience with ISV products such as CA1, CA7, CA11, Syncsort and File-Aid.
• Verbal and written proficiency in English.

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.

Skills

z/OS installation & maintenance

SMP/E

JCL

ISPF

REXX

CLIST

English proficiency

Education

Bachelor's degree in Computer Science or related field

Relevant technical certification

Tools

SMP/E

CA1

CA7

CA11

Syncsort

File-Aid

Mainview

System Automation

ASG

BMC products

Job description

Atos is seeking a Mainframe System Programmer to support the installation, maintenance, and administration of the z/OS operating system in a global, collaborative environment. The role focuses on system reliability, performance, and security while enabling continuous improvement initiatives.

You will install and upgrade z/OS, apply SMP/E, manage JES2/JES3, maintain TSO/ISPF, and work with ISV products such as CA1, CA7, CA11, Syncsort, and File-Aid.