Mainframe Systems Programmer - CICS and MQ

Atos SE; Ciudad de México; Presencial; MXN 1,216,000 - 1,391,000; Jornada completa

Descripción de la vacante

A global leader in digital transformation, based in Mexico City, seeks a Mainframe Systems Programmer specializing in CICS and MQ. The ideal candidate will manage the installation, configuration, and debugging of Mainframe CICS/Transaction Server software. Responsibilities include collaborating with technical teams and providing expert support. A Bachelor’s degree in Computer Science and deep knowledge of CICS Internals are required. The salary range for this role is between $70K and $80K, with opportunities for continuous service improvement.

Formación

• Deep knowledge and hands‑on experience with CICS.
• Experience with installation, maintenance, and debugging of CICS software.
• Proficiency with monitoring/automation tools like Tivoli Omegamon.

Responsabilidades

• Install, update, maintain, and debug Mainframe CICS software.
• Support testing, implementation, and upgrades of systems.
• Provide expert on‑call support as part of a scheduled rotation.

Conocimientos

CICS Internals

CICS performance and tuning

CICS transaction debugging

WebSphere/MQ for z/OS

JCL

TSO/E

Problem diagnosis

Analytical skills

Educación

Bachelor’s degree in Computer Science

Descripción del empleo

Mainframe Systems Programmer - CICS and MQ

Publication Date: Jan 29, 2026

Ref. No: 542494

Location: Mexico City, MX

Atos Group is a global leader in digital transformation with c. 67,000 employees and annual revenue of c. €10 billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE is listed on Euronext Paris.

The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

Company: Atos

Salary Range: 70K-80K

This role is responsible for the installation, configuration, administration, maintenance, and debugging of Mainframe CICS/Transaction Server software and tools, as well as WebSphere/MQ Series on z/OS. The Senior Systems Programmer ensures that platform changes are executed in compliance with company processes and security standards while contributing to system improvements, product upgrades, and operational stability. This position collaborates closely with technical teams, management, and clients to enhance service delivery and participates in an On‑Call rotation to provide expert-level support.

Key Responsibilities

• Install, update, maintain, and debug Mainframe CICS/Transaction Server software and tools, along with WebSphere/MQ Series for z/OS.
• Perform system changes within established company regulations, procedures, and corporate security standards.
• Support testing, implementation, and installation of new or enhanced systems and product upgrades.
• Attend meetings and coordinate with management, infrastructure teams, and clients to drive continuous service improvement.
• Diagnose and resolve complex CICS and MQ issues, including dump analysis, trace interpretation, performance optimization, and transaction troubleshooting.
• Provide expert on‑call support as part of a scheduled rotation.

Must‑have Qualifications / Skills

CICS Expertise

• Deep knowledge and hands‑on experience with CICS Internals, CICS performance and tuning, CICS transaction debugging, and reading CICS traces.
• Experience with installation, maintenance, administration, configuration, and problem diagnosis of CICS/Transaction Server software and tools.
• Proficiency with CICS Universal Client or CTG, CAFC, CEMT Batch, EXCI, and CICS exits (Assembly Language).
• Experience with XPEDITER/CICS or INTERTEST/CICS for debugging.
• Experience with monitoring/automation tools such as Tivoli Omegamon/CICS XE or TMON.
• Experience with VPS/DRS Printing Solutions.
• Understanding of SMF/RMF usage in CICS environments.

MQ Expertise

• Installation, configuration, maintenance, and debugging of WebSphere/MQ for z/OS.
• Strong knowledge of MQ Series Internals, MQ clustering, MQ WAS, and WBI.Experience with MQ performance and tuning.Experience with message‑oriented middleware and file transfer solutions.Mainframe & System‑Level SkillsExperience with JES2/JES3, JCL, TSO/E, ISPF, SMP/E.Knowledge of IPCS for problem diagnosis.Understanding of UNIX System Services, HFS, and DFSMS storage concepts.Experience with VSAM file systems.Knowledge of SNA and TCP/IP networking basics.Knowledge of SAF and security interfaces for Top Secret, ACF2, or RACF.Assembly language experience for CICS & MQ exits.

  Education and Experience

  • Bachelor’s degree or technical certification in Computer Science, or equivalent experience as a CICS/Transaction Server Systems Programmer.
  • Verbal and written proficiency in English.

  Soft Skills

  • Excellent verbal and written communication for documentation, troubleshooting, and collaboration.
  • Ability to work under pressure in complex, high‑availability mainframe environments.
  • Strong analytical and problem‑solving abilities.
  • Collaborative team approach when working with technical teams, management, and clients.
  • Proactive mindset toward service improvement and continuous learning.

  Good‑to‑have Qualifications / Skills

  • Experience with HTTP, JAVA J2EE, C#, ASP.NET, HTML, REXX, COBOL, DB2, ADABAS, IDMS.
  • Additional exposure to UNIX, JAVA, WebSphere, CICSplex, or MQ Series technologies
  • #LI_MAX

  Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

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