NTT DATA - Mainframe System Administrator at NTT DATA

Functie NTT DATA - Mainframe System Administrator
Geplaatst 24 Jan 2026
Verlopen 23 Feb 2026
Bedrijf NTT DATA
Locatie Brussel | BE
Dienstverband Full Time

Functieomschrijving:

Laatste vacature-informatie van NTT DATA voor de functie van NTT DATA - Mainframe System Administrator. If the NTT DATA - Mainframe System Administrator vacature in Brussel overeenkomt met jouw kwalificaties, stuur dan je meest recente sollicitatie of CV rechtstreeks via het bijgewerkte Jobkos vacatureportaal.

Houd er rekening mee dat solliciteren niet altijd eenvoudig is, aangezien kandidaten aan bepaalde eisen van het bedrijf moeten voldoen. We hopen dat de kans bij NTT DATA voor de functie van NTT DATA - Mainframe System Administrator hieronder matcht met jouw profiel.



NTT Data is currently looking for a Mainframe System Administrator for one of our clients in the insurance sector based in Brussels. The role is performed in a hybrid role.


As a Mainframe System Administrator, you will be responsible for managing, maintaining, and optimizing our Mainframe environment. You will ensure the stability, security, and performance of critical business systems that are essential for our daily operations. Additionally, you will plan and oversee the system changes executed by our management partner.








Key responsibilities



System Administration: Oversee the installation, configuration, and maintenance of Mainframe systems (z/OS, MVS), primarily focusing on planning, coordinating, testing, and monitoring, as installations are carried out by our management partner.

Performance Monitoring: Monitor system performance and optimize resources.

Backup & Recovery: Implement and manage backup and disaster recovery procedures.

Security Management: Manage access rights and security protocols, assist with user management.

Troubleshooting: Analyze and resolve technical issues.Support: Provide advice and assistance.

Capacity Planning: Monitor system capacity and advise on expansions.

Documentation: Maintain technical documentation and procedures.

24/7 Support: Participate in on-call duties for critical incidents.






Your profile



Minimum of 5-8 years of experience with Mainframe systems (IBM z/OS).

Bachelor's or Master's degree in Computer Science, Technical Informatics, or a related field.

Relevant certifications (IBM, Mainframe) are a plus.

Knowledge of JCL, Cobol, DB2, CICS, IMS, RACF, Sclm.

Experience with system management tools (TSO/ISPF, SDSF).

Understanding of network technologies and protocols.

Analytical thinking and problem-solving skills.

Ability to work under pressure and attention to detail.

Strong communication skills.

Team player with an independent work attitude.

Languages : You are fluent in English. Dutch and French are an advantage.






NTT Data - a part of NTT Group - is a trusted global innovator of IT and business services headquartered in Tokyo. NTT Data has been awarded Top Employer 2024 regional certification in Asia Pacific, Europe, Latin America, and North America including 29 countries. We help clients transform through consulting, industry solutions, business process services, IT modernization and managed services. NTT Data enables clients, as well as society, to move confidently into the digital future. We are committed to our clients' long-term success and combine global reach with local client attention to serve them in over 50 countries. Visit us at nttdata.com

Job Info:

  • Bedrijf: NTT DATA
  • Functie: NTT DATA - Mainframe System Administrator
  • Werkplek: Brussel
  • Land: BE

Hoe te solliciteren:

Na het lezen en begrijpen van de criteria en minimale kwalificatie-eisen uitgelegd in de vacature-informatie NTT DATA - Mainframe System Administrator at the office Brussel hierboven, voltooi onmiddellijk de sollicitatieformulieren zoals een sollicitatiebrief, CV, kopie van diploma, cijferlijst en andere bijlagen. Verstuur via de link 'Volgende Pagina' hieronder.

DEZE VACATURE IS VERLOPEN (Meer dan 30 dagen geleden).
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