Mainframe System Administrator

Mainframe System Administrator

NTT DATA

Brussels, Belgium

AI Summary

The Mainframe System Administrator at NTT DATA is responsible for managing and optimizing the mainframe environment, ensuring stability and performance of critical systems. Candidates should have a Bachelor’s or Master’s degree in Computer Science or a related field, with at least 5-8 years of experience in mainframe systems. Proficiency in IBM z/OS, JCL, COBOL, and related technologies is essential. Strong analytical and problem-solving skills, along with effective communication abilities, are required. The role includes responsibilities such as system administration, performance monitoring, and disaster recovery management.Your 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

Technical Skills:

• Minimum of 5-8 years of experience with mainframe systems (IBM z/OS);
• Knowledge of JCL, COBOL, DB2, CICS, IMS, RACF, SCLM;
• Experience with system management tools (TSO/ISPF, SDSF);
• Understanding of network technologies and protocols.

Educational Requirements:

• Bachelor’s or Master’s degree in Computer Science, Technical Informatics, or a related field;
• Relevant certifications (IBM, mainframe) are a plus.

Soft Skills:

• 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;
• Proficiency in English is mandatory, Dutch and French is an advantage.