Senior Infrastructure Administrator (mwd)

The Senior Infrastructure Engineer is responsible for the design implementation administration and continuous improvement of the companys IT infrastructure.

This role ensures the availability security and performance of server and cloud environments supporting the operational needs of a telecom and networking organization.

The position covers Windows and Linux servers virtualization platforms networking and Microsoft 365 services (SharePoint Microsoft Entra ID and Microsoft Teams).

Approximately 15% of the role is dedicated to Level 2 support assisting the Service Desk with infrastructure-related incidents. The role also requires the ability to drive activities in project mode and actively contribute to infrastructure initiatives.

Key Responsibilities

Infrastructure Administration

• Manage and maintain Windows Server and Linux environments
• Administer and monitor virtualization platforms (VMware Proxmox or equivalent)
• Ensure system availability performance patching and lifecycle management
• Manage backup monitoring and disaster recovery processes (e.g. Veeam)
• Maintain certificate management and enforce security standards
• Manage network infrastructure (LAN WLAN user VPNs)

Cloud & Collaboration Platforms

• Administer Microsoft 365 services including:
  • SharePoint Online
  • Microsoft Teams
  • Microsoft Entra ID
• Manage Identity & Access Management and related security controls
• Support integration between on-premises infrastructure and cloud platforms
• Administer Mobile Device Management (MDM) solutions (e.g. Intune)
• Manage container environments (e.g. Docker)

Infrastructure Projects

• Contribute to the design and implementation of infrastructure projects
• Participate in cloud adoption and infrastructure modernization initiatives
• Prepare and maintain technical and architectural documentation
• Coordinate with other ICT teams for infrastructure deployments and changes

Operational Support

• Provide Level 2 support (15% of workload) for infrastructure-related incidents
• Assist the Service Desk with incident resolution and root cause analysis
• Contribute to continuous improvement of infrastructure operations
• Ensure daily backup and availability checks

Qualifications :

Technical Skills

• Strong expertise in Windows Server administration (including Active Directory)
• Strong expertise in Linux system administration
• Experience with virtualization platforms (VMware Proxmox)
• Knowledge of the Microsoft 365 ecosystem (SharePoint Teams Entra ID)
• Understanding of identity management security practices and certificate management
• Experience with scripting and automation (PowerShell Python)
• Knowledge of storage systems (SAN NAS)

Professional Skills

• Strong problem-solving and troubleshooting skills
• Ability to work effectively in remote and international teams
• Experience in managing and driving infrastructure projects
• Strong documentation and communication skills
• Ability to collaborate within cross-functional IT teams
• Proactive autonomous and curious mindset

Experience and Education

• Degree in Computer Science Information Systems or a related field (or equivalent experience)
• Minimum of 5 years experience in system administration or infrastructure engineering
• Experience in enterprise or telecom environments is a plus

Languages

• Fluent in English
• Good command of Dutch (Flemish)
• Knowledge of French is an asset

Additional Information :

All our positions are open to both women and men and are of course open to people with disabilities.

Remote Work :

No

Employment Type :

Contract