Network Infrastructure Engineer (Operations, Migration and Security Controls) for NATO with security clearance

Wlgroup; Brussel Hoofdstad; Sur place; EUR 60 000 - 90 000; Plein temps

Résumé du poste

Wlgroup in Brussels is seeking a hands-on network professional for a full-time, on-site role to keep the enterprise network healthy and push infrastructure projects through to acceptance.

You will diagnose and fix incidents on routing, switching and authentication, support Cisco ISE administration, and drive staging, testing, deployment and migration to service.

The position runs from early October to the end of December 2026, with collaboration across internal teams and external providers.

Qualifications

• Experience with enterprise routing and switching.
• Hands-on Cisco ISE administration or equivalent networking auth background.
• End-to-end delivery experience on infrastructure projects (staging to acceptance).
• Ability to keep SOPs and configuration records up to date.

Responsabilités

• Provide 1st and 2nd line support for the enterprise network and diagnose incidents.
• Install, configure, maintain and troubleshoot routing, switching, authentication and related technologies.
• Monitor network performance and take corrective actions.
• Support Cisco ISE administration for client provisioning and changes.
• Perform routine operational maintenance: backups, health checks.
• Support network infrastructure projects through staging, testing, deployment, migration and acceptance.
• Assist with security assessments and implementing controls.
• Maintain documentation and configuration records.
• Identify improvements to processes and infrastructure.
• Liaise with internal teams and external providers.

Connaissances

Routing and switching

Cisco ISE administration

End-to-end infrastructure projects

SOP maintenance

Independent work in a technical team

Outils

Cisco ISE

Networking hardware

Description du poste

This is a hands-on network role in Brussels with two halves: keep the enterprise network healthy day to day, and help push its infrastructure projects through to acceptance. A multinational defence organisation needs someone who can do both without dropping either.

You would be diagnosing and fixing incidents at first and second line, working on routing, switching and authentication, and supporting Cisco Identity Services Engine administration. Alongside that sits the project side — staging, testing, deploying and migrating equipment, then seeing it accepted into service.

What you would be doing

• Provide first and second line support for the enterprise network, diagnosing and resolving incidents systematically.
• Install, configure, replace, maintain and troubleshoot routing, switching, authentication and related network technologies.
• Monitor network performance, spot emerging issues and take corrective or preventive action.
• Support Cisco Identity Services Engine administration for client provisioning, moves, additions and changes.
• Perform routine operational maintenance: configuration management, backups and system health verification.
• Support network infrastructure projects through equipment preparation, staging, testing, deployment, migration and acceptance.
• Assist with security assessments, infrastructure validation and implementing mandatory security controls.
• Maintain standard operating procedures, technical documentation and configuration records.
• Identify and recommend practical improvements to process, performance and infrastructure.
• Liaise with internal teams, service lines and external providers.

What we are looking for

• Solid enterprise routing and switching practice, and the diagnostic instinct that comes with it.
• Hands-on Cisco ISE administration, or the network authentication background to pick it up quickly.
• Experience of infrastructure project work end to end, from staging to acceptance.
• The discipline to keep SOPs and configuration records genuinely current.
• The ability to work with limited supervision while staying part of a technical team.

The role is full time on site in Brussels, Belgium, from early October to the end of December 2026.