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

WLG; Brussel; Sur place; EUR 60 000 - 85 000; Plein temps

Résumé du poste

WLG in Brussels is seeking a hands-on enterprise network engineer to keep the network healthy day to day and drive infrastructure projects through to acceptance. You will diagnose incidents at 1st/2nd line, work on routing, switching and authentication, and support Cisco ISE administration.

The role is full-time on-site in Brussels from early October through December 2026, with responsibilities spanning staging, testing, deployment, migration, and sign-off, plus ongoing SOP maintenance and

Qualifications

• Proven enterprise routing and switching expertise.
• ,
• Hands-on Cisco ISE administration ability or quick learner.
• Experience delivering infrastructure projects from staging to acceptance.
• Maintain current SOPs and configuration records.
• Capable of working with limited supervision within a team.

Responsabilités

• Provide 1st/2nd line support diagnosing and resolving incidents.
• Manage routers, switches, authentication layer and related estate.
• Monitor performance and take corrective actions.
• Support Cisco ISE administration for provisioning.
• Perform routine backups and health checks.
• Lead project stages from staging to migration and sign-off.
• Assist with security assessments and mandatory controls.
• Document configurations and procedures.
• Coordinate with internal teams and external providers.

Connaissances

Routing & Switching

Cisco ISE Administration

Infrastructure project delivery

Documentation & SOP maintenance

Independent working in team

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.
• Building, changing and fixing the estate: routers and switches, the authentication layer, and everything that hangs off them.
• 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: keeping configuration in order, taking backups, and checking the systems are healthy.
• Carrying network projects from kit preparation and staging, through testing and deployment, to migration and sign-off.
• 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.