Network Operations Engineer (Routing, Switching and Cisco ISE) for NATO with security clearance

This is a hands-on network role in Brussels with two halves: keep the enterprisenetwork 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 routingswitching and authentication and supporting Cisco Identity Services Engine that sits the project side staging testing deploying and migrating equipmentthen seeing it accepted into service.

What you would be doing

• Provide first and second line support for the enterprise network diagnosing and resolvingincidents 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 preventiveaction.
• Support Cisco Identity Services Engine administration for client provisioning movesadditions 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 mandatorysecurity controls.
• Maintain standard operating procedures technical documentation and configurationrecords.
• Identify and recommend practical improvements to process performance andinfrastructure.
• 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 comeswith it.
• Hands-on Cisco ISE administration or the network authentication background to pick itup 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 ofDecember 2026.