IT Senior Network Engineer

Overview

We are looking for a Senior Network Engineer to support network segregation initiatives and maintain a modern LAN infrastructure in a critical operational environment. The role focuses on network security infrastructure modernization monitoring and operational support across enterprise and industrial (OT) environments.

Key Responsibilities

• Maintain and upgrade Extreme Networks infrastructure (Switching WiFi NAC)
• Configure and manage Extreme switches Extreme XIQ and Extreme NAC solutions
• Monitor and remediate network security vulnerabilities (CVE management)
• Provide second-line network support to users and technical teams
• Support disaster recovery and network resilience projects
• Configure and maintain network monitoring solutions (SolarWinds)
• Implement and optimize Nozomi solutions for OT network monitoring
• Support OT network segregation and security initiatives
• Maintain data center network infrastructure and physical equipment
• Produce and maintain technical documentation procedures and network diagrams
• Ensure compliance with GDPR ISO 27001 and NIS2 requirements

Required Profile

• Senior experience in network engineering and network security
• Strong expertise with Extreme Networks technologies (Extreme OS NAC XIQ)
• Advanced knowledge of routing protocols DNS DHCP VLANs LACP MLAG and network mirroring
• Experience with Cisco Routing & Switching environments
• Experience with Palo Alto Firewalls and Panorama
• Knowledge of OT/SCADA environments and industrial networking
• Experience with network segregation and cybersecurity projects
• Strong documentation and troubleshooting skills
• Ability to work independently and collaborate with multidisciplinary teams

Languages

• French: Full professional proficiency
• Dutch: Full professional proficiency
• English: Full professional proficiency

Location & Conditions

• Location: Brussels Belgium
• Work model: Hybrid (minimum 3 days per week on-site)
• Duration: Initial assignment of approximately 2 years (440 days) renewable up to 880 working days
• Work schedule: Full-time (40 hours/week)
• Travel: Occasional travel to operational sites in Wallonia may be required