Network Security Engineer - Hybrid (Brussels)

Leonardo S.p.A.; Brussel Hoofdstad; On-site; EUR 60,000 - 75,000; Full time

Benefits offered by this job

High-visibility cybersecurity work

Long-term career opportunities

International multidisciplinary teams

Job summary

Leonardo Belgium is seeking a Network Security Engineer to design, deploy, and maintain secure network infrastructures across LAN/WAN/WLAN and VPN, while ensuring performance, resilience, and security.

You will configure and harden enterprise network infrastructure (routers, switches, firewalls, NAC, IDS/IPS, EDR) and troubleshoot complex issues, collaborating with cybersecurity architects and international teams to deliver secure solutions.

Qualifications

• Bachelor's degree in Computer Science, Network Engineering, or a related field; appreciated but not mandatory if proven experience
• Several years of professional experience in network engineering with exposure to secure environments
• Certifications in network security are desirable but not mandatory

Responsibilities

• Design, deploy, and maintain secure LAN, WAN, WLAN, and VPN infrastructures
• Configure, harden, and maintain enterprise network and security infrastructure (routers, switches, firewalls, NAC, IDS/IPS, EDR)
• Troubleshoot complex networking and connectivity issues
• Drive integration of network security controls and transition toward hybrid and cloud environments
• Produce and maintain technical documentation and network diagrams
• Collaborate with cybersecurity architects, infrastructure engineers, and international stakeholders
• Support junior colleagues by sharing technical knowledge and best practices

Skills

Routing protocols

VLANs

Spanning Tree

VPN technologies

Network design

IPS

Security hardening

Analytical thinking

Communication

Network automation

Cloud networking

Languages

Education

Bachelor's degree in CS/Network engineering

Tools

NAC

IDS/IPS

EDR

Routers and switches

Firewall

Job description

Leonardo Belgium is seeking a Network Security Engineer to design, deploy, and maintain secure network infrastructures across LAN/WAN/WLAN and VPN, while ensuring performance, resilience, and security.

You will configure and harden enterprise network infrastructure (routers, switches, firewalls, NAC, IDS/IPS, EDR) and troubleshoot complex issues, collaborating with cybersecurity architects and international teams to deliver secure solutions.