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CDH Professionals

Network Security Engineer

On site

Brussels, Belgium

Freelance

08-01-2026

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Skills

Network Security Incident Response Firewalls Cloud Security Monitoring Azure AWS GCP TCP/IP

Job Specifications

Network Security Engineer

Brussels, Belgium

Dutch (mandatory), English (professional working proficiency)

Job Description

We are looking for a skilled Network Security Engineer to join our IT security team in Brussels. You will be responsible for designing, implementing, and maintaining secure network infrastructures, ensuring the confidentiality, integrity, and availability of our systems.

Key Responsibilities

Design, deploy, and maintain secure network architectures (LAN, WAN, VPN, cloud)
Configure and manage firewalls, IDS/IPS, proxies, and network security tools
Monitor network traffic and investigate security incidents
Perform vulnerability assessments, risk analyses, and remediation activities
Implement security best practices and ensure compliance with internal policies and regulations
Maintain documentation, procedures, and network diagrams
Participate in incident response and on-call rotations when required

Required Qualifications

Bachelor’s or Master’s degree in IT, Computer Science, or equivalent experience
Proven experience as a Network Security Engineer or similar role
Strong knowledge of TCP/IP, routing, switching, and network protocols
Hands-on experience with firewalls (e.g. Palo Alto, Fortinet, Cisco), VPNs, and network segmentation
Experience with security monitoring and incident response
Fluent Dutch (spoken and written) – mandatory
Good working knowledge of English

Nice to Have

Certifications such as CCNP Security, CISSP, CISM, or equivalent
Experience with cloud security (Azure, AWS, or GCP)
Knowledge of Zero Trust, NAC, and SASE concepts
Familiarity with Belgian or EU security and compliance standards

About the Company

CDH Professionals is a worldwide executive search firm that specializes in delivering top-tier talent solutions designed to align seamlessly with the specific nuances of the industries we serve and the clients we collaborate with. At CDH Professionals, we believe in building strong and lasting relationships with our candidates. We value open communication and ensure that you feel heard and valued throughout your journey with us. Our team is dedicated to providing comprehensive support and resources, so you can confidently ... Know more