Network Security Engineer Location: Brussels, Belgium (Hybrid/On-site) Contract: 6 Months (Extension possible) Sector: Manufacturing Languages: Fluent French or Dutch (English a plus) Start: ASAP Overview We are seeking an experienced Network Security Engineer to support a manufacturing client in Brussels. This is a hands-on role focused on securing, supporting, and optimising enterprise network and security infrastructure across IT and production environments. Responsibilities Design, implement, and support secure network infrastructure Manage firewalls, VPNs, routing, switching, and network segmentation Support security technologies including IDS/IPS, NAC, and secure remote access Maintain and improve IT/OT network security and segmentation Investigate incidents, perform vulnerability remediation, and support security hardening Collaborate with infrastructure and operations teams on security initiatives Support documentation, change management, and continuous improvement Required Skills Strong network security engineering experience Expertise in TCP/IP, DNS, DHCP, BGP, OSPF Hands-on experience with Cisco, Palo Alto, Fortinet, Check Point or similar Strong knowledge of firewalls, VPNs, IDS/IPS, and network segmentation Experience in enterprise or manufacturing/OT environments preferred Knowledge of ISO 27001, NIST, or IEC 62443 is a plus Desirable Zero Trust or cloud security exposure (Azure/AWS) Automation/scripting (Python, Ansible) Certifications such as CCNP Security, PCNSE, CISSP Profile Hands-on and practical approach Strong troubleshooting and communication skills Fluent in French or Dutch (mandatory)