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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network & Security Engineer M/V/X - **Company:** Actiris - **Location:** Belgium - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Wireless LAN, Microsoft Azure, Cloud Computing, Data Centers, Monitoring of Systems, OSI Models, Network Security, NetFlow, Network Monitoring, Cisco Nexus Switches, Simple Network Management Protocols, Syslog, TCP/IP, Wide Area Networks, Wireless Networks, Identity Services Engine, Load Balancing, Firewalls (Computer Science), Information Technology, Routing & Switching, Cisco - **Published:** October 22, 2026 - **Apply:** https://www.actiris.brussels/nl/burgers/jobadvertentie/?reference=5945300 ## About the Role We're looking for a technically strong and hands-on professional who enjoys solving complex problems and taking ownership of projects. Required * 5+ years of relevant experience in LAN/WAN, networking and/or security. * Strong knowledge of: * SD-WAN * Firewall and Cloud Proxy technologies * Cisco wired and wireless networking * TCP/IP and OSI layers 1-7 * Switching and routing * Wireless networking * Firewall troubleshooting * Experience managing network/security projects from planning through implementation. * Excellent troubleshooting and analytical skills. * Hands-on mentality with a proactive approach. * Ability to work independently and manage priorities effectively. * Strong communication and collaboration skills. * Ability to understand business requirements and translate them into effective technical solutions. * Stress-resistant and comfortable working in a global environment. Nice to have Experience with: * Cisco Identity Services Engine (ISE) or equivalent * Cisco Nexus * F5 Load Balancers * Palo Alto Firewalls * Sophos Firewalls * Azure Network Fundamentals * Wireless standards * Monitoring technologies such as NetFlow, SNMP, Syslog and real-time alerts * Certifications such as CCNA, CCNP, Palo Alto, F5, or equivalent Languages & travel * English: strong professional proficiency * Dutch and French: required * Comfortable working with international colleagues and stakeholders. * Willing to travel internationally for short assignments of 5-10 days, approximately 1-2 times per year. ## Description Are you ready to lead global network & security projects, from SD-WAN and Cisco infrastructure to firewall, WLAN and data centre implementations? Are you an experienced Network & Security Specialist looking for a role that combines hands-on technical expertise, project ownership and international collaboration? We are looking for a Group ICT Network & Security Project Specialist to join an international ICT infrastructure team in Groot-Bijgaarden. In this role, you'll be responsible for the end-to-end management and implementation of network and security projects, while also providing advanced support for a global IT environment serving approximately 9,000 users across 100+ sites worldwide. You'll work closely with network and security architects, regional and local IT teams, infrastructure specialists and external technology partners to ensure secure, reliable and high-performing connectivity. Role * Lead Network & Security Projects: Manage projects from the initial planning and budget phase through design, implementation, documentation and follow-up. * Firewalling & Load Balancing: Troubleshoot, maintain and implement firewall and load-balancing solutions and features. * LAN & WLAN: Install, configure and troubleshoot Cisco switching and wireless infrastructure across datacentres, offices, factories and remote sites. * SD-WAN: Collaborate with global WAN providers to ensure reliable and performant connectivity across more than 100 locations. * L2/L3 Support: Provide advanced operational support for complex networking and security issues, working directly or alongside local IT teams. * Monitoring: Maintain and monitor network and security monitoring systems, proactively identifying and resolving potential issues. * Technical Documentation: Interpret and maintain existing documentation and create technical/design documentation for new installations and projects. * Infrastructure Installation: Support physical installations, including racking and stacking, initial equipment configuration, cabling and troubleshooting. * Cross-functional Collaboration: Coordinate with infrastructure, security, HQ IT and local IT teams to ensure successful project delivery. * Prioritisation: Balance project responsibilities with operational support and maintenance, ensuring business-critical activities receive the appropriate priority. You'll also participate in a 24/7 standby rotation for critical incidents, approximately once every 8 weeks.