Network Specialist (Freelance) - 12 Months - Brussels Belgium

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About the Role

We are seeking a Network Specialist for a high-impact, freelance mission with our client in Brussels. This is a 12-month, full-time opportunity for a builder ready to shape, secure, and optimize critical network infrastructure in a hybrid work environment. Your expertise will directly influence the performance, security, and evolution of essential information systems.

Why This Role Matters

As a Network Specialist, you will be at the heart of ensuring business continuity and digital innovation. Your work will guarantee the availability, performance, and security of our client’s network infrastructure, supporting the mission-critical operations of a leading academic institution. The stakes are high: your impact will be felt across every user, every system, and every project that relies on robust, secure connectivity.

What You’ll Be Doing

• Designing, implementing, maintaining, and securing network infrastructures to ensure optimal system availability and performance
• Administering and operating LAN/WAN networks, including advanced troubleshooting and incident resolution (Level 2/3)
• Driving projects to evolve and optimize network and datacenter infrastructure
• Managing and maintaining network equipment: switches, routers, firewalls, load balancers
• Configuring and managing routing, switching, and network protocols (TCP/IP, LAN, WAN)
• Implementing and monitoring network security policies (access control, segmentation, monitoring)
• Ensuring quality of service (QoS) and high availability of network services
• Documenting configurations, procedures, and network architectures
• Collaborating closely with system, security, and application teams
• Participating in the design and evolution of network architectures
• Managing datacenter infrastructure and supporting project-based and operational activities

What We’re Looking For

• Proven experience (medior level) as a Network Engineer or Network Specialist, with recent hands-on expertise
• Deep knowledge of network protocols (TCP/IP, LAN, WAN) and technologies
• Strong skills in routing, switching, and network security (firewalls, VPN, authentication)
• Experience with network monitoring and diagnostic tools
• Ability to work both in project mode and operational support
• Experience in datacenter infrastructure management
• Project management experience and ability to follow up on works and maintenance
• Quality management mindset and attention to service continuity
• Experience with special techniques (HVAC, electricity, etc.) is a plus
• Excellent communication and teamwork skills
• Ownership mentality, problem-solving drive, and a passion for building impactful solutions

Technical Skills

• Network protocols: TCP/IP, LAN, WAN
• Routing and switching technologies
• Network security: firewalls, VPN, authentication
• Network monitoring and diagnostic tools
• Datacenter infrastructure management
• Project management (certification is a plus)
• Special techniques (HVAC, electricity, etc.)

Language Proficiency

• French: Native or bilingual proficiency
• English: Limited working proficiency

Other Requirements

• 2-3 years of experience in an academic or university environment is a strong advantage
• Engineering degree required
• Data Center Designer certification is a plus
• Project management certification is a plus
• Hybrid work: 4 days on site, 1 day remote
• Freelance contract, 12 months, with potential for extension
• Fast payment available according to contract terms

Ready to build the future? Upload your CV and join the movement of elite builders at RELYzIT Talent.

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