Network Security Engineer

ROLE: NETWORK AND SECURITY ENGINEER

LOCATION: BRUSSELS, BELGIUM

CONTRACT DURATION: 6 MONTHS WITH POSSIBLE EXTENSION

LANGUAGE: FRENCH OR DUTCH, ENGLISH

WORK MODE: HYBRID (2-3 DAYS ON-SITE PER WEEK)

Job Description -

Main Responsibilities

• Oversight of routing & switching infrastructure (Cisco-based environment)
• Oversight of firewalling and perimeter security (Palo Alto, FortiGate, Juniper)
• Oversight of load balancing (F5 BigIP LTM)
• Oversight of Cisco Call Manager infrastructure
• L3 escalation support for internal IT teams
• Maintain, monitor, and stabilize hybrid cloud connectivity
• Coordinate with telecom providers, partners and external vendors
• Empower and mentor junior team member
• Ensure documentation and operational best practices

Technical environment

• Hybrid multi-cloud: AWS & Azure
• Connectivity: Megaport, Equinix
• Two Belgian data centres interconnected via Ethernet & Fibre Channel
• Cisco switches & routers
• Palo Alto, FortiGate & Juniper firewalls
• F5 BigIP LTM
• Cisco Call Manager

Specific competences needed

Must have

• 8+ years of experience in network engineering
• Strong expertise in enterprise routing & switching
• Proven hands-on experience with:
• Cisco Catalyst switches and routers
• Palo Alto and/or FortiGate firewalls
• F5 bigIP LTM
• Experience working in hybrid cloud-connected environments
• Solid troubleshooting skills (L3 level)
• Professional English (written & spoken)
• Have a clean certificate of good behaviour.

Nice to have

• Certifications such as CCNP/CCIE, Palo Alto next gen firewall engineer or Fortinet NSE
• Experience with IPv6
• Experience with Cisco Catalyst centre
• Experience with scripting/automation languages
• (Python, Ansible and/or terraform)
• Experience in financial services environments
• Experience with Linux RedHat
• Experience with traditional Microsoft products
• Experience with vulnerabilities management tools

Soft skills

• Operationally strong and comfortable in complex environments
• Structured, documentation-oriented mindset
• Calm and pragmatic under pressure
• Capable of balancing hands-on work with technical coordination
• Natural mentor with strong communication skills
• Autonomous and delivery-focused