Senior Network Security Engineer

We are hiring a Freelance Senior Network & Security Engineer for a long-term contract running until end of the year. This role sits within a technology-driven business delivering secure network and infrastructure solutions to enterprise and critical infrastructure clients across Europe. This is a hands-on, client-facing engineering role focused on secure network design, firewall implementation and private cloud connectivity. It is not a pure support or SOC position.

Responsibilities:

• Design and validate secure network architectures for client environments
• Implement and configure Fortinet and/or Palo Alto firewall solutions
• Deploy and secure routers, switches and access points (hardware + software)
• Configure routing, segmentation and VPN connectivity
• Support private cloud and data centre network infrastructure
• Act as the technical lead during project delivery alongside Project Managers
• Provide 2nd and 3rd line support on complex installations
• Deliver on-site client training following implementation
• Contribute to vulnerability management and security hardening activities

Requirements:

Experience

• 5–7+ years in a Network & Security Engineering role
• Strong experience in enterprise or managed services environments

Technical Skills

• Fortinet (FortiGate) and/or Palo Alto firewalls
• HA clustering
• Centralised management
• Advanced security policies
• Strong L3 networking knowledge:
• Routing (static and dynamic)
• NAT and VLAN segmentation
• IPsec VPN
• ACLs and 802.1x
• Solid understanding of secure network architecture principles
• Experience installing and configuring network hardware
• Working knowledge of VMware and core Windows/Linux fundamentals