Senior Enterprise Network Engineer – Fortinet, NAC

Cyber Security training courses; Oxford; Hybrid; GBP 75,000 - 102,000; Full time

Job summary

Fortinet is seeking a Senior Network Engineer to support a large-scale enterprise network across routing, switching, wireless, firewalls and core services. The role emphasizes owning technical decisions and resolving complex incidents in a hybrid Oxfordshire environment.

You will work with infrastructure and security teams, helping maintain secure, highly available services for thousands of users and critical operations. Strong senior-level expertise is essential.

Qualifications

• Senior Network Engineer with experience across enterprise-scale, multi-site networks.
• Hands-on with routing, switching, wireless, firewalls and core infrastructure.
• Strong troubleshooting and ability to lead technical decisions.

Responsibilities

• Manage enterprise firewall administration and security policy.
• Oversee wireless networking and access control platforms.
• Tune routing, switching and network performance optimization.
• Handle DNS, DHCP and IP Address Management.
• Monitor, troubleshoot and resolve network incidents.
• Deliver improvements, upgrades and project work.
• Support security and resilience initiatives.
• Collaborate with infrastructure and security teams to evolve services.

Skills

Troubleshooting

Communication

Problem solving

Leadership

Independent worker

Tools

Fortinet Firewalls

Extreme XIQ Wireless

ClearPass NAC

Infoblox IPAM

DNS/DHCP

IPv4/IPv6

LAN/WAN

Layer 2/3 Switching

Network Security & ACLs

Job description

Fortinet is seeking a Senior Network Engineer to support a large-scale enterprise network across routing, switching, wireless, firewalls and core services. The role emphasizes owning technical decisions and resolving complex incidents in a hybrid Oxfordshire environment.

You will work with infrastructure and security teams, helping maintain secure, highly available services for thousands of users and critical operations. Strong senior-level expertise is essential.