Senior Network Engineer - Fortinet

Reference: cmgcx6qkapx4r2r1sj71

We are seeking an experienced Senior Network Engineer with strong Fortinet expertise to design, implement and support secure, resilient network infrastructure across a complex enterprise environment. This is a hands-on role for a technically capable professional who can lead network engineering activities, resolve challenging incidents and contribute to the continual improvement of security, availability and performance.

Key responsibilities will include designing and administering FortiGate firewalls, FortiManager, FortiAnalyzer and associated Fortinet technologies; developing and maintaining firewall policies, VPNs, routing, switching and network security controls; and monitoring infrastructure to identify risks, capacity concerns and performance issues. You will lead the investigation and resolution of complex faults, provide technical escalation support, and oversee changes through appropriate testing, documentation and change-control processes. The role will also involve contributing to network architecture and security projects, supporting audits, maintaining accurate technical documentation, and working collaboratively with infrastructure, cyber security and service delivery teams. You may also be required to mentor junior engineers and provide technical guidance on best practice.

Applicants should have substantial experience in a senior network engineering or network security position, with proven expertise in Fortinet firewall administration and troubleshooting. Strong knowledge of TCP/IP, DNS, DHCP, VLANs, BGP, OSPF, NAT, IPsec and SSL VPN technologies is essential, alongside practical experience of high-availability firewall configurations and secure network design. Familiarity with network monitoring, vulnerability management, incident response and IT service management processes would be advantageous. Relevant Fortinet certification, such as NSE 4 or above, and additional networking qualifications including CCNA or CCNP are desirable. You will need excellent analytical and communication skills, a methodical approach to problem-solving, and the ability to manage priorities effectively while delivering reliable, secure solutions.

COMPETITIVE SALARY
Added 20/10/2026
Reference: cmgcx6qkapx4r2r1sj71

Senior Network Engineer - Fortinet

London, England, United Kingdom Permanent Network Security

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