> Markdown version of [/jobs/ext/4552809-security-engineer](https://www.wearedevelopers.com/jobs/ext/4552809-security-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Security Engineer - **Company:** Xact Placements - **Location:** Hertfordshire, United Kingdom - **Experience:** Starter - **Salary:** £28,000 - £35,000 - **Contract:** Permanent contract - **Skills:** Network Address Translation, Subnetting, Virtual Private Networks (VPN), Network Security, Networking Basics, Routing, Remote Access Technology, TCP/IP, Virtual Local Area Networks, Sonicwall, Palo Alto Networks, Fortinet, Firewall Services Module, Cisco - **Published:** November 4, 2026 - **Apply:** https://www.xactplacements.co.uk/vacancy/2998-senior-network-engineer-fortinet-remote/ ## About the Role * Some exposure to firewalls or network security. Fortinet is preferred, but experience with Sophos, WatchGuard, Palo Alto, SonicWall, Cisco or similar is equally welcome. * A solid grasp of networking fundamentals: TCP/IP, subnetting, routing and VLANs * A background in 1st/2nd line support, an apprenticeship, a home lab or relevant study * A real interest in cyber and network security, and a hunger to learn * A methodical approach to problem-solving and good customer communication * A full UK driving licence (essential), as the role includes regular client site visits ## Description We're partnering with a growing network and security MSP in Hertfordshire. They want to bring a Junior Security Engineer into their team who is keen to specialise in firewalls and network security, an area where skills are in demand and careers move quickly. This is a genuine development role. You'll work alongside experienced security engineers, get hands-on with firewall technology across a range of customers, and be supported through certifications as your skills grow. What you'll be doing * Supporting, configuring and troubleshooting customer firewalls, mainly Fortinet FortiGate * Managing firewall policies, NAT, VPNs (site-to-site and remote access) and security profiles * Helping with firewall deployments, migrations and upgrade projects * Visiting customer sites to install and commission security equipment * Handling support tickets, investigating issues and escalating where needed * Keeping clear documentation of configurations and changes What you'll learn * Fortinet firewalling in depth, with support towards Fortinet certifications * Network security best practice across a range of customer environments * How firewalls fit into the wider network, including routing, switching and secure remote access