Salary: £55,000 - 60,000 per year Requirements: Strong hands-on experience with Fortinet/FortiGate technologies Experience with Cisco networking and patch management Good understanding of network security principles and best practices Experience supporting enterprise network infrastructure Ability to troubleshoot complex networking issues Knowledge of switching, routing, VLANs, VPNs, and firewall policies Strong communication and team collaboration skills Proactive mindset with a willingness to contribute ideas and improvements Experience working within small infrastructure or IT teams Exposure to infrastructure and security project delivery Relevant Fortinet or Cisco certifications Experience with network monitoring and security tools Responsibilities: Manage, maintain, and support Fortinet/FortiGate firewall environments Perform Cisco network patching, upgrades, and maintenance activities Monitor network performance, security, and availability Implement security updates and best practices across the infrastructure Support infrastructure improvement and security enhancement projects Troubleshoot network and connectivity issues across the business Work closely with internal teams to maintain a secure and stable IT environment Assist with documentation, change management, and operational procedures Technologies: Cisco Firewall FortiGate Support Network Security More: We are a small but highly capable infrastructure team based in Bromley South, with the role office based during the training period. We are looking for a motivated and technically strong Network Security Engineer to help maintain and improve our secure, resilient IT environment. This is a full-time opportunity for someone with Fortinet/FortiGate experience and Cisco patching expertise who wants to play a key role in security-focused infrastructure support and improvement. In this close-knit team, we value ideas, enthusiasm, and a collaborative approach, and the role will also offer opportunities to contribute to wider infrastructure and security projects. last updated 24 week of 2026