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Network Security Engineer – Fortinet / Cisco

Required IT
Br11Aa, BR1 1AA, United Kingdom
3 days ago
£55,000 – £60,000 pa

Salary

£55,000 – £60,000 pa

Job Type
Permanent
Work Pattern
Full-time
Work Location
On-site
Seniority
Mid
Education
Degree
Posted
28 May 2026 (3 days ago)
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Network Security Engineer – Fortinet / Cisco

Location: Bromley South (Office Based During Training Period)

Job Type: Full-Time

We are looking for a motivated and technically strong Network Security Engineer to join our small but highly capable infrastructure team. This is an exciting opportunity for someone with strong Fortinet/FortiGate experience and Cisco patching expertise who is looking to play a key role in maintaining and improving a secure and resilient IT environment.

As part of a close-knit team, you will be instrumental in maintaining and enhancing the organisation’s network infrastructure, ensuring optimal performance, up-to-date security, and high reliability across all systems. We are looking for an individual who brings ideas, enthusiasm, and a collaborative approach, with the primary objective of supporting existing team members while enhancing the delivery of security-focused updates and improvements to the infrastructure.

The role will be primarily network focused; however, due to the size of the team, there will also be opportunities and expectations to contribute to wider infrastructure and security projects.

Key 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
Skills & Experience Required
  • 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
Desirable Skills
  • 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

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