Network Specialist

Senior Infrastructure & Network Engineer (Fortinet Specialist)

The Opportunity

We are working with a well-established organisation seeking a Senior Infrastructure & Network Engineer to take ownership of their core IT infrastructure and network environment.

This is a hands-on role supporting both head office and remote/project-based environments. You’ll play a key role in ensuring the stability, security, and ongoing improvement of systems, with a strong focus on network security and Fortinet technologies.

The Role

Reporting to the IT Director, you will be responsible for the day-to-day management, security, and optimisation of the organisation’s IT infrastructure. You will work closely with internal teams and external partners, acting as a technical escalation point while also driving improvements across the environment.

This role requires a proactive engineer with strong Fortinet and firewall experience, alongside a solid infrastructure background.

Key Responsibilities

Network & Security (Core Focus)

• Lead the implementation, management, and support of Fortinet solutions, including:
• FortiGate firewalls
• FortiManager & FortiAnalyzer
• FortiClient VPN
• Own and manage firewall policies, VPNs (site-to-site and remote access), SD-WAN, and network segmentation.
• Monitor, analyse, and respond to security events and logs using FortiAnalyzer.
• Drive continuous improvement of network security architecture and best practices.
• Support secure connectivity solutions across multiple locations (including temporary or remote sites).
• Provide hands-on troubleshooting for complex network and firewall-related issues.

Infrastructure & Cloud

• Administer Windows Server environments (Active Directory, Group Policy, DNS, DHCP, file services).
• Support and maintain virtualised environments (Hyper-V).
• Provide basic administration and support for Microsoft SQL Server.
• Manage Microsoft 365 services (Exchange Online, SharePoint, OneDrive, Teams, Endpoint, Entra ID).
• Assist with Azure infrastructure and services.

Cyber Security

• Apply security best practices across infrastructure and systems.
• Support vulnerability management, patching, and system hardening.
• Assist in incident response and remediation activities.
• Ensure compliance with IT security policies and standards.

General IT

• Provide 2nd/3rd line support and act as an escalation point for complex issues.
• Contribute to infrastructure projects and continuous improvement initiatives.
• Maintain clear and up-to-date technical documentation.

Skills & Experience

• Strong experience in IT infrastructure and systems administration.
• Extensive hands-on experience with Fortinet technologies is essential (FortiGate, FortiManager, FortiAnalyzer).
• Proven expertise in firewall management, network security, and VPN technologies.
• Solid networking knowledge (TCP/IP, VLANs, SD-WAN).
• Good understanding of cyber security principles and frameworks.
• Experience with Microsoft 365 and Windows Server environments.
• Relevant certifications (e.g. Fortinet NSE, CCNA, CompTIA Security+) are highly desirable.