Salary: £65,000 - 75,000 per year Requirements: Strong background in infrastructure engineering and systems administration Proven hands-on experience with Fortinet products, particularly FortiGate, FortiManager and FortiAnalyzer Solid networking knowledge, including TCP/IP, VLANs, VPNs and SD-WAN Good understanding of cyber security principles and best practice Experience administering Microsoft 365 environments Relevant certifications such as CCNA, CompTIA or similar would be beneficial Responsibilities: Implement, manage and support Fortinet technologies including FortiGate, FortiManager, FortiAnalyzer and FortiClient VPN Manage firewall policies, VPNs, SD-WAN and network segmentation Monitor logs and security events, supporting ongoing improvements to network security architecture Deliver and maintain connectivity solutions across multiple sites, including FTTP, Starlink and 4G/5G Configure and support site networking equipment to ensure secure, reliable access to business systems Provide both remote and on-site support for connectivity and infrastructure issues Administer Windows Server environments including Active Directory, Group Policy, DNS, DHCP and file services Support Hyper-V virtualised environments Manage and troubleshoot Microsoft SQL Server environments Support Microsoft 365 technologies including Exchange Online, SharePoint, OneDrive, Teams, Endpoint and Entra ID Assist with the administration of Azure resources Apply cyber security best practice across systems and networks Support patching, vulnerability management and system hardening Assist with incident response, investigation and remediation Help maintain compliance with IT policies and external security standards Provide 1st to 3rd line technical support where required Contribute to infrastructure projects, continuous improvement initiatives and technical documentation Technologies: Active Directory Azure Firewall FortiGate Hyper-V Support Microsoft 365 Network SQL Security SharePoint TCP/IP VPN Windows Office 365 Cloud DevOps More: We are partnering with a well-established construction business in London, providing a fantastic opportunity to join a highly regarded organization delivering new build, refurbishment, and fit-out projects for prestigious UK and international clients. We have a strong reputation for quality, collaboration, and technical excellence, and we are continuing to invest in our internal technology function. As the Infrastructure Engineer, you will play a key role in supporting and improving our IT environment, working closely with the IT Director in a hands-on position suitable for both head office users and operational construction sites. last updated 11 week of 2026