Infrastructure Engineer

HD Tech Recruit; Greater London; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading technology recruitment firm is seeking an experienced Infrastructure Engineer in London. In this hands-on technical role, you will manage the company's IT infrastructure, ensuring systems remain secure and reliable. Responsibilities include implementing Fortinet solutions, administering Windows Servers, and applying cyber security best practices. The ideal candidate has strong experience in IT infrastructure and relevant certifications, along with a proactive approach to balancing user support and management tasks.

Qualifications

• Strong experience in IT Infrastructure and Systems Administration.
• Hands-on experience with Fortinet solutions, particularly FortiGate and FortiManager.
• Solid understanding of networking including TCP/IP, VLANs, VPNs, and SD-WAN.
• Good understanding of cyber security principles and best practices.
• Strong experience managing Microsoft 365 environments.
• Experience with Windows Server administration and virtualisation.

Responsibilities

• Implement, manage, and support Fortinet security and networking solutions.
• Administer and support Windows Server environments.
• Apply cyber security principles and best practices across infrastructure and systems.
• Provide 1st / 2nd / 3rd line support for technical issues.
• Contribute to IT projects and infrastructure improvements.

Skills

IT Infrastructure and Systems Administration

Fortinet solutions

Networking knowledge (TCP/IP, VLANs, VPNs, SD-WAN)

Cyber security principles

Microsoft 365 environments

Windows Server administration and virtualisation

Education

Relevant certifications (CCNA, CompTIA, etc.)

Tools

FortiGate

FortiManager

Microsoft SQL Server

Hyper-V

Microsoft Azure resources

Job description

HD Tech is pleased to be partnering with a highly respected construction and property delivery business in London to support the recruitment of an Infrastructure Engineer. This organisation delivers a wide range of new build, refurbishment, and high-end fit-out projects for a portfolio of prestigious UK and international clients across sectors including commercial, leisure, residential, hospitality, education, and cultural institutions.

The company has developed an excellent reputation for delivering complex, design-led construction projects, including the restoration and remodelling of listed and historic buildings. With projects typically ranging from £1m to £60m, the organisation prides itself on delivering exceptional quality rather than focusing solely on scale or turnover.

Operating from Central London, the business works closely with clients, consultants, and specialist supply chains to deliver best-in-class results. Their collaborative culture, hands‑on leadership team, and commitment to staff development have created an environment where employees are encouraged to build long‑term careers and take pride in the work they deliver.

The Role – Infrastructure Engineer

As an Infrastructure Engineer, you will play a key role in the day‑to‑day management, security, and ongoing improvement of the company’s IT infrastructure.

This is a hands‑on technical role, supporting both the head office and construction sites, ensuring systems remain secure, reliable, and fit for purpose. Reporting to the IT Director, you will work closely with internal teams, external suppliers, and technical partners.

The role requires a strong technical foundation, a proactive mindset, and the ability to balance infrastructure management with user support.

Key Responsibilities

Network & Infrastructure

• Implement, manage, and support Fortinet security and networking solutions, including:
• FortiGate Firewalls
• FortiClient VPN
• Manage firewall policies, site-to-site and client VPNs, SD-WAN, and network segmentation.
• Monitor and analyse security logs and events via FortiAnalyzer.
• Contribute to the continuous improvement of network security architecture.
• Support connectivity solutions including FTTP, Starlink, and 4G/5G deployments.
• Configure and manage networking equipment for temporary construction project offices.
• Provide remote and on‑site support for connectivity and infrastructure issues across project locations.

Systems & Cloud

• Administer and support Windows Server environments, including:
• Active Directory
• Group Policy
• DNS / DHCP
• File Services
• Support and maintain Hyper‑V virtualised environments.
• Manage and troubleshoot Microsoft SQL Server environments (basic administration).
• Support Microsoft 365 services, including:
• Exchange Online
• SharePoint
• OneDrive
• Teams
• Assist with the administration of Microsoft Azure resources.

Cyber Security & Best Practice

• Apply cyber security principles and best practices across infrastructure and systems.
• Support vulnerability management, patching, and system hardening.
• Assist with incident response, investigation, and remediation.
• Support compliance with internal IT policies and external security standards.
• Promote security awareness and secure configuration practices across the organisation.

General IT Operations

• Provide 1st / 2nd / 3rd line support, including escalation for complex technical issues.
• Contribute to IT projects and infrastructure improvements.
• Maintain system documentation, network diagrams, and technical records.

Skills & Experience

• Strong experience in IT Infrastructure and Systems Administration.
• Hands‑on experience with Fortinet solutions, particularly:
• FortiGate
• FortiManager
• Solid networking knowledge including:
• TCP/IP
• VLANs
• VPNs
• SD-WAN
• Good understanding of cyber security principles and best practices.
• Strong experience managing Microsoft 365 environments.
• Experience with Windows Server administration and virtualisation.
• Relevant certifications such as CCNA, CompTIA, or similar would be advantageous.