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Robert Half

Network Infrastructure Engineer

On site

London, United kingdom

£ 77,000 /year

Full Time

13-03-2026

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Skills

Leadership Firewalls Microsoft 365 VMware Networking Windows Azure Active Directory TCP/IP Windows Server

Job Specifications

Network & Systems Engineer – Real Estate/ Construction – London

£65,000-£77,000 + Discretionary Bonus & Benefits

The Business

Our client is a well-established London based construction firm delivering high-quality new build, refurbishment and fit-out projects ranging from £1m–£60m. Its client portfolio includes globally recognised brands and international recognised prestigious institutions.

The Role

Part of a small team of 3, the Network & Systems Administrator will take ownership of the day-to-day operation, security and continuous improvement of the company’s IT infrastructure.

This is a hands-on technical role supporting both head office and live construction sites. Reporting to the IT Director, the successful candidate will work closely with internal stakeholders, third-party suppliers and consultants to ensure systems are secure, reliable and scalable.

The role requires a strong technical foundation, a proactive mindset and the ability to balance infrastructure leadership with high-level technical support.

Key Responsibilities

Network & Infrastructure

Implement, manage and support Fortinet solutions including FortiGate firewalls, FortiManager, FortiAnalyzer and FortiClient VPN
Manage firewall policies, SD-WAN, VPNs (site-to-site and client), and network segmentation

Systems & Cloud

Administer Windows Server environments including Active Directory, Group Policy, DNS, DHCP and file services
Support virtualised environments
Assist with Azure resource administration

Cyber Security & Best Practice

IT Operations support assistance

Skills & Experience

Proven experience as a Network / Systems Administrator or similar role
Strong hands-on experience with Fortinet products, particularly FortiGate firewalls and VPNs
Solid networking knowledge (TCP/IP, VLANs, routing, firewalling)
Strong understanding of cyber security fundamentals and best practice
Experience administering Microsoft 365 environments
Strong knowledge of Windows Server, Hyper-V or Vmware and Active Directory
Experience delivering 3rd line support in a business environment

The Opportunity

This role offers the opportunity to take ownership of a growing, evolving infrastructure environment within a highly respected London construction firm. The successful candidate will play a key role in strengthening operational resilience, enhancing cyber security posture and supporting a dynamic business delivering projects for world-class clients.

About the Company

Robert Half, the world’s first and largest specialized talent solutions firm, connects opportunities at great companies with highly skilled job seekers. We offer contract, temporary and permanent placement solutions for roles in finance and accounting, technology, marketing and creative, legal, and administrative and customer support. Named to Fortune’s World’s Most Admired Companies and 100 Best Companies to Work For® lists and a Forbes Best Employer for Diversity, Robert Half is the parent company of Protiviti®. Robert Ha... Know more