Network Infrastructure Engineer

Overview

Our client, a large organisation with over 5,000 staff, is urgently seeking a skilled and motivated Senior Network Infrastructure Engineer to join their Head Office team in Hertfordshire. This is an exciting opportunity for an experienced engineer with a strong background in network design and multi-site infrastructure, who is also comfortable working across on-premises server platforms and hybrid environments.

Responsibilities

• Design, maintain, and evolve our network and infrastructure to support a multi-office WAN environment.
• Manage routers, switches, firewalls, and SAN storage; oversee Windows Server, Active Directory, and VMware platforms.
• Lead transition from the current network to enterprise-grade network solutions such as Juniper, Cisco, or Fortinet (experience would be highly beneficial).
• Work with On-prem, Azure, Microsoft 365, and hybrid cloud technologies; main focus on network infrastructure, server environments, and WAN connectivity.
• Plan, implement, and optimise network designs to ensure reliability, performance, and scalability across multiple sites.
• Be hands-on, technically curious, and project-focused with a track record of delivering multi-office network infrastructure projects.
• Support enterprise infrastructure evolution and continuous improvement initiatives.

Qualifications/Experience

• Experience with enterprise-grade network infrastructure across multiple sites; hands-on networking engineering.
• Fortinet, Juniper, or Cisco certifications would be advantageous but are not essential.
• Exposure to On-prem, Azure, Microsoft 365, and hybrid cloud technologies.

Additional Information

In return, you'll join a forward-thinking IT team where your expertise will have real impact, and you'll be supported to take ownership of complex challenges, drive continuous improvement, and contribute to the evolution of enterprise infrastructure.

InterQuest Group is acting as an employment agency for this vacancy. InterQuest Group is an equal opportunities employer and we welcome applications from all suitably qualified persons regardless of age, disability, gender, religion/belief, race, marriage, civil partnership, pregnancy, maternity, sex or sexual orientation. Please make us aware if you require any reasonable adjustments throughout the recruitment process.

For more information about this role, please contact:

Our client is large organisation with over 5000 staff and are urgently seeking a skilled and motivated Senior Infrastructure Engineer to join our Head