Infrastructure Network Engineer

As an experienced Infrastructure Network Engineer, you will be responsible for the design, support, maintenance and troubleshooting of the group’s core infrastructure. There will be a strong focus on networking technologies, including Firewalls, switching and wireless environments.

Infrastructure Network Engineer: Duties

• Support, monitor, and maintain network infrastructure across all sites.
• Configure, maintain, and troubleshoot Fortinet Firewalls.
• Support switching infrastructure across Ruckus/Brocade, Cisco Meraki, and Juniper.
• Troubleshoot and optimise wireless networks (Meraki and Juniper Mist).
• Investigate and resolve network performance issues across LAN/WAN environments.
• Perform network upgrades, patching, and life cycle management.
• Assist with infrastructure design and site deployments.
• Provide on-site support for installs and troubleshooting when required.
• Work with third-party vendors to resolve incidents and deliver projects.
• Maintain documentation including network diagrams and configurations.
• Ensure infrastructure aligns with security standards and best practices.
• Support major incident and problem management processes.

• Strong experience with Fortinet Firewalls.
• Experience with switch configuration across multiple vendors, both cloud-controlled and CLI
• Strong WiFi troubleshooting skills (Meraki, Mist).
• Good understanding of TCP/IP, VLANs, routing and switching.
• Knowledge of DHCP, DNS, and VPN technologies.
• Experience in multi-site environments.
• Understanding of network security principles.

Milton Keynes - £40k - £60k per annum + Cash Car Allowance Full Time Posted by: Robert Walters Posted: Wednesday, 19 August 2026 Applicants must be eligible to work in the specified location, The permanent position for an Infrastructure Network Engineer, will pay a salary of £40,000 to £60,000 plus cash car allowance. The role is based out of the Milton Keynes offices.

Robert Walters is working in partnership with a large-scale international retail business. They operate across a platform combining a strong physical network with leading edge digital capabilities to deliver high-value products. Due to continued UK growth, they are keen to appoint an experienced Infrastructure Network Engineer, to be based out of the Milton Keynes offices, paying a salary range of £40,000 to £60,000 plus cash car allowance., Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates