Network Security Architect

Salary: £49,000 - 89,000 per year

Requirements

• We are looking for an experienced Network Security Architect with 10+ years of hands-on experience in network engineering and architecture, including at least 3+ years specialising in large-scale network segmentation.
• We require 5+ years of hands-on experience implementing and managing leading network security solutions such as NGFWs, NDR, SASE, CASB, WAF, NAC, and ZTNA.
• We need deep expertise in core networking technologies, including SD-WAN, MPLS, VPN, IPSec, and VLANs.
• We expect detailed understanding of enterprise network transport, infrastructure, application, and security protocols, including TCP, UDP, ICMP, ARP, DNS, DHCP, BGP, SNMP, SMB, RDP, HTTP, FTP, TLS/SSL, IPSec, SSH, SAML, and OAuth.
• We are seeking proven experience in identifying, assessing, and remediating network-related security risks and misconfigurations.
• We need strong technical knowledge of Microsoft-based enterprise IT infrastructure.
• We require experience acting as an architect or lead on large projects spanning multiple countries and cultures.
• We are looking for a background in defining security standards and processes within large corporate IT environments.
• We value working knowledge of cyber security frameworks and methodologies such as NIST, ISO 27001, MITRE ATT&CK, and the Lockheed Martin Kill Chain.
• We require candidates to be able to work on-site 5 days per week in Oxfordshire, with flexibility for occasional remote working.

Responsibilities

• We will have our Network Security Architect join our team on a permanent basis and contribute to a global security programme.
• We expect you to focus initially on network segmentation across the business.
• We will rely on you to improve security standards across the organisation.
• We need you to lead technical projects and work closely with our technical colleagues and vendors.
• We want you to apply your expertise across our current technology stack, including Fortigate, Cisco, SD-WAN, and Palo Alto.
• We expect you to identify and resolve network security risks and misconfigurations.
• We need you to help define and implement security standards and processes in our enterprise environment.

Technologies

• Architect
• Cisco
• FortiGate
• HTTP
• Support
• MPLS
• Network
• OAuth
• SAML
• Security
• SMB
• VPN
• WAF
• SDWAN

More

We are offering a permanent Network Security Architect opportunity within a global organisation, based on-site 5 days per week in Oxfordshire with flexible working hours and an earlier finish on Fridays. We offer an excellent salary and a strong benefits package, including a 15% bonus, annual leave, a matched pension scheme up to 9%, life assurance, private medical cover, income protection, an on-site canteen and gym, and many additional perks. This is an important role with an initial focus on network segmentation, and we will support you in leading technical projects and improving security standards across the business.

last updated 19 week of 2026