Job

Job

Network Security Architect

Job type:Contract
Town/City:Newbury
County:West Berkshire
Salary/Rate:£550 - £650 per day
Business Sector:IT
Job ref:LFI 154850
Post Date:August 21, 2026

Network Security Architect
Hampshire / Hybrid
6 month contract
SC cleared
circa £600 per day

We are looking for a Senior Networking & Security Specialist to take a technical lead role in the design, implementation and delivery of complex multi-vendor network and security solutions.

This is a hands-on position requiring strong expertise across routing & switching, network security, data centre networking and SD-WAN, alongside the ability to produce high-quality technical designs and lead delivery.

Key Responsibilities

  • Lead the design and implementation of complex network and security solutions.
  • Produce HLDs, LLDs, implementation plans and operational runbooks.
  • Configure and troubleshoot enterprise and service-provider network infrastructure.
  • Provide technical leadership and act as a senior escalation point.
  • Work with customers, architects, project teams and vendors to deliver solutions.
  • Lead technical discussions and present solutions to technical and non-technical stakeholders.
  • Mentor and support other engineers.
  • Conduct design validation, testing and technical assessments.

Key Technical Experience

  • Strong Cisco, Juniper and Fortinet experience.
  • Advanced routing and switching: BGP, OSPF, IS-IS, EIGRP, VLANs, STP, VPC/LACP, QoS.
  • Cisco ACI, including spine/leaf, tenants, VRFs, BDs, EPGs and contracts.
  • Network security including NGFWs, IPsec, SSL VPN and SD-WAN security.
  • F5 BIG-IP, L4/L7 load balancing, SSL offloading and GSLB.
  • Data centre networking and high-availability architectures.
  • Network automation using Python, Ansible or network APIs is desirable.

If this Network Security Architect role is of interest apply now or email your CV to me at laura.fitzgerald@cbsbutler.com