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# Network Security Architect

- **Company:** CBS Butler Limited
- **Location:** Newbury, UK
- **Experience:** Expert
- **Salary:** £143,000.0 - £169,000.0
- **Contract:** Temporary contract
- **Skills:** Link Aggregation (Ethernet), Application Programming Interfaces (APIs), Border Gateway Protocol, Complex Networks, Data Centers, Enhanced Interior Gateway Routing Protocol, Internet Protocol Security (IP SEC), Python (Programming Language), Network Security, Network Architecture, Routing, Cisco Nexus Switches, Open Shortest Path First (OSPF), Ansible, Virtual Local Area Networks, Wide Area Networks, Transport Layer Security, Load Balancing, Amazon Virtual Private Cloud (VPC), Juniper, Fortinet, Routing & Switching, Open Network Automation Platform, Big Ip, Cisco, SSL VPN
- **Published:** August 21, 2026
- **Apply:** https://jobsthamesvalley.co.uk/jobs/apply/ats-redirect/?id=2937222552-2

## About the Role

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., * 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.

## Description

* 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.


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