Technical Lead: Networking & Security Architect (Hybrid, SC)

CBSbutler Holdings Limited trading as CBSbutler; Shaw; Hybrid; GBP 92,000 - 111,000; Full time

Job summary

CBSbutler Holdings Limited trading as CBSbutler is seeking a Senior Networking & Security Specialist / Technical Lead for a 6-month rolling contract in Newbury (hybrid). The role demands hands-on leadership, design, and delivery of complex enterprise network and security solutions across greenfield and brownfield environments.

You will produce and validate high‑level and low‑level designs, engage stakeholders, and guide engineers through the project lifecycle while maintaining security and

Qualifications

• Experience across complex network and security solutions.
• Ability to design high level and low level designs (HLD/LLD).
• Hands-on implementation and stakeholder engagement required.

Responsibilities

• Lead design and implementation of complex network and security solutions across environments.
• Produce high-quality HLDs, LLDs, implementation plans and runbooks.
• Perform design validation, PoC testing and verification.
• Configure, deploy and optimize network and security infrastructure.
• Diagnose and resolve complex incidents.
• Conduct capacity planning and technical assessments.
• Act as primary technical point of contact for stakeholders.
• Present designs and strategies to diverse audiences.
• Coordinate engineers with project lifecycle teams.

Skills

Routing & Switching

BGP OSPF IS-IS EIGRP

VLAN STP RSTP MSTP

VXLAN GRE IPsec

Cisco ACI

Network Security

NG Firewall

SSL/TLS SD-WAN

Tools

Cisco IOS/IOS-XE/IOS-XR/NX-OS

ASA Firepower ISE

Catalyst/Aci

Juniper JunOS SRX

Fortinet FortiOS FortiGate

F5 BIG-IP

Job description

CBSbutler Holdings Limited trading as CBSbutler is seeking a Senior Networking & Security Specialist / Technical Lead for a 6-month rolling contract in Newbury (hybrid). The role demands hands-on leadership, design, and delivery of complex enterprise network and security solutions across greenfield and brownfield environments.

You will produce and validate high‑level and low‑level designs, engage stakeholders, and guide engineers through the project lifecycle while maintaining security and