Senior Network Engineer – Secure & Scalable Infra

CGI; Chippenham; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading technology solutions provider in the UK seeks a Senior Network Engineer to enhance and support their critical network infrastructure. The role requires expertise in enterprise and defence-grade networks, with an emphasis on technologies including BGP, VPN, and various firewall systems. You will be responsible for network operations, integration solutions, and mentoring junior engineers while collaborating with expert teams. The position offers a competitive salary and benefits, along with the opportunity for professional growth and development in a diverse environment.

Benefits

Competitive salary

Excellent pension

Private healthcare

Share scheme with matching contributions

Career development support

Qualifications

• Proven experience in a senior network engineering role.
• Strong background in defence environments.
• Expertise with Dell OS10, Sonic, Cisco networking, Palo Alto firewalls, and NSX-T.
• Deep understanding of spine-and-leaf architecture, BGP, VPNs, and data centre patching.
• Strong knowledge of DNS, IPAM, load balancing; F5 and InfoBlox experience desirable.
• Excellent analytical, troubleshooting, and communication skills.

Responsibilities

• Lead advanced support and troubleshooting across multiple networking technologies.
• Contribute to network integration and solution design.
• Manage BGP, VPN, spine-and-leaf architectures.
• Oversee IPAM, DNS and optimize load-balancing solutions.
• Support InfoBlox deployments and align operations with strategies.
• Mentor junior engineers and enhance cross-team collaboration.
• Participate in on-call rota for critical incident resolution.

Skills

BGP

VPN

Dell OS10

Cisco networking

Palo Alto firewalls

NSX-T

DNS

IPAM

Load balancing (F5)

Troubleshooting

Job description

A leading technology solutions provider in the UK seeks a Senior Network Engineer to enhance and support their critical network infrastructure. The role requires expertise in enterprise and defence-grade networks, with an emphasis on technologies including BGP, VPN, and various firewall systems. You will be responsible for network operations, integration solutions, and mentoring junior engineers while collaborating with expert teams. The position offers a competitive salary and benefits, along with the opportunity for professional growth and development in a diverse environment.