Network Engineers (DV Security Clearance) Position Description CGI''s Space, Defence and Intelligence business unit delivers innovative, secure, and mission-critical technology solutions to some of the UK government''s most complex challenges. Our teams design, build, operate, and modernise large-scale infrastructure estates, working in close partnership with our clients to ensure resilience, performance, and security.We are seeking a Senior Network Engineer to provide hands-on technical expertise across network design, automation, operations, and modernisation initiatives. You will play a key role in sustaining and evolving complex networking environments, including legacy infrastructure, while contributing to the delivery of next-generation hybrid and multi-cloud network architectures.This role suits an experienced, self-motivated engineer with strong networking fundamentals, a passion for automation, and the ability to operate effectively in highly secure environments.Due to the nature of the work, this role is open only to sole UK Nationals who hold or are eligible for DV / HLC clearance, and requires full onsite attendance.Your future duties and responsibilities Network Design and Architecture Design and implement scalable, resilient LAN, WAN, and data centre network architectures. Design and deploy next-generation hybrid and multi-cloud WAN solutions using physical and virtual appliances. Implement application and network policies within Cisco SD-WAN environments.Networ