Network Engineer (DV Cleared) - Systems Integrator

Hamilton Barnes Associates Limited; England; Hybrid; GBP 58,500 - 71,500; Full time

Benefits offered by this job

Hybrid working (3–4 days onsite)

Exposure to modern SDN and automation technologies

Collaborative engineering culture

Job summary

A leading systems integrator in the UK is seeking a Network Security Engineer to design and support secure networks for defence programs. You'll work closely with project teams to ensure solutions meet performance and security requirements, focusing on software-defined networking and network automation. Strong enterprise networking experience and active DV Clearance are required. The position offers a hybrid work model and the chance to contribute to mission-critical defence programmes.

Qualifications

• Active DV Clearance required.
• Strong enterprise networking experience across routing and switching technologies.
• Experience with software-defined networking, ideally VMware NSX.

Responsibilities

• Design and support secure network infrastructures across private cloud and on-premise environments.
• Configure network security controls ensuring high availability.
• Diagnose and resolve complex network issues proactively.

Skills

Enterprise networking experience

Hands-on experience with software-defined networking

Understanding of network security principles

Experience with network automation tools

Job description

Are you ready to play a pivotal role in safeguarding the UK’s critical infrastructure?

Join a leading systems integrator delivering advanced IT infrastructure and cybersecurity solutions for the UK Defence sector, focused on resilience, innovation, and compliance, providing end-to-end managed services to run, maintain, and secure complex IT systems and hosted applications. With deep expertise in Secure By Design principles, system architecture, and platform implementation, the organization empowers defence operations with reliable, secure, and future-ready technology while offering consultancy and guidance to meet evolving security requirements.

Step into a role where your skills make a tangible impact on national security, and apply now to join the mission!

Responsibilities

• Design, build, and support secure network infrastructures across private cloud and on‑premise environments, ensuring solutions meet strict performance and security requirements. This includes delivering software‑defined networking capabilities within VMware environments and maintaining reliable connectivity across physical and virtual estates.
• Configure and support network security controls such as firewalls, VPNs, and load‑balancing solutions, ensuring high availability and alignment with Zero Trust principles. Automation will be a key focus, with responsibility for reducing manual network operations through scripting and infrastructure‑as‑code techniques.
• Diagnose and resolve complex network issues across routing, switching, and transport layers, proactively improving stability and performance. Working closely with project teams and stakeholders, you will produce clear network designs and documentation while continuously improving how network services are delivered.

Skills / Must Have

• Active DV Clearance (sole UK national)
• Strong enterprise networking experience across routing and switching technologies
• Hands‑on experience with software‑defined networking, ideally VMware NSX
• Solid understanding of network security principles including firewalls, VPNs, and segmentation
• Experience with network automation or configuration management tools (e.g. Ansible, Terraform, scripting)

Benefits

• Hybrid working (3–4 days onsite)
• Work on secure, mission‑critical defence programmes
• Exposure to modern SDN and automation technologies
• Collaborative and technically driven engineering culture

Salary

• £65,000 per annum