Senior Network Engineer – NSX

Salary: £36,000 – 76,000 per year

Requirements

• Strong experience designing, configuring, and supporting network virtualisation platforms such as NSX or similar
• Ability to balance hands‑on engineering with technical leadership and mentoring responsibilities
• Confidence to take ownership of solutions and represent networking in technical discussions
• Strong understanding of TCP/IP, the OSI model, and routing and switching protocols including BGP, OSPF, QoS, VPNs, and VLANs
• Network virtualisation experience with NSX‑T, including design, configuration, and support of NSX‑based networking environments
• Software‑defined networking experience, including logical switching, routing, and micro‑segmentation
• Experience integrating NSX networking within virtualised and platform environments such as VCF
• Hands‑on experience with Cisco or equivalent multi‑vendor network equipment
• Knowledge of network security technologies including firewalls, IDS/IPS, VPNs, and segmentation
• Familiarity with virtualisation and cloud networking concepts
• Experience with network monitoring, diagnostic, and analytics tools
• Understanding of ITIL and service management frameworks
• Experience delivering within secure, enterprise, or defence environments
• Desirable: VMware NSX‑T deep expertise and certification or equivalent experience
• Desirable: VCF networking integration, including vSphere, vSAN, and Aria Suite
• Desirable: Overlay and underlay network design concepts
• Desirable: Automation of network configuration using Ansible, Terraform, or APIs
• Desirable: Integration with security tooling such as SIEM and SOC platforms
• Desirable: Cloud networking experience with AWS, Azure, and hybrid connectivity
• Desirable: Experience working in highly secure or regulated environments

Responsibilities

• Design, configure, and support network virtualisation solutions such as VMware NSX within secure and enterprise environments
• Take ownership of engineering delivery for one or more work packages, including planning, estimation, execution, and reporting
• Develop and review high‑level and low‑level network designs and technical documentation
• Integrate and test network components, ensuring compliance with performance and security requirements
• Provide mentoring, guidance, and technical leadership to Network Engineers and Technicians
• Collaborate with stakeholders, project teams, and customers to ensure solutions meet requirements
• Drive continuous improvement and contribute to engineering standards and governance

Technologies

• AWS
• Ansible
• Azure
• Cloud
• Cisco
• Support
• ITIL
• Network
• Security
• TCP/IP
• Terraform
• VMware
• VPN

More

We are a company supporting secure and complex infrastructure projects that safeguard some of the UKs most critical systems. This is a full‑time onsite role based in Yeovil, Somerset, with flexible extended hours available, offered on a 6-month duration at a competitive umbrella rate. We require active DV clearance, or lapsed DV clearance, due to the sensitive nature of the project. Our environment is agile, innovative, and collaborative, and we value strong technical leadership, stakeholder engagement, and delivery of secure networking solutions.

last updated 27 week of 2026

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