Network Engineer

The Network Engineering Service designs, builds and validates the core physical and virtual networks powering a secure, multi‑site platform. The role covers formal design work, system testing and resolving complex network issues alongside Service Management.

Key Responsibilities

• Engineer and validate secure multi‑site network components.
  
  
• Produce and review HLDs, LLDs, implementation guides and config standards.
  
  
• Design and manage hierarchical IP subnetting.
  
  
• Configure and troubleshoot OSPF, BGP and enterprise routing.
  
  
• Deploy and maintain routers, switches and firewalls.
  
  
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Implement and support:

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Cisco Nexus

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Cisco IOS XE

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Leaf‑and‑Spine architectures

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VXLAN overlays

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Dual‑Cloud Dual‑Hub DMVPN

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Firewall IPS/IDS

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AAA platforms (ISE)

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Configure TRL crypto devices and manage key material.

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Design and optimise QoS (shaping, policing, scheduling, congestion control).

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Support system testing and resolve network incidents.

Essential Skills & Experience

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3+ years’ hands‑on experience with:

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IP subnetting

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OSPF/BGP

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Enterprise routing, switching and firewalls

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Cisco Nexus & IOS XE

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Leaf‑and‑Spine

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VXLAN

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Dual‑Hub DMVPN

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IPS/IDS

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AAA/ISE

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TRL crypto & key management

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Full QoS configuration

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Recent professional certification (CCNP, VCP‑NV).

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Strong communication, analytical and problem‑solving skills.

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Active SC clearance.

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Competent with Microsoft Office.

Desirable

-Experience in secure/regulated public‑sector environments.

-Defence network and secure gateway support.

-Delivery of accredited secure solutions.

-Agile/Waterfall delivery experience.

-Exposure to large‑scale virtualisation.

-JIRA/Confluence familiarity.

-Relevant technical degree.

-Secure multi‑tenant architecture design.

-Chartered Engineer or working toward it.

Role Details

Job Type: Full‑time, Permanent

Salary: £50,000–£70,000

Benefits: Additional leave, pension, employee discount, hybrid working

Location:Corsham (Wiltshire), hybrid remote