Network Architect
Job Description
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Job Description:
About DXC Technology
DXC Technology is a Fortune 500 global technology services company with over 40 years' presence in the UK, recently establishing its Aerospace and Defence Hub in Farnborough. We deliver critical network solutions supporting defence and aerospace organisations operating in highly secure, mission-critical environments.
About the Role
The Network Architect designs, implements and manages enterprise-scale secure network infrastructures for defence and aerospace clients. You will lead the development of network strategies, architect secure multi-site connectivity solutions, and ensure networks support both current operations and future modernisation programmes. This role demands deep technical expertise in network technologies, security architecture and MOD-compliant network design.
Key Responsibilities
Network Architecture & Design
Design enterprise-scale secure network architectures supporting defence operations
Architect multi-site connectivity solutions including WAN, MPLS, SD-WAN and hybrid cloud network designs
Design segmented network architectures incorporating zero-trust security models
Lead network technology selection and recommend solutions aligned with security and operational requirements
Design network resilience, failover and disaster recovery capabilities
Security & Compliance Integration
Architect network security controls including firewalls, intrusion detection/prevention and advanced threat protection
Design network segmentation and access control frameworks aligned with MOD Classification Guides
Ensure network designs comply with Defence Security Policy and ITAR regulations
Lead network vulnerability assessment and remediation planning
Collaborate with security architects on integrated defence-in-depth network strategies
Network Modernisation & Implementation
Lead design and implementation of network modernisation programmes (legacy to SD-WAN, 4G/5G integration)
Guide cloud-ready network architectures supporting hybrid and multi-cloud strategies
Design software-defined networking (SDN) solutions and network function virtualisation (NFV) implementations
Lead network infrastructure migrations and technology transitions
Technical Leadership & Governance
Lead network technical teams and provide architectural mentoring
Establish network design standards, architecture patterns and operational governance
Drive technical decision-making through network design reviews
Document network architecture decisions and design specifications
Performance, Optimisation & Operations
Design QoS policies and traffic management strategies supporting mission-critical applications
Optimise network performance, bandwidth utilisation and latency
Support network capacity planning and scalability assessments
Establish network monitoring, troubleshooting and operational support frameworks
Customer & Stakeholder Engagement
Serve as primary technical authority for network architecture discussions with customer leadership
Present network recommendations to senior stakeholders and defence programme teams
Manage network architecture workshops and customer design validation activities
Essential Requirements
Security Clearance
Must hold or be eligible to obtain DV clearance - Essential
10 years continuous UK residency required
Experience & Expertise
Minimum 12 years' network engineering experience with 5+ years in architecture role
Proven experience designing enterprise-scale secure network infrastructures
Strong background in defence, aerospace or government network programmes
Demonstrated expertise with WAN, MPLS, SD-WAN and cloud-ready network designs
Track record of leading network modernisation and infrastructure transformation programmes
Technical Knowledge
Deep expertise in network design methodologies and architecture frameworks
Expert-level knowledge of network technologies including routing, switching, firewalls and VPN
Strong understanding of SD-WAN, software-defined networking (SDN) and network virtualisation
Proficiency in cloud networking (AWS, Azure, or equivalent) and hybrid connectivity models
Advanced knowledge of network security architecture including zero-trust security models
Understanding of 4G/5G network technologies and wireless integration
Familiarity with MOD security requirements, Classification Guides and defence contractor compliance
Knowledge of network monitoring, analytics and optimisation tools
Personal Attributes
Exceptional strategic thinking with strong technical depth
Outstanding communication and presentation capabilities
Strong problem-solving and analytical skills
Proven ability to lead technical teams and influence senior stakeholders
Commitment to security excellence and operational resilience
Desirable Requirements
Previous DV or SC clearance
Experience with defence and aerospace network programmes
CCNP, JNCIP or equivalent advanced network certification
Experience with network security specialisations (CCNP Security, CISSP)
AWS/Azure networking certifications
Knowledge of ITAR compliance and export controls
What We Offer
Highly competitive salary and comprehensive benefits
Enhanced pension and private medical insurance
Flexible working and professional development support
Opportunity to architect critical networks for major defence organisations
Application Process & Security Vetting
Applicants should be aware that DV clearance is essential and the vetting process typically takes 6-9 months. Applicants must have 10 years continuous UK residency.
Equal Opportunities
DXC Technology is an equal opportunities employer committed to building diverse, inclusive teams.
Document Version: 1.0 | Last Updated: July 2026
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