Network Engineer - NSX

Responsibilities

• Do you want to grow your career in network engineering and work on projects that safeguard the UK's most critical systems? At Leonardo, our Network Engineers are at the heart of designing, configuring, and supporting secure networks that keep our customers connected and protected.
• What you will do as a Senior Network Engineer
• Design, configure, and support network virtualisation solutions (e.g. 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- 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.

Requirements

• Strong experience in designing, configuring, and supporting network virtualisation platforms (e.g. 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.
• Core areas (must have):
• Strong understanding of TCP/IP, OSI model, and routing/switching protocols (BGP, OSPF, QoS, VPNs, VLANs)
• Network virtualisation (NSX-T): design, configuration, and support of NSX-based networking environments
• Software-defined networking: implementation of logical switching, routing, and micro-segmentation
• Integration of NSX networking within virtualised and platform environments (e.g. VCF)
• Hands-on experience with Cisco or equivalent multi-vendor network equipment
• Network security technologies (firewalls, IDS/IPS, VPN, segmentation)
• Familiarity with virtualisation and cloud networking concepts
• Network monitoring, diagnostic, and analytics tools
• Understanding of ITIL and service management frameworks
• Delivery within secure / enterprise / defence environments
• Desirable :
• VMware NSX-T deep expertise and certification (or equivalent experience)
• VCF networking integration (vSphere, vSAN , Aria Suite)
• Overlay / underlay network design concepts
• Automation of network configuration (Ansible, Terraform, APIs)
• Integration with security tooling (SIEM, SOC platforms)
• Cloud networking (AWS, Azure) and hybrid connectivity
• Experience working in secure or regulated environments
• This is not an exhaustive list, and we are keen to hear from you even if you might not have experience in all the above. The most important skill is a good attitude and willingness to learn.
• Security Clearance
• Location
• This role will be based at one of our UK sites - Yeovil.
• Why join us
• Time to Recharge: Enjoy generous leave with the opportunity to accrue up to 12 additional flexi-days each year.
• Secure your Future: Benefit from our award-winning pension scheme with up to 15% employer contribution.
• Your Wellbeing Matters: Free access to mental health support, financial advice, and employee-led networks championing inclusion and diversity (Enable, Pride, Equalise, Armed Forces, Carers, Wellbeing and Ethnicity).
• Rewarding Performance : All employees at management level and below are eligible for our bonus scheme.
• Never Stop Learning : Free access to 4,000+ online courses via Coursera an

Benefits

Additional Information

Job Description: Salary Range: £44,171 - £58,000 Leonardo UK operates a grade-based salary framework with broad bands. The salary range shown reflects the approved grade band for this role, or a narrower hiring range published within that band, and is benchmarked against the external market. Exceptions above the standard range are managed through governance controls to protect internal equity.

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