Job Description
Network / IT Engineer vacancy in Tewkesbury (230BS)
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Our client is an established and growing defence technology company delivering secure, high-performance networking solutions to UK Defence customers.
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Due to continued growth, they are seeking an experienced Network Engineer to join their engineering team.
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This is a predominantly field-based role, supporting the deployment, maintenance and optimisation of enterprise network infrastructure across secure customer environments.
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This position is ideal for an engineer who enjoys combining technical expertise with customer engagement, taking ownership of projects and delivering resilient, secure networking solutions that support mission-critical operations.
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The Role
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As a Network Engineer, you'll be responsible for designing, implementing and supporting enterprise network infrastructure across a range of secure Defence environments.
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Working closely with customers and internal engineering teams, you'll carry out installations, upgrades, preventative maintenance, network audits and fault resolution, ensuring systems remain secure, reliable and available.
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This role involves frequent travel to customer sites throughout the UK, primarily across the Midlands and surrounding areas. A mileage allowance is provided for all business travel.
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Key Responsibilities
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Design, implement and support enterprise network infrastructure.
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Deploy, configure and maintain high-performance routing and switching environments.
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Configure and support NVIDIA Mellanox Ethernet switches running Cumulus Linux (including MSN****, MSN**** and MSN**** platforms).
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Install, configure and support Cisco Catalyst **** switching platforms.
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Configure, administer and troubleshoot Cisco Firepower **** Series appliances running Firepower Threat Defence (FTD).
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Deliver customer site installations, upgrades,



preventative maintenance and technical health checks.
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Diagnose and resolve complex routing, switching, firewall and connectivity issues.
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Produce high-quality technical documentation including implementation plans, network diagrams and operational procedures.
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Work directly with customers to understand technical requirements and deliver effective networking solutions.
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Participate in planned maintenance windows and occasional out-of-hours activities where required.
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About You
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Our client is looking for an experienced Network Engineer who enjoys solving complex technical challenges and working directly with customers.
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You'll be confident leading technical discussions, comfortable working independently and committed to delivering high-quality engineering solutions within secure environments.
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You'll ideally have:
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Extensive experience designing, implementing and supporting enterprise network infrastructure.
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Expert knowledge of routing and switching technologies.
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Robust troubleshooting, analytical and diagnostic skills.
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Excellent customer-facing communication and stakeholder management skills.
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Experience working within secure or cryptographic environments.
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Strong knowledge of:
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BGP
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OSPF
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VLANs
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VRRP / HSRP
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Spanning Tree
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Quality of Service (QoS)
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Multicast
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IPv4 / IPv6
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High Availability networking
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Hands-on experience with:
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NVIDIA Mellanox Ethernet switches running Cumulus Linux.
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Modern data centre networking technologies including:
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EVPN
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VXLAN
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MLAG
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Leaf-Spine architectures
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Desirable Skills
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Infrastructure as Code (IaC) using Ansible.
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Linux systems administration.
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VMware ESXi administration.
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Network automation and configuration management.
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Monitoring, logging and network performance analysis tools.
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Git-based configuration management.
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Experience supporting secure or air-gapped environments.
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Relevant certifications such as CCNP Enterprise, CCIE Enterprise Infrastructure, NVIDIA Networking, or equivalent.
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What's on Offer
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Benefits
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Flexible working culture and versatile working hours.
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25 days annual leave plus the option to purchase additional leave.
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10% employer pension contribution.
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Health Cash Plan for employees and eligible family members.
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Benefits platform including Cycle to Work, technology purchase schemes and retail discounts.
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Ongoing training and professional development.
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Two annual bonus opportunities (subject to company performance).
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Enhanced maternity, paternity and adoption leave.
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Recruitment referral bonus.
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Reservist leave.
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Modern office facilities with complimentary refreshments.
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Smart casual "Dress for Your Day" policy.
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Free parking or parking reimbursement.
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Company social events and annual training days.
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Security Requirements
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Due to the nature of this role, applicants must be eligible to obtain and maintain UK Developed Vetting (DV) clearance and STRAP access.
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A full UK driving licence and willingness to travel extensively throughout the UK are essential.
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Candidates with active DV clearance are highly encouraged to apply.
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📌 Network / It Engineer Vacancy In Tewkesbury (230Bs) (Burnie)
🏢 Ex-Mill Recruitment
📍 Burnie