Network Engineer

Salary: £45,000 - 50,000 per year

• We are looking for an experienced Network Engineer with extensive experience designing, implementing and supporting enterprise network infrastructure.
• We need strong expertise in routing and switching technologies, including BGP, OSPF, VLANs, VRRP/HSRP, Spanning Tree, QoS, multicast, IPv4/IPv6 and high availability networking.
• We require hands‑on experience with NVIDIA Mellanox Ethernet switches running Cumulus Linux.
• We need experience with modern data centre networking technologies such as EVPN, VXLAN, MLAG and leaf‑spine architectures.
• We are looking for strong troubleshooting, analytical and diagnostic skills.
• We need excellent customer‑facing communication and stakeholder management skills.
• Experience working within secure or cryptographic environments is preferred.
• Experience supporting secure or air‑gapped environments, infrastructure as code with Ansible, Linux systems administration, VMware ESXi administration, network automation, monitoring/logging tools, Git‑based configuration management and relevant certifications such as CCNP Enterprise, CCIE Enterprise Infrastructure or NVIDIA Networking would be advantageous.
• Applicants must be eligible to obtain and maintain UK Developed Vetting (DV) clearance and STRAP access.
• A full UK driving licence and willingness to travel extensively throughout the UK are essential.
• Active DV clearance is highly desirable.

• We design, implement and support enterprise network infrastructure across secure Defence environments.
• We deploy, configure and maintain high-performance routing and switching environments.
• We configure and support NVIDIA Mellanox Ethernet switches running Cumulus Linux, including MSN
  2100, MSN
  2201 and MSN
  3420 platforms.
• We install, configure and support Cisco Catalyst 9300 switching platforms.
• We configure, administer and troubleshoot Cisco Firepower 2100 Series appliances running Firepower Threat Defence (FTD).
• We deliver customer site installations, upgrades, preventative maintenance and technical health checks.
• We diagnose and resolve complex routing, switching, firewall and connectivity issues.
• We produce high-quality technical documentation including implementation plans, network diagrams and operational procedures.
• We work directly with customers to understand technical requirements and deliver effective networking solutions.
• We participate in planned maintenance windows and occasional out-of-hours activities where required.
• We travel frequently to customer sites throughout the UK, primarily across the Midlands and surrounding areas.

• Ansible
• Cisco
• Ethernet
• Firewall
• Git
• Support
• Linux
• Network
• VMware
• Windows
• Security

We are an established and growing defence technology company delivering secure, high-performance networking solutions to UK Defence customers. This is a predominantly field-based role within our engineering team, ideal for someone who enjoys combining technical expertise with customer engagement and taking ownership of projects that support mission-critical operations. We offer a flexible working culture, flexible working hours, 25 days annual leave with the option to buy more, a 10% employer pension contribution, a Health Cash Plan, bonus opportunities, ongoing training and professional development, enhanced family leave, a recruitment referral bonus, reservist leave, modern office facilities with complimentary refreshments, a smart casual dress-for-your-day policy, free parking or parking reimbursement, and company social events and annual training days.