DV Cleared Network Engineer
Confirmed on the employer's own hiring board on Sep 29, 2026. First seen by Alion on Jul 28, 2026. Salt scores C on the Alion truth index.
Location: London (100% On-site)
Salary: Up to £100,000 + 10% Bonus
Security Clearance: Active DV Clearance required (10+ years UK residency essential)
About the Role
We are seeking a Network Engineer to join a global security practice delivering mission-critical infrastructure projects. This role directly supports the safety and resilience of critical national infrastructure and global defense capabilities.
Working as part of a high-performing engineering practice, you will be responsible for designing, building, testing, validating, and maintaining secure network architecture across enterprise and data center environments.
Key Responsibilities Network Infrastructure Management: Accountable for system design, build, testing, validation, maintenance, and support across all network components. Technology Implementation: Deploy new network technologies supporting enterprise and remote site connectivity in line with strategic customer requirements. Standards & Hardware: Maintain standards for global networks (wireless, LAN, SD-WAN) and manage physical/virtual hardware setups (routers, switches, firewalls, and monitoring tools). Network Security: Implement high-grade network security protocols and manage firewall/IDS/IPS configurations. Essential Skills & Experience Routing & Protocols: Deep experience with enterprise/operator-scale routing design using protocols such as OSPF, IS-IS, BGP, LDP, or RSVP. LAN & Switching: Strong knowledge of LAN switching in small-to-medium enterprise and data center environments (e.g., RSTP/MSTP, LAG, MC-LAG, SPB, first-hop security). Network Security: Practical expertise implementing network security standards, including MACSEC, IPSEC, and 802.1x. Firewalls & Inspection: Hands-on experience with security design, firewall management, and IDS/IPS configuration. Key Vetting Requirements Must hold active Developed Vetting (DV) security clearance. Package & Benefits Competitive base salary (up to £100,000 dependent on experience) 10% target annual bonus Outstanding pension scheme Equalized family leave 2 weeks paid carer’s leave & holiday purchase scheme