Senior DoD Network Engineer – On-Site (Lorton, VA)

Society of Defense Financial Management; Lorton (VA); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Senior Network Engineer in Lorton, VA to design, deploy, and sustain DoD-grade network infrastructure across multiple locations. This on-site role requires translating mission requirements into secure, resilient network solutions and providing leadership to junior engineers.

The ideal candidate will have hands-on experience with enterprise routing, switching, firewalls, VPNs, and secure communications within regulated environments, plus strong documentation and teamwork

Qualifications

• Experience designing and troubleshooting DoD-grade enterprise network infrastructure.
• Strong grasp of OSI/TCP/IP models and Layer 14 protocols.
• Hands-on routing and switching in enterprise environments.
• Experience with LAN/WAN, VLANs, STP, and QoS.
• Experience with IPsec/VPN, DoD-approved transports.
• Familiarity with RMF/STIGs and cybersecurity compliance.

Responsibilities

• Develop detailed network architectures aligned with DoD, AFLCMC, cybersecurity, and mission requirements.
• Translate requirements into designs, BOMs, and technical documentation.
• Design, configure, deploy, and troubleshoot enterprise network infrastructure including routers, switches, and firewalls.
• Engineer LAN/WAN solutions with VLANs, STP, QoS, and high availability.
• Configure routing protocols (BGP, OSPF) and secure WAN connectivity (IPsec, VPNs, MPLS).
• Support DoD cybersecurity requirements and RMF/STIGs with secure management practices.
• Maintain network diagrams, IP addressing plans, and as-built documentation.

Skills

Enterprise networking

DoD environment experience

BGP & OSPF

IPsec & VPNs

Network security principles

Technical leadership

Education

Bachelor7s degree + 8+ years

Master7s degree + 6+ years

Tools

Cisco routing/switching

Juniper routing

Firewall technologies

Job description

Leidos is seeking a Senior Network Engineer in Lorton, VA to design, deploy, and sustain DoD-grade network infrastructure across multiple locations. This on-site role requires translating mission requirements into secure, resilient network solutions and providing leadership to junior engineers.

The ideal candidate will have hands-on experience with enterprise routing, switching, firewalls, VPNs, and secure communications within regulated environments, plus strong documentation and teamwork