TS/SCI Network Engineer – DoD Enterprise WAN

Leidos LLC

Hampton (VA)

On-site

USD 73,000 - 133,000

Full time

14 days+

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Job summary

Leidos is seeking a TS/SCI-cleared Network Administrator to support installation, configuration, and day-to-day management of enterprise network infrastructure at Langley AFB, VA. This role offers hands-on experience with routing and switching platforms, including Session Smart Router (SSR) and 128 Technology WAN solutions, in a structured DoD environment.

The ideal candidate has a solid networking foundation, is eager to learn vendor-specific technologies, and can operate within DoD network

Qualifications

Bachelor's degree with 4+ years of experience or a Master’s degree with 2+ years of experience. Additional years may be considered in lieu of degree.
Must have active and current DoD TS/SCI Clearance.
DoD 8570/8140-compliant certification at IAT Level II - Security+ CE required at minimum.
Demonstrated understanding of OSI model, TCP/IP, subnetting, VLANs, routing protocols (BGP, OSPF, static routing), and WAN technologies.
Practical experience with LAN switching concepts on Juniper EX Series or Cisco Catalyst platforms, including VLANs, STP, and trunking.
Strong analytical and troubleshooting mindset, clear written and verbal communication, and the ability to work effectively in a team environment under supervision.

Responsibilities

Assist in configuring, deploying, and ongoing management of routers, switches, and SSR appliances across enterprise and edge networks.
Support design and implementation of routing policies, service policies, and traffic steering configurations on SSR/128 Technology platforms.
Perform LAN switching administration including VLAN configuration, spanning tree, trunking, and port security on Juniper/Cisco platforms.
Assist with configuration and troubleshooting of routing protocols (OSPF, BGP) across WAN and data center environments.
Monitor network health, availability, latency, and throughput using network management tools; escalate root causes as needed.
Support firewall rules, ACLs, IPsec VPNs, and other network security controls.
Execute software/firmware upgrades and lifecycle maintenance per change management.
Maintain up-to-date network diagrams, device inventories, and SOPs.
Coordinate with senior engineers, system admins, and security personnel to resolve incidents.
Participate in on-call rotation for outages or degraded service events.