Senior Network Engineer - Classified DHS & HSDN

Leidos; Lorton (VA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Network Engineer in Lorton, Virginia to lead end‑to‑end deployment and management of classified and unclassified networks, coordinating with cross‑functional teams and ensuring security best practices are followed. You will design, implement, and maintain LAN/WAN and data center networks, with emphasis on high reliability and scalability.

The role requires an active TS/SCI clearance, a Bachelor's degree in a technology field, and 8+ years in enterprise network engineering.

Qualifications

• Active TS/SCI clearance required.
• Bachelor's degree in technology related field with 8+ years of experience in enterprise network engineering.

Responsibilities

• Lead and manage deployment of network solutions across various geographic locations, ensuring projects are delivered on time, within scope, and within budget.
• Oversee the installation, configuration, and testing of network hardware and software, including routers, switches, and firewalls.
• Coordinate with cross-functional teams (engineering, deployment, IA) to ensure smooth deployment and integration of network systems.
• Ensure adherence to network design and security best practices, including implementation of redundancies, scalability, and fault‑tolerant solutions.
• Create detailed project plans, manage timelines, track progress, and address any issues that arise during the deployment lifecycle.
• Design, engineer, and implement local area networks (LANs), wide area networks (WANs), Data Center networks, and other network‑related technologies.
• Perform network configuration and troubleshooting to ensure optimal performance and security.
• Collaborates with cross‑functional teams to integrate network solutions for new and existing systems.
• Conduct thorough risk assessments and implement mitigation strategies.
• Maintain thorough documentation of network deployment processes, configurations, and troubleshooting logs.
• Perform site surveys to assess site readiness and determine deployment needs.
• Provide technical leadership and mentorship to junior engineers and deployment staff.
• Collaborate with network architects to ensure designs are aligned with deployment requirements.
• Troubleshoot and resolve any network issues that arise during deployment and post‑deployment phases.
• Ensure compliance with industry standards and regulatory requirements.
• Conduct regular maintenance and firmware upgrades on critical network infrastructure.
• Create required engineering documentation for network related projects.
• Provide on‑call support and response for critical system emergencies, as required

Skills

Cisco ISE

802.1X

Active Directory

PKI

MAB

VLANs

Wireshark

Splunk

ISE logs

Routing & Switching

TCP/IP

iBGP

eBGP

OSPF

Leadership

Communication

Education

Bachelor's degree in technology related field

Tools

Cisco hardware

Juniper hardware

SolarWinds

Job description

Leidos is seeking a Network Engineer in Lorton, Virginia to lead end‑to‑end deployment and management of classified and unclassified networks, coordinating with cross‑functional teams and ensuring security best practices are followed. You will design, implement, and maintain LAN/WAN and data center networks, with emphasis on high reliability and scalability.

The role requires an active TS/SCI clearance, a Bachelor's degree in a technology field, and 8+ years in enterprise network engineering.