Senior Network Engineer – CSfC & Secure VPN Specialist

LCS Defense; Aberdeen (MD); On-site; USD 150,000 - 190,000; Full time

Job summary

LCS Defense is seeking a hands‑on Network Engineer to support secure, classified environments under national security programs. You will design, configure, and troubleshoot high‑assurance LAN/WAN networks, implement CSfC solutions, and build robust IPsec/VPNs across complex networks.

You’ll work with Cisco routers/switches, Palo Alto/SonicWall firewalls, Aruba ClearPass, and VMware ESXi/vSphere, ensuring STIG compliance while maintaining comprehensive documentation.

Qualifications

• Active TS/SCI clearance required.
• 8+ years network engineering experience (DoD or enterprise).
• Strong experience with Cisco devices, firewalls, and VPNs.
• Solid understanding of network security and STIGs.

Responsibilities

• Design, configure, and troubleshoot secure LAN/WAN networks.
• Implement CSfC solutions and secure communications.
• Build and maintain IPsec/VPNs (site-to-site and client).
• Configure Cisco routers/switches and Palo Alto/SonicWall firewalls.
• Support Aruba ClearPass and wireless controllers.
• Operate within VMware ESXi/vSphere environments.
• Maintain STIG compliance and system hardening.
• Use SolarWinds, NetFlow, SEM for monitoring and docs.
• Maintain network diagrams, docs, and configs.

Tools

SolarWinds

NetFlow

SEM

VMware

ESXi

vSphere

ClearPass

Job description

LCS Defense is seeking a hands‑on Network Engineer to support secure, classified environments under national security programs. You will design, configure, and troubleshoot high‑assurance LAN/WAN networks, implement CSfC solutions, and build robust IPsec/VPNs across complex networks.

You’ll work with Cisco routers/switches, Palo Alto/SonicWall firewalls, Aruba ClearPass, and VMware ESXi/vSphere, ensuring STIG compliance while maintaining comprehensive documentation.