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Senior Network Engineer Security Clearance

Job in Aberdeen Proving Ground, Harford County, Maryland, 21005, USA
Listing for: Legacy Consulting Services , LLC
Full Time position
Listed on 2026-06-01
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security
Job Description & How to Apply Below
Position: Senior Network Engineer with Security Clearance
Location: Aberdeen Proving Ground

The Opportunity Join a mission-focused team supporting secure, classified network environments for national security programs. This role is hands-on and focused on CSfC implementations, VPN architectures, and enterprise network engineering across complex, high-assurance environments. What You’ll Do
Design, configure, and troubleshoot secure network infrastructures (LAN/WAN)
Implement and support CSfC solutions and secure communications
Build and maintain VPNs (IPSec, IKEv2, site-to-site, client VPN)
Configure Cisco routers/switches, Palo Alto & Sonic Wall firewalls
Support Aruba wireless (Clear Pass, controllers, APs)
Work within VMware environments (ESXi, vSphere)
Enforce STIG compliance and system hardening
Utilize tools like Solar Winds, Net Flow, SEM for monitoring
Maintain network documentation, diagrams, and configs What You Bring
Active TS/SCI 8+ years of network engineering experience (DoD or enterprise)
Strong experience with:
Cisco (ASR, ISR, Catalyst, Nexus)
Firewalls/VPNs (Palo Alto, Cisco ASA, Sonic Wall)
Routing: BGP, OSPF, EIGRP
Hands-on experience with IPSec VPNs & secure network design
Solid understanding of network security & STIGs Nice to Have
CSfC experience
F5 Load Balancers
PKI / certificates (EJBCA, RHCS)
TACLANE or encryption devices
RHEL / Windows Server exposure
Certs (Preferred)
CCNP (Enterprise) or higher
Security+ CE
CCNA Why Join
Direct impact on national security missions
Work on cutting-edge secure network systems
High-visibility role with strong technical ownership
Apply Today If you're a hands-on engineer who thrives in secure, high-performance environments, we’d love to connect.
Position Requirements
10+ Years work experience
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