Network Engineer with Security Clearance

VTG; Chantilly (VA); On-site; USD 110,000 - 150,000; Full time

Job summary

VTG is seeking a skilled Network Engineer in Chantilly, VA with 5+ years of experience designing, implementing, and supporting enterprise networks. You will design LAN/WAN, configure routers/switches/firewalls, monitor performance, and ensure security and high availability.

Collaboration with systems, cloud, and security teams is essential, along with maintaining documentation and SOPs. The ideal candidate holds a TS/SCI with polygraph clearance, a Bachelor’s degree in CS/Software Engineering or

Qualifications

• Bachelor’s degree in computer science, Software Engineering, or related field.
• 5+ years of experience in network engineering or network administration.
• Active TS/SCI with Polygraph required.
• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, OSPF, BGP.
• Hands-on experience with Cisco/Juniper/Arista hardware and firewalls.

Responsibilities

• Design, implement, and maintain LAN/WAN network infrastructure.
• Configure and manage routers, switches, firewalls, and load balancers.
• Monitor network performance, availability, and capacity; identify and resolve issues.
• Troubleshoot outages and bottlenecks across multiple environments.
• Implement and maintain network security controls including VPNs and access controls.
• Support upgrades, patches, and infrastructure improvements.
• Collaborate with systems, cloud, and security teams to meet business needs.
• Maintain network documentation, diagrams, and SOPs.

Skills

LAN/WAN design

Routing protocols (OSPF/BGP)

Network security fundamentals

Firewall management

VPN technologies

Troubleshooting & monitoring

Linux/Unix scripting (Python/Bash)

Education

Bachelor’s degree in CS/Software Eng or related

Tools

Cisco equipment

Juniper equipment

Arista equipment

Palo Alto / Fortinet / Cisco ASA firewalls

Job description

Overview VTG is seeking a skilled Network Engineer with at least 5 years of experience designing, implementing, and supporting enterprise network infrastructure. The ideal candidate will have strong expertise in routing, switching, network security, and troubleshooting, with a focus on ensuring high availability, performance, and security across the organization’s network environment. What will you do?

• Design, implement, and maintain LAN/WAN network infrastructure
• Configure and manage routers, switches, firewalls, and load balancers
• Monitor network performance, availability, and capacity; identify and resolve issues proactively
• Troubleshoot network outages and performance bottlenecks across multiple environments
• Implement and maintain network security controls, including firewalls, VPNs, and access controls
• Support network upgrades, patches, and infrastructure improvements
• Collaborate with systems, cloud, and security teams to support business and technical requirements
• Maintain network documentation, diagrams, and standard operating procedures
• Ensure compliance with organizational policies and industry best practices Do you have what it takes?
• Active TS/SCI with Polygraph required.
• Bachelor’s degree in computer science, Software Engineering, or related field.
• 5+ years of experience in network engineering or network administration
• Strong knowledge of networking fundamentals (TCP/IP, DNS, DHCP, VLANs, routing protocols such as OSPF, BGP)
• Hands-on experience with network hardware (e.g., Cisco, Juniper, Arista)
• Experience configuring and managing firewalls (e.g., Palo Alto, Fortinet, Cisco ASA)
• Familiarity with VPN technologies (IPSec, SSL VPN)
• Experience with network monitoring and troubleshooting tools (e.g., SolarWinds, Wireshark)
• Strong understanding of network security principles
• Proficiency with Linux/Unix systems and basic scripting (Python, Bash)