Network Engineer

MANTECH is seeking a motivated, career- and customer‑oriented Network Engineer to join our team in Chantilly, VA
. This position requires onsite work at customer locations and up to 10% travel.

• Design and integrate comprehensive network, VoIP, VTC, and data center solutions, adhering to security guidelines and customer specifications.
• Manage end‑to‑end integration of black and red networks, overseeing design, installation, maintenance, and coordination with external services.
• Collaborate with other network engineers to diagnose and resolve complex issues at customer sites, including telecommunications circuits, routing, switching, VoIP, VTC, network encryption devices, and Cisco data center/security.
• Develop and maintain detailed documentation, diagrams, and standard operating procedures.
• Provide expert guidance, training, and support to network administrators, service desk personnel, and junior engineers.

• Bachelor’s degree in Computer Science, Network Engineering, or equivalent field; 1.5 years of experience is equivalent to 1 year of college.
• 3–4 years of experience in networking, including VoIP, VTC, data circuits, network encryption devices (e.g., General Dynamics TACLANE), and virtualization technologies.
• Proficiency in dynamic routing protocols such as OSPF and BGP, and deep understanding of MPLS and DMVPN Hub and Spoke technology.
• DoD 8140 IAT Level II certification:
  Security
  
  CE and Computing Environment (CE) in Cisco technology (CCNA Voice) required.
• Valid U.S. driver’s license with ability to travel up to 10% locally.

• Cisco Collaboration, Data Center, or Security certifications.
• Experience implementing or troubleshooting VMware NSX‑T virtualized networking and security platform.

• Active DoD TS/SCI clearance with the ability to obtain a CI polygraph.

• Must remain stationary 50% of the time; occasional movement within the office for accessing file cabinets, office machinery, or communicating with coworkers, management, and customers via email, phone, or virtual communication. May involve delivering presentations.

Mid‑Senior level

Full‑time

Information Technology

IT System Data Services