Network Engineer

Overview

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 within the local area (up to 10% travel).

• Designing and integrating comprehensive network, VoIP, VTC, and data center solutions, adhering to security guidelines and customer specifications to ensure robust and secure communication infrastructures.
• Managing end‑to‑end integration of networks, overseeing design, installation, maintenance, and coordination with external services to support operational needs.
• Diagnosing and resolving complex issues related to customer sites, telecommunications circuits, routing, switching, VoIP, VTC, network encryption devices, and Cisco data center/security to maintain network stability and performance.
• Developing and maintaining detailed documentation, diagrams, and standard operating procedures to facilitate knowledge sharing and efficient network management.
• Providing expert guidance, training, and support to network administrators, service desk personnel, and junior engineers to enhance team capabilities and operational effectiveness.

• 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, with deep understanding of MPLS and DMVPN Hub and Spoke technology.
• DoD 8140 IAT Level II certification:
  Security
  
  CE and CE certification in Cisco technology (CCNA Voice) required.
• Valid US Driver’s License with ability to travel up to 10% locally to customer sites.

• Cisco Collaboration, Data Center, or Security certifications indicating advanced expertise in relevant Cisco technologies.
• Experience implementing or troubleshooting VMware NSX‑T virtualized networking and security platform, enabling automated implementation of network policies, isolation, and micro‑segmentation.

• Must have an active DoD TS/SCI with the ability to obtain a CI polygraph.

The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co‑workers, management, and customers via email, phone, or virtual communication, including delivering presentations.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at  and provide your name and contact information.