Senior Network Engineer

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MANTECH is seeking a motivated, career and customer-oriented Senior 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 the end-to-end integration of black and red networks, overseeing design, installation, maintenance, and coordination of a growing network with multiple external services to support operational needs.
• Managing a Cisco Unified Communications Manager (CUCM) environment and setting up and troubleshooting IP phones, Video Teleconferencing devices and solutions.
• 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, demonstrating a strong academic foundation in related disciplines. 1.5 years of experience is equivalent to 1 year of college.
• At least 5 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 a deep understanding of MPLS and DMVPN Hub and Spoke technology for efficient network routing.
• DoD 8140 IAT Level II certification:
  Security
  
  CE and Computing Environment (CE) certification in Cisco technology (CCNA Voice) required.
• Valid US Driver’s License with the ability to travel up to 10% locally to customer sites.

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

• Must have an active DoD TS/SCI with the ability to obtain a 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, which may involve delivering presentations.

Mid‑Senior level

Full‑time

Information Technology

IT System Data Services

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