Network Engineer Principal - TS/SCI with Polygraph

General Dynamics Information Technology•Chantilly, VA

2d•$142,792 - $161,000•Onsite

About The Position

GDIT is hiring a Network Engineer Principal to support mission-critical government projects. The role analyzes customer requirements and develops technical solutions to complex problems, with responsibilities spanning network engineering, operations, maintenance, wireless infrastructure, and technical support. The position requires expertise in wireless networking and Wireless Intrusion Detection System (WIDS) infrastructure, including implementation, system development lifecycle oversight, system and network administration, and Tier-2/Tier-3 incident support. The engineer plans, designs, deploys, maintains, and upgrades network infrastructure in a multi-vendor environment, including physical, virtual, and cloud-hosted networking technologies. The role supports network integrity, availability, security compliance, backup and recovery, and continuous monitoring. It also creates and updates technical documentation, provides recommendations on operating systems and infrastructure integration, coordinates hardware, software, and subcontractor acquisitions, evaluates new technologies, and escalates IT issues to leadership as a subject matter expert. This is an onsite position in Chantilly, Virginia, with required travel of 25–50%. The role requires U.S. citizenship and an active TS/SCI with polygraph clearance. The stated salary range is $142,792–$161,000, subject to experience, geographic location, and contractual requirements.

Requirements

Bachelor of Arts or Bachelor of Science degree.
At least 8 years of related experience.
Westfields experience.
Experience implementing Wireless Intrusion Detection Systems (WIDS).
Experience with the System Development Life Cycle and system/network administration activities.
Windows and Linux systems experience.
Knowledge of 802.11 standards and Cisco/Aruba or Bastille hardware.
Understanding of TCP/IP, OSPF, BGP, VLANs, DNS, and OSI models.
U.S. citizenship.
Must currently possess TS/SCI with polygraph clearance and be able to obtain TS/SCI with polygraph clearance.
Must work onsite at the client location and travel as required.

Responsibilities

Analyze customer requirements and provide technical solutions to a wide range of difficult problems.
Perform radio frequency site surveys, analyze network performance, configure access points and controllers, and troubleshoot connectivity issues.
Plan, design, and deploy network infrastructure, including routers, switches, firewalls, load balancers, and wireless devices.
Maintain and upgrade networks, servers, routers, switches, firewalls, remote access systems, and other network components.
Support multi-vendor Layer 2 and Layer 3 switching and routing, network management solutions, and virtual and cloud-hosted networking technologies.
Support the Information Assurance team with Authority to Operate activities by applying knowledge of the Risk Management Framework process.
Install, configure, and maintain physical Wireless Intrusion Detection System infrastructure; oversee WIDS implementation, the System Development Life Cycle, and system and network administration activities.
Provide operations and maintenance for WIDS architectures, including system administration, information assurance, and storage management.
Analyze network performance, resolve incidents, and provide Tier-2 and Tier-3 support for network and WIDS issues.
Maintain network integrity and connectivity, ensure policy compliance, and maintain system backup and recovery capability.
Use network monitoring applications to monitor traffic, access, and performance; support reliability through continuous monitoring, proactive maintenance, and upgrades.
Create and update technical documentation for network configuration, topology, and mapping.
Recommend approaches for operating system dependencies, physical and virtual server environments, infrastructure integration, and efficient configuration of operating systems and applications.
Coordinate acquisition of hardware, software, and subcontractor services as needed.
Evaluate network solutions, capabilities, and technologies to enhance network capabilities.
Serve as a subject matter expert and escalate IT issues to leadership.
Participate in special projects as required.