Network Engineer Principal - TS/SCI with Polygraph

Company: GD Information Technology
Location: Chantilly
Posted on: April 2, 2026

Job Description:

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Data Communication, Network Engineering, Network Management Certifications: None Experience: 8 years of related experience US Citizenship Required: Yes Job Description: NETWORK ENGINEER PRINCIPAL Transform technology into opportunity as a Network Engineer Principal at GDIT. Shape what’s next for mission-critical government projects while shaping what’s next for your engineering career. MEANINGFUL WORK AND PERSONAL IMPACT As a Network Engineer Principal, the work you’ll do at GDIT will be impactful to the mission of client. Analyzes customer requirements and provides technical solutions to a wide range of difficult problems. Performs Radio Frequency site surveys, analyze network performance, configure access points/controllers, and troubleshoot connectivity issues. Key requirements include expertise in 802.11 standards, Cisco/Aruba or Bastille hardware. Plans, designs, and deploys network infrastructure (routers, switches, firewalls, load balancers, and wireless devices). Has strong understanding of networking protocols (TCP/IP, OSPF, BGP), VLANs, DNS, and OSI models. Understand Risk Management Frame process to support IA team with Authority To Operate activities. Performs maintenance and upgrade of networks including servers, routers, switches, firewalls, remote access systems, and networks. B e well versed in a multi-vendor environment for layer 2/3 switching and routing protocols ( e.g., OSPF, BGP, etc.), Network management solutions , a s well as virtual and cloud-hosted networking technologies. Installs, configures, and maintains entire physical networking Wireless Intrusion Detection System (WIDS) infrastructure. Oversee the WIDS implementation, System Development Life Cycle (SDLC), and system/ network administration activities. Operations & Maintenance to include system administration, information assurance, and storage management to all WIDS architectures. Analyzing network performance, resolving, and providing Tier-2/Tier-3 support for network and WIDS incidents . Maintains network integrity and connectivity while ensuring compliance with policies and maintains system backup and recovery capability. Must utilize network monitoring applications for traffic, access, and performance of entire network. Ensuring network reliability through continuous monitoring, proactive maintenance, and system upgrades . Creates and updates technical documentation for network configuration, topology, and mapping. Provide recommendations related to understanding operating system dependencies, physical and virtual server environments, integration with infrastructure resources (e.g. storage and networking), and how to configure operating systems and applications in an efficient manner. Coordinates the acquisition of hardware and software as well as subcontractor services as needed. Evaluates new network solution, capabilities, and technologies to enhance capabilities of the network. Subject matter expert to escalate all IT issues to leadership. Participates in special projects as required. WHAT YOU’LL NEED TO SUCCEED Bring your engineering expertise along with a drive for innovation to GDIT. The Network Engineer Principal must have: ? Education: Bachelor of Arts/Bachelor of Science ? Experience: 8 years of related experience ? Technical skills: Westfields experience, Wireless Intrusion Detection System (WIDS) implementation, System Development Life Cycle, system/network administration activities, Windows and Linux systems experience a must. ? Security clearance level: TS/SCI with polygraph ? US citizenship required ? Role requirements: Onsite client and travel required GDIT IS YOUR PLACE At GDIT, the mission is our purpose, and our people are at the center of everything we do. ? Growth: AI-powered career tool that identifies career steps and learning opportunities ? Support: An internal mobility team focused on helping you achieve your career goals ? Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off ? Community: Award-winning culture of innovation and a military-friendly workplace OWN YOUR OPPORTUNITY Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward. The likely salary range for this position is $119,000 - $161,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: 25-50% T elecommuting Options: Onsite Work Location: USA VA Chantilly Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc . Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Keywords: GD Information Technology, Burke , Network Engineer Principal - TS/SCI with Polygraph, IT / Software / Systems , Chantilly, Virginia