Network Engineer - TS/SCI Required

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Local Area Network (LAN), Network Engineering, Network Infrastructures, Network Systems, Operations Certifications: None Experience: 5 + years of related experience US Citizenship Required: Yes Job Description: GDIT is seeking a Network Engineer to support Enterprise Transport Management (ETM) operations at the Pentagon. This is a full-time onsite role requiring active TS/SCI clearance. The Network Engineer reviews, designs, and supports IT infrastructure to ensure high availability, security, and performance of mission‑critical DoD networks. This role involves network design, configuration, optimization, troubleshooting, and lifecycle management across diverse vendor technologies. MEANINGFUL WORK AND PERSONAL IMPACT: As a Network Engineer supporting ETM, you will be trusted to review and evaluates information technology (IT) infrastructure and systems to ensure adherence to company and customer quality standards. Responsibilities include, but are not limited to: Design, plan, configure, and implement LAN/WAN networks, routing, switching, and firewalls. Deploy and maintain routers, switches, VPN concentrators, remote access systems, and network servers. Serve as a senior escalation point (Tier 3+) for complex transport, optical, crypto, and routing/switching issues. Monitor network health, performance, and capacity; perform proactive maintenance and upgrades. Maintain network integrity, documentation, SOPs, topologies, and backup/recovery capabilities. Evaluate and integrate new communications technologies. Lead or mentor less‑experienced network personnel. Utilize ITSM ticketing systems for workflow management and detailed technical documentation. Support DoD‑specific network environments and comply with security baselines and policies. Perform lifecycle management including patching, firmware, and hardware refreshes. WHAT YOU’LL NEED TO SUCCEED - REQUIRED: Clearance: Active Top Secret/SCI security clearance Certifications: IAT Level II certification One of the following Networking Certifications - Brocade, Cisco (CCNA/CCNP), Juniper (JNCIA/JNCIS/JNCIP) Year's Experience: 5+ years of experience in network administration Education: Bachelors’ Degree in a related field, OR work experience in lieu of degree. Technical Skills: Must have hands-on experience/knowledge with Aruba networking systems Strong knowledge of routing protocols and L3 configurations Location: Willing to report full-time onsite at the Pentagon in Arlington, VA DESIRED QUALIFICATIONS: 10+ years overall experience, including: 5+ years leading installs, troubleshooting, and operations of network devices 5+ years designing and architecting routed/switch networks 3+ years in DoD environments Expertise with routing (BGP, OSPF, EIGRP), switching (VLANs, STP, VxLAN), and multi‑tenant and virtualized network architectures Experience with scripting (Perl, Python) for automation and event handling DoD 8570/8140 IAT Level III certification Bachelor’s in Information Systems, Engineering, or related field (Master’s preferred) 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: Less than 10% Telecommuting Options: Onsite Work Location: USA VA Arlington 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. Our Identity Verification Process: As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes. About Our Work: We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 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 mission-ready capabilities in AI, cloud, cyber and software development. 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 Opportunity Owned From working with technologies like AI, cyber and cloud to careers in intelligence and health, we offer endless opportunities to apply your expertise to create a safer, smarter world. For more information about GDIT's Privacy Policy, click here: Privacy Policy | GDIT