Network Engineer - TS/SCI Required

Clearance Level

Top Secret/SCI

Category

IT Infrastructure and Operations

Location

Arlington, Virginia

(Onsite Workplace)

Key Skills For Success

Local Area Network (LAN)

Network Engineering

Network Infrastructures

Network Systems

Operations

REQ#: RQ223523

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.

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.

Work Requirements

Years of Experience

5 + years of related experience

may vary based on technical training, certification(s), or degree

Certification

CompTIA Security+ CE | CompTIA - CompTIA

Certified Network Professional Enterprise (CCNP) | Cisco - Cisco

Cisco Certified Network Associate (CCNA) | Cisco - Cisco

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

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.

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.