Specialist, Network Plan Engineer

L3

Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3

Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3

Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:
Specialist, Network Plan Engineer

Job Code: 38552

Job Location:
Dahlgren, VA

Job Schedule: 9/80

As the premier provider of Space Domain Awareness (SDA) mission solutions for the United States Space Force, L3

Harris is seeking an experienced Network Engineer to join our team. The ideal candidate will have strong experience in designing, operating, troubleshooting, and securing enterprise networks, with particular expertise in Juniper, Cisco, Palo Alto, automation, and compliance.

This role requires a highly capable engineer who can serve as a technical lead for local network modernization, resolve advanced Layer 2/Layer 3 issues, support Zero Trust initiatives, maintain DISA STIG compliance, and execute changes in high-availability environments with minimal or no downtime. This position is on-site in Naval Support Facility Dahlgren, VA.

• Design, implement, maintain, and troubleshoot enterprise network infrastructure across classified and unclassified environments.
• Administer and optimize network deployments.
• Support routing and switching operations, including BGP, OSPF, VLANs, STP, and enterprise segmentation.
• Perform advanced root cause analysis and resolution of complex network incidents affecting mission-critical operations.
• Plan and execute network upgrades, patching, and lifecycle refresh efforts with minimal operational impact.
• Develop and maintain network diagrams, SOPs, TTPs, implementation plans, and technical documentation.
• Automate network configuration, compliance, and deployment tasks using scripting and templating tools.
• Implement and maintain DISA STIG-compliant network configurations across enterprise devices.
• Support Zero Trust Architecture (ZTA) initiatives through posture assessment, profiling, policy enforcement, and access control.
• Manage enterprise-scale switch provisioning and configuration standardization efforts.
• Monitor network health, availability, and performance using enterprise management tools.
• Provide technical guidance and escalation support to junior engineers and technicians.
• Coordinate with cybersecurity, systems, COMSEC, and external organizations to support network changes and vulnerability remediation.
• Deliver technical briefings and status updates to leadership and stakeholders.
• Support after-hours maintenance windows and on-call response for mission-critical outages, as needed.
• Up to 10% travel may be required.

• Bachelor’s Degree in Network Engineering, Information Technology, Cybersecurity, or a related field, and minimum 4 years of prior relevant experience. Graduate Degree and a minimum of 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience.
• Active U.S. DoW Top Secret security clearance with the ability to obtain SCI access within 6 months of hire.
• 6+ years of experience supporting enterprise network infrastructure in a DoD, federal, or similarly regulated environment.
• Strong hands‑on experience configuring, maintaining, troubleshooting, and supporting lifecycle management for Juniper and Cisco network devices.
• Experience applying and maintaining DISA STIG compliance across network devices.
• Experience leading technical training, mentoring junior staff, or serving as a team SME.
• Experience with network automation using scripting, templates, or similar tools.

• Ability to troubleshoot complex network issues across multi‑site or…