Network Plan Engineer

Network Plan Engineer

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 Code: 42632

Job Location:

Dahlgren, VA

Job Schedule:

9/80 (Every other Friday off)

Job Description:

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 onsite at Naval Support Facility Dahlgren, VA.

Essential Functions:

• 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

Qualifications:

• Must have an Active Top Secret Clearance with ability to obtain SCI access within 6 months of hire
• Bachelor's Degree in Network Engineering, Information Technology, Cybersecurity, or a related field and a minimum of 4 years of prior relevant experience;
  Or, Graduate Degree and a minimum of 2 years of prior related experience;
  Or, in lieu of a degree, a minimum of 8 years of prior related experience
• 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

Preferred Additional

Skills:

• Ability to troubleshoot complex network issues across multi‑site or large‑scale environments
• Experience producing technical documentation, including diagrams, SOPs, and engineering procedures
• Ability to work independently and collaboratively in operationally sensitive, mission‑critical environments
• Experience with multi‑vendor network fabric management using Apstra Data Center Director for provisioning, visibility, automation, and lifecycle management
• Hands‑on experience troubleshooting on‑premises and off‑premises fiber optic infrastructure, including fiber…