Network Design Engineer

Leidos LLC; Chantilly (VA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Network Engineer (CAN/LAN) to support global enterprise networks. You will design, implement, and transition CAN/LAN services, documentation, and secure configurations across the production environment.

The role requires TS/SCI with Polygraph and 10+ years of related experience; familiarity with OSPF/BGP, VLANs, and port-channels is essential. Expect collaboration with Operations teams, a focus on secure designs, and opportunities to learn MPLS and WANs.

Qualifications

• Security clearance TS/SCI with Polygraph.
• 10+ years of combined work history and education as required for DoD roles.

Responsibilities

• Interpret requirements and apply standard CAN/LAN design approaches.
• Fully document designs with diagrams, BOMs, cabling sheets, and configurations.
• Use test lab to evaluate new technologies and test changes to production networks.
• Schedule maintenance windows with minimal impact to data flows.
• Provide technical expertise to Operations teams for fault isolation and resolution.
• Develop secure network designs aligning with DISA STIGs and enterprise policies.

Skills

CAN/LAN design

MPLS WANs

BGP

OSPF

VLANs

port-channels

CCNP or equivalent

STIGs / security

Education

Bachelor's degree in a technical field

DoD 8140 IAT Level 2

Tools

Cisco equipment

Brocade/Juniper hardware

Job description

The Digital Modernization Sector at Leidos has an opening for a Network Engineer (Campus Area Network/Local Area Network (CAN/LAN)) to support global enterprise networks. The CAN/LAN service network architecture provides solutions for modernizing network components while supporting service delivery for customer requirements in a mission-focused operational enterprise. Our team is completely replacing a global enterprise network while providing design, engineering, and transition for a wide range of customer network requirements. This is a unique and rare opportunity to build and transition critical operations to a modern service provider network architecture.

Job Duties

• Interpret customer requirements and apply standard design approaches for service delivery.
• Fully document designs with diagrams, bill of materials, cabling sheets, configurations, and other supporting documents.
• Use our private test lab to evaluate new technologies and capabilities, test proposed changes to production networks, and recreate troubleshooting scenarios to support the production enterprise network.
• Schedule maintenance windows for migrating user connections from legacy to the modern infrastructure transition services with little to no impact on critical data flows.
• Provide technical expertise to Operations engineers and technicians, supporting fault isolation and resolution.
• Solve tough problems with innovative and scalable solutions.
• Develop secure network designs including configurations that align with Defense Information Security Agency (DISA) Security Technical Implementation Guides (STIGs) and enterprise policies.
• Obtain Authority to Operate (ATO) for new devices, software, and capabilities.
• Supervise (not manage) other network support specialists to plan, coordinate, and implement network services.
• Develop and improve design products, processes, and systems for our team to work efficiently and effectively.
• Although this position is focused on CAN/LAN, this opportunity offers the ability to learn and work on Multiprotocol Label Switching (MPLS) Wide Area Networks (WANs).

Basic Requirements

Required Clearance to be considered: TS/SCI with Polygraph Candidate must have 10 years of experience that can be a combination of work history and education. This equates to a Doctorate and 3 years, master’s and 4 years, bachelor’s and 6 years, associates and 8 years or HS diploma and 10 years. Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2. Experience specific to network engineering to include Tier III or higher network operations and/or network design and implementation. Prior responsibility for production network hardware configurations for Cisco, Brocade, and/or Juniper. Hands-on experience implementing and troubleshooting standard routing protocols in a production network, such as Open Shortest Path First (OSPF) or Border Gateway Protocol (BGP) Hands-on experience implementing and troubleshooting standard switching and trunking protocols in a production network, such as Virtual Local Area Networks (VLANs), 802.1q, and port-channels.

Desired Qualifications

Network engineering and design experience specific to CAN/LAN. Experience should include application of industry standards, developing configurations, and integration of solutions into production environments. Network engineering and design experience with MPLS WANs, network management tools, and firewalls. Expert knowledge of routing and switching protocols and the ability to demonstrate knowledge through briefings and documentation. Extensive BGP experience a plus. Cisco Certified Network Professional (CCNP) or equivalent knowledge. Initiative and disciplined to work unsupervised as part of a network engineering team. Experience establishing process, developing documents, and organizing repositories is a plus.

Original Posting: January 30, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: Pay Range $92,300.00 - $166,850.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

For more information, visit www.Leidos.com.

Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.