Network Design Engineer

Leidos LLC; Aurora (CO); On-site; USD 73,000 - 133,000; Full time

Job summary

Leidos is seeking a Design Engineer for CAN/LAN to support its global enterprise networks within the Digital Modernization Sector. You will interpret customer requirements, document designs, and use a private test lab to validate changes and reproduce troubleshooting scenarios.

The role emphasizes secure network designs aligned with DISA STIGs, obtaining Authority to Operate for new devices, and collaborating with Operations engineers to ensure smooth migrations and reliable network services.

Qualifications

• TS/SCI clearance with Poly required.
• 10 years of experience or equivalent education per DoD guidance.

Responsibilities

• 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 private test lab to evaluate new technologies, test proposed changes to production networks, and recreate troubleshooting scenarios.
• Schedule maintenance windows for migrating user connections from legacy to modern infrastructure with minimal data impact.
• Provide technical expertise to operations engineers and technicians for fault isolation and resolution.
• Solve tough problems with innovative and scalable solutions.
• Develop secure network designs aligned with DISA STIGs and enterprise policies; obtain Authority to Operate.
• Supervise network support specialists to plan, coordinate, and implement network services.
• Develop and improve design products, processes, and systems for team efficiency.
• Opportunity to learn MPLS WANs beyond CAN/LAN.

Skills

CAN/LAN design

MPLS WANs

Network troubleshooting

Documentation

Collaboration with Operations

Tools

Cisco

Juniper

Brocade

Job description

Design Engineer (Campus Area Network/Local Area Network (CAN/LAN))

The Digital Modernization Sector at Leidos has an opening for a Design Engineer (Campus Area Network/Local Area Network (CAN/LAN)) to support our customer’s 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

The job duties are as follows:

• 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: TS/SCI with Poly.
• 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.
• 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 a plus.

Company Culture

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.

Original Posting: July 24, 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 $73,450.00 - $132,775.00

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.

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.

About Leidos

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. For more information, visit www.Leidos.com.

Security and Communications

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].

Commitment and Diversity

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.