Network Design Engineer- WAN

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

Benefits offered by this job

Competitive compensation

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos in Virginia is seeking a Sr. Network Design Engineer – Core (WAN) to support government customers’ global enterprise networks.

The role requires hands-on router engineering and MPLS WAN architecture expertise, with a focus on modernizing network components to meet mission requirements. Candidates must hold TS SCI with active polygraph and a total of 16 years of combined work history and education (e.g., doctorate with 8 years, master 10, bachelor 12, etc.).

Qualifications

• Requires TS SCI with active Polygraph.
• DoD 8140 IAT Level 2 compliance.
• Hands-on router engineering experience.

Responsibilities

• Responsibility for the MPLS WAN overall architecture
• Developing MPLS WAN services solution
• Performing lab equipment evaluation, integration, and testing
• Assisting with the security accreditation process
• Developing and maintaining relevant technical documentation
• On an as-needed basis, support Tier-4 production troubleshooting and proactive network analysis

Skills

MPLS WAN design

Router engineering

Security accreditation

Lab testing

Education

16+ years exp. equivalent

Tools

MPLS

Routing protocols

WAN optimization

Job description

Leidos has an opening for Sr. Network Design Engineer – Core (WAN) to support our government customers’ global enterprise networks. Network Architecture provides solutions for modernizing the network components while supporting service delivery for customer requirements in a mission-focused operational enterprise. Additionally, the candidate must have experience with hands‑on router engineering and/or operation.

Responsibilities

• Responsibility for the Multiprotocol Label Switching (MPLS) Wide Area Network (WAN) overall architecture
• Developing MPLS WAN services solution
• Performing lab equipment evaluation, integration, and testing
• Assisting with the security accreditation process
• Developing and maintaining relevant technical documentation
• On as-needed basis, the engineer will also be responsible for supporting Tier-4 production troubleshooting and developing pro‑active network analysis solution for the operations team

Required Clearance at the time of application: TS SCI with active Polygraph. Candidate must have 16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years, master’s and 10 years, bachelor’s and 12 years, associates and 14 years or HS diploma and 16 years.

Required qualifications include the following: Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2.

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.

Pay and Benefits

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.

Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• 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.

For more information, visit www.Leidos.com.

Securing Your Data

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.