Sr. Core Network Engineer

Leidos; Chantilly (VA); On-site; USD 92,300 - 166,850; Full time

Job summary

Leidos invites applications for a Sr. CORE Network Engineer to support government customers’ global enterprise networks.

The role focuses on modernizing network components while ensuring service delivery to mission-critical operations, with hands-on router engineering experience preferred. The position involves owning MPLS WAN architecture, developing services, evaluating lab equipment, and supporting security accreditation processes, plus documenting technical work and providing Tier-4 support

Qualifications

• Requires TS/SCI with Poly clearance.
• 16 years of experience or combination of education/work history.
• DoD 8140 IAT Level 2 compliance.

Responsibilities

• Responsible for 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 as‑needed basis, support Tier‑4 production troubleshooting and proactive network analysis.

Job description

Description

Leidos has an opening for Sr. CORE Network Engineer 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.

• 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.

Basic Requirements

• Required Clearance: TS/SCI with Poly

• 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.

• 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.

Original Posting:

Pay Range:

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About 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 $16.7 billion for the fiscal year ended January 3, 2025. 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 at www.leidos.com/careers/pay-benefits .

Commitment to Non-Discrimination

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.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.