Senior Network Engineer

Leidos Inc; Corridor North (MD); On-site; USD 116,000 - 210,000; Full time

Benefits offered by this job

Paid time off

11 paid holidays

401(k) with company match

Flexible schedules

Discounted stock purchase program

Technical upskilling and training

Job summary

Leidos is seeking a Senior Network Engineer to design, implement, and sustain advanced enterprise networks supporting DoD/IC missions. You will optimize performance across LAN, CAN, WAN, and telecom environments while translating mission needs into secure, scalable solutions.

The role requires an active TS/SCI with Polygraph clearance and a willingness to participate in a rotating on-call schedule, including remote support with occasional on-site work. Original posting and pay range apply.

Qualifications

• Bachelor's degree in a related technical discipline and twelve years of network engineering experience.
• IAT Level I certification per DoD 8570.01-M required.
• Active TS/SCI with Polygraph clearance.

Responsibilities

• Design, implement, and sustain complex enterprise and mission networks.
• Optimize performance across LAN, CAN, WAN, and telecom environments.
• Translate mission needs into secure network solutions and ensure DoD/IC compliance.
• Troubleshoot advanced network issues with diagnostic tools and simulators.
• Maintain documentation, diagrams, and accreditation artifacts.

Skills

Network design

Troubleshooting

DoD/IC networks

IAT Level I

TS/SCI with Poly

On-call rotation

Education

Bachelor's degree in a related technical discipline

Job description

Description

Leidos has a new and exciting opportunity for a Senior Network Engineer in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Position Overview

Senior Network Engineer provides advanced network engineering support for the design, integration, optimization, and sustainment of complex enterprise and mission networks. This role focuses on enhancing network performance, implementing scalable solutions, and supporting architectural improvements across LAN, CAN, WAN, and telecommunications environments.

The engineer translates mission and business requirements into secure, high-performing network solutions and collaborates with operations personnel, program management, and engineering teams to ensure reliable network performance in DoD/IC environments.

Primary Responsibilities

• Optimize end-to-end system performance and dataflow through analysis, monitoring tools, and data captures, minimizing latency and maximizing throughput.
• Design, integrate, configure, deploy, test, maintain, and enhance network devices and infrastructure across LAN, CAN, WAN, and telecommunications systems.
• Implement network solutions supporting server and mission requirements, including load balancing, VPNs, firewall contexts, traffic shaping, VoIP, GRE, IPSec, IP encryption, MoIP, and NAT.
• Contribute to the design and improvement of network and mission architecture to support evolving partner and mission requirements.
• Resolve complex network issues using advanced diagnostic tools such as network analyzers, WAN test equipment, and simulators.
• Support network operations by maintaining system documentation, diagrams, and accreditation artifacts while ensuring compliance with ISO 9000 and DoD/IC standards.
• Collaborate with engineering teams to support network equipment, system integrations, and infrastructure changes, including conversions and cutovers.

Basic Qualifications

• Bachelor's degree in a related technical discipline and twelve (12) years of experience providing network engineering support. Candidates without bachelors degrees will require an additional 4 years of related experience
• Information Assurance Technical (IAT) Level I certification in accordance with DoD 8570.01-M.
• Demonstrated experience designing, implementing, and maintaining complex network infrastructures.
• Experience troubleshooting and resolving advanced network performance and integration issues.
• Active TS/SCI with Polygraph clearance
• Participate in a rotational on-call schedule (estimated every 4-6 weeks), with flexible team-managed scheduling and guaranteed on-call compensation
• Provide primarily remote on-call support; occasional on-site response may be required (rare)

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: April 8, 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 $116,350.00 - $210,325.00

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.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at .

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

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.