Network Administrator

Description

Senior Network Engineer
Leidos – National Security Sector | Cyber & Analytics Business Area

Make an Impact Where It Matters Most

Leidos is seeking a Senior Network Engineer to join our elite team supporting mission-critical national security programs. In this role, you’ll work at the forefront of cybersecurity, network engineering, and advanced analytics—helping defend and enable some of the nation’s most vital operations.

Our Cyber & Analytics Business Area (CABA) brings together experts in Security Engineering, Computer Network Operations (CNO), SIGINT, Mission Software, and Cryptographic Key Management . If you’re looking for meaningful work, cutting-edge challenges, and a team that values innovation and expertise—you’ll find it here.

Why Join Leidos?

We believe great work starts with supporting our people. That’s why we offer:

• Competitive compensation & 401(k) with 6% match (immediate vesting)

• Generous PTO + 11 paid holidays

• Flexible work schedules (no travel required for this role)

• Paid parental leave

• Education, training, and certification support

• Technical upskilling & career growth opportunities

• Employee stock purchase plan

At Leidos, your growth is part of our mission.

What You’ll Do

As a Senior Network Engineer, you’ll play a key role on a high-visibility, fast-paced program supporting multiple organizations from a centralized environment. You’ll tackle complex challenges, influence network strategy, and mentor the next generation of engineers.

Your responsibilities will include:

• Leading advanced network troubleshooting and problem resolution

• Analyzing and optimizing network performance, latency, and throughput

• Designing and implementing scalable, secure network architectures

• Working with technologies such as:

  • Routing protocols & BGP

  • Policy-based routing & traffic shaping

  • IPSec tunneling & NAT

  • Firewalls, load balancing, and WAN optimization

• Evaluating and integrating emerging networking technologies

• Collaborating with cross-functional teams to deliver mission-driven solutions

• Mentoring junior engineers (Levels 0–2) and ensuring engineering excellence

What You Bring

• 12–15 years of network engineering experience (or equivalent expertise)

• Bachelor’s degree in a technical field (or 5 additional years of experience in lieu of degree)

• Strong experience in network design, optimization, and security

• CCNA and CCNP certifications required

• Proven ability to lead technical efforts and mentor teams

Security Clearance Requirement:

• Active TS/SCI with Polygraph (required)

Why This Role Stands Out

• Work on a mission-critical program with real-world impact

• Join a tight-knit, highly skilled team in a collaborative environment

• Gain exposure to advanced technologies and high-level decision-making

• Enjoy stability, growth, and purpose —all in one role

Ready to take your career to the next level?
Join Leidos and help shape the future of national security.

Apply today at careers.leidos.com

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:

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:

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.

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 .

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 .

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 .

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.