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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.
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.
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
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)
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 want, I can tailor this further for a specific audience (e.g., cleared candidates, passive LinkedIn prospects, or internal referrals) or shorten it for a job board.
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.
May 4, 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 $116,350.00 - $210,325.00
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.
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
