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 DoAs 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'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:May 4, 2026For 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.
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.
Skills Required
- 12-15 years of network engineering experience
- Bachelor's degree in a technical field or 5 additional years of experience
- Strong experience in network design, optimization, and security
- CCNA and CCNP certifications
- Proven ability to lead technical efforts and mentor teams
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. 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 newly launched 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.
