Senior Network Engineer
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:
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.
Pay Range:
Pay Range $116,350.00 - $210,325.00The 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.