Senior Network Engineer

Senior Network Engineer

Leidos - National Security Sector | Cyber & Analytics Business Area

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 brings together experts in Security Engineering, Computer Network Operations, 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

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

• 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

Pay Range: $ – $

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

Apply today at

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.