Senior Network Engineer (NE-3)

Leidos has a new and exciting opportunity for a Senior Network Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Job Summary:

As part of this highly visible and fast-paced Leidos prime contract you'll work on a small team that maintains multiple system security plans in a unique and lively customer-focused environment. The successful candidate will be part of a team that provides support to multiple organizations from a central location, with no travel requirements. This is an exciting position that supports a mission critical program with high visibility and a proven track record of success.

Don't miss out on this incredible opportunity to take your career to the next level. Apply today and join one of the most dynamic teams in the industry.

Job Responsibilities/Qualifications:

• Conduct complex network problem analysis; resolve complex network and telecommunications problems.
• Research, recommend, and evaluate network performance, optimization, and security solutions.
• Optimize end-to-end network system performance and traffic flow management.
• Minimize network latency and maximize data throughput through problem analysis and use of network performance analytic tools.
• Assist system engineers and cross-organizational teams to formulate solutions in response to mission requirements.
• Design and verify network solutions to support requirements for routing protocols, policy-based routing, traffic shaping, border gateway protocols, tunneling IP Security, network address translations, network security, firewall contexts, load-balancing, latency, data throughput, WAN acceleration, and monitoring.
• Introduce and integrate new network and telecommunications technologies.
• Provide guidance and leadership to Level 0-2 network engineers.
• Verify and validate activities of Level 0-2 network engineers, ensure approved methods and procedures are followed.
• Qualifications: Twelve (12) to fifteen (15) years' experience as a Network Engineer or related skill set. Bachelor's degree in technical discipline from an accredited college or university. Five (5) years of additional network engineering experience may be substituted for a bachelor's degree.
• Security Clearance: Active TS/SCI with Polygraph required to be considered for this role.
• Certification Requirement: CCNA and CCNP

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you - apply today!

Careers.leidos.com

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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:
January 14, 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:
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.