Leidos is looking for a Senior Network Engineer to be part of a team responsible for the design, migration, implementation, enhancement, optimization, and maintenance of LAN/WAN/Video/Voice/desktop infrastructure. Network engineers are responsible for designing, development, integration and configure unique networks.

This position will require the skillset and experience use free thinking and independent judgement to provide unique solutions. Maintain and upgrade the network hardware and software as well as providing individual solutions for the network to ensure network availability to all system users.

Tasks may include participation in the development of new network designs, assess network management architecture, document the architecture, develop test plans, and conduct the testing effort.

The candidate will be responsible for upgrades and support unique problem resolution.

No more than 5% CONUS travel is required for this position.

Duties shall include, but not be limited to the following:

• Develop technical solutions to issues that may be unclear and require deep technical knowledge.
• Utilizing of various data sources will be necessary to fully understand the issues and inform the solution, have strong skillsets in network monitoring tools and deep analysis of network data.
• Evaluate network service requests and validate/triage unique inquiries.
• Analyze existing and future network infrastructure and provide solutions requirements.
• Maintain network hardware and software, to include network layer communications providing transport.
• Monitor network to ensure availability to all system users and performs necessary maintenance to support network availability.
• Create and update network infrastructure documentation.
• Assist with the development of network architecture and roadmaps.
• Support design, design documentation, factory testing and integrations of network infrastructure.
• Be responsible for installations, upgrades, support assistance and problem determination for operating systems, network hardware, and software products.
• Work with stakeholders to identify short- and long-term priorities, to include multi-year road maps, five-year program and spending plans, strategic network upgrades, process efficiencies, strategic communications, and O&M frameworks.

Required Qualifications:

• Requires an active TS/SCI with poly to be considered.
• Prior experience with programs of similar size and complexity
• Requires a Bachelor's degree with 8+ years of prior relevant experience, 12+ years of experience in lieu of degree
• Hands on experience in network engineering, network administration
• Experience performing network engineering or network administration functions on programs of similar size, scope, and complexity.
• Cisco and Juniper Architecture experience required.
• Ability to lead others and clearly convey complex technical concepts.
• Proven leadership skills in a complex technical environment with tight security restrictions and a diverse work force (4+ years of experience)

Preferred Qualifications:

• Cisco or Juniper Certs

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:

February 18, 2026

Pay Range:

Pay Range $131,300.00 - $237,350.00

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.