![Skyline with sunrise behind clouds](/sites/leidos/files/styles/crop_page_hero_image/public/hero/2018-07/HERO_3840x1074_About_video.jpg?h=ee5e0369&itok=Puu8gukq)
Company
Our Company
Leidos is an innovation company rapidly addressing the world's most vexing challenges in national security and health. Our 48,000 employees collaborate to create smarter technology solutions for customers in these critical markets.
Our Business
Our business sectors provide unmatched expertise in core capabilities designed to address our customer's most critical missions.
Health & Civil
The Health & Civil Sector delivers unique capabilities in the areas of public health, care coordination, life and environmental sciences, and transportation.
![Two doctors examining medical information](/sites/leidos/files/styles/tabs_card/public/tabs-card/2023-12/HERO_3840x1074_Health_video_02_0.jpg?itok=vfznDEHy)
National Security
The National Security Sector combines technology-enabled services and mission software capabilities for defense and intel customers in the areas of cyber, logistics, security operations, and decision analytics.
![group of coworkers collaborating over a monitor-table](/sites/leidos/files/styles/tabs_card/public/tabs-card/2023-12/2023-12-29_12-11-26_0.jpg?itok=V3_8S9ez)
Commercial & International
The Commercial & International Sector combines our Security Enterprise Solutions (SES), energy solutions, Australia, and UK businesses.
![International port with containers visible dockside](/sites/leidos/files/styles/tabs_card/public/tabs-card/2023-12/HERO_3840x1074_Civil_video_03.jpg?itok=tizVc5hY)
Digital Modernization
The Digital Modernization Sector brings together our digital transformation and IT programs, allowing us to better serve our customers through scale and repeatability.
![Service personnel examining a server](/sites/leidos/files/styles/tabs_card/public/tabs-card/2023-12/HERO_3840x1074_D%26I_4.png?itok=kA0oplOq)
Defense Systems
The Defense Systems Sector develops and produces advanced space, aerial, surface, and sub-surface manned and un-manned defense systems.
![Satellite orbiting earth with sensors visible](/sites/leidos/files/styles/tabs_card/public/tabs-card/2023-12/IMG-AFA-Satellite-Orbiting-3840x1074.jpg?itok=nbmQGvmL)
Ethics & Business Integrity
We are known throughout industry for maintaining the highest standards of integrity and ethical behavior. The combination of robust policies, procedures, training and communications creates a comprehensive program, touching every aspect of employee conduct.
Partners
Leidos suppliers are critical to the company and customer's success. Our Leidos Alliance members share our customer-focused commitments and encapsulate our mission to make the world safer, healthier, and more efficient through technology, engineering, and science.
Global
With more than 400 locations in 30 countries, we continue to expand our presence and strengthen our international relationships.
Contract Vehicles
Leidos holds a number of government-wide acquisition, indefinite delivery and quantity, blanket purchase agreement, and customer-specific task order contract vehicles in support of civilian and defense agency missions.
View Contract Vehicles![Robert Beyster](/sites/leidos/files/styles/crop_featured_person_image/public/featured-person/2018-07/Beyster_BW_Image.png?itok=WSAAnhN0)
Our founder
In 1969, with a few dollars and a good idea, visionary scientist J. Robert Beyster, Ph.D. founded SAIC, the company that evolved into Leidos.
More about our history