Leidos is an American technology, engineering and science company that works primarily with government customers in defense, intelligence, civil agencies…
Leidos is an American technology, engineering and science company that works primarily with government customers in defense, intelligence, civil agencies and health. It traces its origins to Science Applications International Corporation, founded in 1969 by physicist J. Robert Beyster, and took the Leidos name in 2013 when SAIC separated into two independent public companies, with Leidos retaining the larger solutions business and the SAIC name going to the services spin off.
The defense and intelligence business delivers command and control systems, sensors, signal processing, electronic warfare, undersea and maritime systems, cyber operations and mission software for the United States Department of Defense, the intelligence community and allied militaries. Work in this segment ranges from long term platform sustainment through to rapid prototyping of new capability, and a substantial portion is performed on classified programmes.
The civil segment covers air traffic management, where Leidos supplies automation systems used by the Federal Aviation Administration and by air navigation service providers in other countries, alongside border protection, transportation security screening equipment deployed in airports and ports, energy grid modernisation, and scientific and laboratory support for agencies such as the Department of Energy and the National Aeronautics and Space Administration.
Health is a distinct and large part of the business. Leidos provides clinical services, medical examinations for veterans and service members, occupational health programmes, and health information systems, including long running support for the Department of Veterans Affairs and the military health system. This segment employs clinicians and health operations staff as well as software engineers, which makes the workforce broader than a conventional defense contractor.
The company has grown substantially through acquisition. It absorbed the information systems and global solutions business of Lockheed Martin in 2016, acquired Dynetics in 2020 to add hypersonics, space systems and missile defense engineering, and purchased security detection and automation businesses from L3Harris to strengthen its screening portfolio. More recent additions have extended its work in airborne intelligence platforms and digital modernisation.
Much of the work requires United States citizenship and a security clearance, and a substantial share of employees hold one, which shapes both hiring and where work can be performed. Roles span systems, software, mechanical, electrical and aerospace engineering, systems integration and test, cyber and information security, data science and artificial intelligence, modelling and simulation, clinical and health services, logistics, contracts, and programme management. Sites are concentrated in the United States, with significant operations in the United Kingdom and Australia and smaller presences in other partner nations.
As a verified employer on RefOpen, Leidos employees can refer prospective candidates for open engineering, technology, health and mission support roles.
Leidos operates in defense and government technology, is headquartered in Reston, Virginia, USA, employs around 10,001+ people. 13 Leidos roles have been posted on RefOpen in the last 30 days.
Recent Leidos openings include Staff Cyber Security Engineer, Change Network Engineer, Portfolio Manager, Principal Solid Propulsion Engineer and Senior Mechanical. A referral matters most for roles like these, where the applicant pool is large and a recruiter decides in seconds whether to open your resume. Most of these roles are based in Madison.
RefOpen connects job seekers with verified Leidos employees who can submit an internal referral for open roles. A referral pushes your application to the top of the recruiter's list and improves your odds of landing an interview.
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