Leidos reported approximately $16.7 billion in 2024 revenue with a contract backlog exceeding $40 billion, indicating strong, multi‑year federal and allied government demand and reinforcing its position as one of the largest U.S. government IT and defense contractors.

Leidos has grown to roughly 47,000–50,000 employees worldwide and maintains a significant global presence serving U.S. federal agencies, allied militaries, and international civil and commercial customers across defense, intelligence, civil, and health sectors.

The 2016 merger of legacy SAIC’s services business with Lockheed Martin’s Information Systems & Global Solutions unit created Leidos as one of the defense industry’s largest IT and systems integration providers, cementing deep program and partnership linkages with prime defense and aerospace ecosystems.

Leidos emphasizes mission software, digital modernization and cyber, space and maritime, energy infrastructure, and managed health as five core growth engines, reflecting an ongoing pivot toward scalable digital platforms and resilient infrastructure offerings rather than purely labor-based services.

Leidos-developed air traffic management systems are reported to help control roughly 60% of the world’s air traffic, underscoring a deep operational role in global civil aviation infrastructure and critical safety systems.

Leidos organizes its operations into major divisions—Civil, Health, Advanced Solutions, and Defense & Intelligence—supporting missions from ISR, C2, and cyber to health IT and energy systems, which indicates a diversified but mission-focused operating model.

With a workforce on the order of 47,000–50,000 and continued positioning as a Fortune 500 technology and engineering employer, Leidos signals ongoing large-scale hiring and technical talent demand across defense, civil, health, and advanced solutions domains.