Leidos is a Fortune 500 innovation company with 47,000 employees worldwide, founded in 1969 by J. Robert Beyster, Ph.D. as Science Applications International Corporation (SAIC). The company addresses national security and health challenges through advanced technology solutions, serving government and commercial customers with digital and mission innovations built on scientific and technical expertise.
The threat model here is expansive: national security infrastructure that needs hardening, critical health systems requiring protection, and government operations that can't afford downtime or breach. Leidos operates at the intersection of cutting-edge science and technology, applying technical solutions to problems where failure isn't an academic exercise. Their work spans both the defense industrial base and commercial sectors, requiring teams fluent in compliance frameworks, classified environments, and operational technology security.
What sets the company apart is its scale and legacy - over five decades of applying scientific rigor to critical infrastructure problems. The original vision was creating a space where employees could deploy their technical expertise on genuinely difficult challenges, with an innovative approach to employee ownership that shaped the company's early culture. Today, that translates to work on systems where security isn't a feature but a foundational requirement, from mission-critical government platforms to health infrastructure that handles sensitive data at scale.