CACI International Inc | 255,636 followers on LinkedIn. Expertise and Technology for National Security | At CACI International Inc (NYSE: CACI), our 25,000 talented and dynamic employees are ever vigilant in delivering distinctive expertise and differentiated technology to meet our customers’ greatest challenges in national security. We are a company of good character, relentless innovation, and long-standing excellence. Our culture drives our success and earns us recognition as a Fortune World's Most Admired Company.