Amentum

Amentum is a Chantilly, Virginia-based government and commercial services contractor formed in 2020 from the spinout of Aecom's Management Services group. The company provides engineering, project management, and technology integration services across national security, defense, intelligence, space, and healthcare sectors. With over 53,000 employees operating in more than 70 countries, it reported $14.4 billion in revenue for fiscal year 2025 and is the second-largest government services contractor in the U.S. market after Leidos.