Amentum is a global provider of advanced engineering and technology solutions, primarily serving government and commercial clients in sectors critical to national security. Its work spans program management, systems engineering, and technical services, with a focus on delivering mission support for defense, intelligence, nuclear operations, and environmental management. The company traces its operational legacy back 117 years, though it was formally established in 2020.
The firm's scale is significant, with approximately 40,000 professionals operating worldwide. Its technical domains are concentrated in areas requiring high levels of discipline and specialized knowledge. Key capabilities include Critical Mission Support across national security and defense sectors, and Full-Lifecycle Program Support for complex facilities involved in nuclear energy and environmental remediation, covering design through decommissioning.
Amentum's industry verticals include nuclear energy, critical infrastructure, and strategic operations. The company states it applies technical excellence and operational discipline to deliver solutions for its clients, which include the United States government and its allies. Its geographic presence is worldwide.






