Amentum is a premier global government and commercial services partner headquartered in Chantilly, Virginia. With a workforce of approximately 50,000 dedicated professionals, the company delivers a broad spectrum of services including engineering, project management, technology integration, logistics, and mission support. Amentum specializes in national security, critical infrastructure, environmental stewardship, and energy solutions, serving U.S. federal government agencies, allied governments, and commercial customers worldwide. The company is known for its commitment to safety, innovation, and operational excellence in tackling complex challenges.
The Chantilly headquarters serves as the central hub for Amentum's executive leadership, corporate strategy, global operations management, and key administrative functions.
The headquarters is situated in a modern office complex, likely featuring contemporary design, collaborative workspaces, and advanced technology infrastructure to support its global operations.
Amentum's HQ fosters a dynamic, mission-driven work culture emphasizing innovation, integrity, collaboration, and a strong commitment to client success and employee safety. The environment is professional and geared towards supporting complex, high-stakes projects.
Its location in the National Capital Region is significant for a major government contractor, facilitating close interaction with U.S. federal agencies. It serves as the nerve center for Amentum's global strategic initiatives and operational oversight.
Amentum operates in numerous countries across North America, Europe, Asia, Africa, and Australia, supporting critical missions for government and commercial clients. Functions supported globally include engineering and design, project and program management, IT and cyber security, logistics and supply chain management, asset management, environmental services, nuclear operations, and national security solutions on a global scale.
4800 Westfields Blvd, Suite 400
Chantilly
Virginia
USA
Address: Specific addresses vary by project; Amentum has a significant presence in and around Aiken, SC.
Serves as a key operational hub for Amentum's extensive work in the Southeastern U.S. nuclear and environmental sector, managing complex, long-term government contracts.
Address: Multiple office locations in the Germantown/Gaithersburg area.
Acts as a strategic center for engaging with federal government clients, delivering technology-driven solutions and mission support in the National Capital Region.
Address: Key offices located in Warrington, Cheshire, supporting UK operations.
Functions as Amentum's primary base for operations in the United Kingdom and parts of Europe, focusing on high-hazard industries and national security programs.
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As of April 2025, Amentum' leadership includes:
Amentum has been backed by several prominent investors over the years, including:
Amentum has made strategic appointments to bolster its leadership in key growth areas such as strategy and innovation. The company is also undergoing a significant merger with Jacobs' Critical Mission Solutions, which will involve future leadership integration.
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Amentum typically utilizes a standard corporate email format, most commonly [first_initial][last] or [first].[last]@[companydomain].com. Based on common patterns and public profiles, the [first].[last] format is prevalent.
[first].[last]@amentum.com
Format
jane.doe@amentum.com
Example
90%
Success rate
Amentum News / Business Wire • February 20, 2024
Jacobs, Amentum, Carlyle, and PAI Partners announced definitive agreements for Jacobs to separate its Critical Mission Solutions (CMS) and Cyber & Intelligence businesses, which will then be merged with Amentum. The combined organization, a privately-held, independent technology solutions prime, will be acquired by Carlyle and PAI Partners. John Heller, current CEO of Amentum, will be CEO of the combined entity....more
Amentum News • October 24, 2023
Amentum announced the appointment of Dr. Robie I. Samanta Roy (Robby) as Chief Strategy and Innovation Officer. In this role, Dr. Samanta Roy will lead Amentum’s strategic growth initiatives, further develop the company’s technology-enabled solutions, and foster a culture of innovation....more
Amentum News • January 9, 2024
Amentum was awarded a $995 million indefinite-delivery/indefinite-quantity (IDIQ) contract by the U.S. Air Force to provide agile combat support services. This contract aims to enhance mission readiness and operational capabilities for the Air Force across various global locations....more
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