Full-Time
Global engineering and mission-support services contractor
$170k - $210k/yr
No H1B Sponsorship
Chantilly, VA, USA
In Person
Three to five days on-site per week.
US Top Secret Clearance Required
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Amentum provides engineering, technology, and critical mission support for government and commercial clients in defense, space, intelligence, and environmental sectors. It works by combining services such as aviation and logistics, engineering, systems integration, cyber and intelligence support, and environmental solutions across a global workforce. The company grew by acquiring DynCorp International and PAE, then merged with Jacobs’ Critical Mission Solutions and Cyber & Intelligence units to become a large, publicly traded contractor (AMTM) on the NYSE. Compared with competitors, Amentum leverages a broad scale, diversified capabilities, and long-standing relationships with national security and space programs to handle complex, multi-domain missions. Its goal is to solve major national and global challenges by delivering integrated engineering, technology, and mission-support solutions at scale for governments and allied nations.
Company Size
10,001+
Company Stage
Post IPO Equity
Headquarters
Germantown, Maryland
Founded
2020
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Hybrid Work Options
Maverick Capital Ltd. purchased a new position in shares of Amentum Holdings, Inc. (NYSE:AMTM – Free Report) in the 1st quarter, according to the company in its most recent filing with the SEC. The institutional investor purchased 46,335 shares of the company’s stock, valued at approximately $1,208,000. Other hedge funds have also made changes to […]
Plan to build Port of Workington site to treat Japanese nuclear reactor coolant. Cavendish Nuclear and Amentum, in a joint venture (JV), have been selected to build a new facility at the Port of Workington to treat sodium coolant from a nuclear reactor in Japan. The work is subject to planning and regulatory permissions, and would treat material from the Monju Prototype Fast Breeder Reactor (FBR), in Fukui Prefecture, Japan. It is part of a wider project to support the Japan Atomic Energy Agency (JAEA) with the decommissioning of the Monju reactor, which was closed in December 1995, but was restarted in 2010. The new facility will be built and operated by a JV formed of the two firms and will "support skilled jobs both directly and more widely across the supply chain, contributing significantly to the local economy", said a statement from Cumberland Council, which Council owns and operates the port. It added that the plans for the sodium treatment facility follows on from works carried out at the port and nearby Oldside to clear land in preparation for other development in future. Thomas Armstrong Construction is carrying out the land clearance work for Cumberland Council and the work is being funded by approximately £4.5M in government funding as part of the Workington Town Deal. The land clearance works are part of "a wider regeneration project which includes the Workington Gateway and the opening up of better transport links in the town centre", the council said. Related questions you can explore with Ask NCE, our new AI search engine. They are also part of a long-term initiative to turn the area into a hub for "clean energy, manufacturing and intermodal logistics which will support wider regional growth," it said. A Cavendish Nuclear and Amentum spokesperson said: "Cavendish Nuclear and Amentum are grateful to Cumberland Council and the Port's management team for their support in enabling our design and construction programme to move to the next phase. "We are fully committed to adding real social value toWest Cumbria and this new venture will contribute to the regeneration [of] the Port of Workington and support the local economy."
Amentum CEO John Heller receives 10th Wash100 Award. John Heller, CEO of Amentum, has accepted the 2026 Wash100 Award, marking his 10th win and fourth consecutive selection to Executive Mosaic's annual list of the most influential leaders in government contracting. The award was presented by Jim Garrettson, CEO of Executive Mosaic and founder of the Wash100 Award, during a visit to Amentum's office. Why did John Heller win the 2026 Wash100 Award? Executive Mosaic recognized Heller for driving Amentum's expansion across nuclear energy, digital infrastructure and space systems while guiding the company through its first full year as a public entity. His leadership secured major 2025 contracts supporting national security and global operations, including: * Counter-threat finance: A $247.6 million contract award. * MQ-9 Reaper maintenance: A $995 million Air Force award for fleet support. * Digital infrastructure: A $120 million Z-series chipset processor capacity services contract from the Defense Information Systems Agency. This momentum continued into 2026 with expanded work under the Navy's WEXMAC TITUS program and a $656.4 million base operations support contract at Naval Support Facility Diego Garcia. Heller has been instrumental in expanding Amentum's nuclear capabilities, overseeing a major 2025 strategic push across U.S. and European markets. A key milestone in this expansion was the establishment of the Oak Ridge Nuclear Center of Excellence, which provides the engineering and operational foundation for the company's global power projects. Who is John Heller? As CEO and a board member of Amentum, John Heller leads a global workforce of approximately 53,000 employees across 80 countries. A veteran executive in the government services sector, he previously served as CEO and president of PAE, where he guided the company through its public listing. His career includes leadership roles at Engility, Harris and Netco, complemented by early experience as a U.S. Army logistics officer and a management consultant at Deloitte. Heller is a graduate of the U.S. Military Academy at West Point and holds a master's degree in business administration from the University of Pittsburgh. What is the Wash100 Award? The Wash100 Award honors executives and officials whose leadership, innovation and strategic direction shape federal priorities and deliver measurable mission impact. Widely regarded as one of the GovCon sector's most prestigious recognitions, the award highlights individuals driving progress across national security and technology modernization. Heller's 10th Wash100 recognition underscores his long-standing influence and his role in positioning Amentum for sustained growth across energy, defense and digital infrastructure. Executive Mosaic congratulates John Heller on his 2026 Wash100 Award. Share the Post:
Amentum secures $425 million contract to support California's aerial firefighting operations. * Business Wire * 1 hr ago CHANTILLY, Va.-(BUSINESS WIRE)-Apr 7, 2026- Amentum (NYSE: AMTM) has been awarded a $425 million contract by the California Department of Forestry and Fire Protection (CAL FIRE) to deliver aerial firefighting support to the state. The initial three-year contract includes two option years. California Department of Forestry and Fire Protection (CAL FIRE) The partnership underscores the company's commitment to supporting California in its battle against wildfires. "Amentum is uniquely positioned to manage the training, scheduling and mobilization of pilots and mechanics to deliver aviation solutions that protect California's environment and critical infrastructure," said Dr. Karl Spinnenweber, president of Amentum's Mission Solutions business. "Amentum brings advanced technical solutions, including AI-driven predictive maintenance, repair and overhaul services, as well as world-class logistics and deployment expertise to help the state safeguard communities and its economy." Amentum will deliver a full spectrum of aviation expertise, ranging from program management and training to the operational deployment of 350 elite pilots and mechanics. Their mission is to bolster California's firefighting capabilities in the face of an escalating wildfire crisis, ensuring the state's fleet of specialized aircraft remains fully operational and ready to deploy. "Today's fire season is no longer seasonal. It's a year-round battle that grows more dangerous with each passing year," said Spinnenweber. "With decades of aviation excellence, we are committed to ensuring aircraft and crews are ready at a moment's notice, both here at home and globally, for the toughest, most vital operations." About Amentum Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Its people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Its commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, The Daily Advance has approximately 50,000 employees in more than 70 countries across all 7 continents. Visit The Daily Advance at amentum.com to learn how The Daily Advance advance the future together. Follow Amentum on LinkedIn Forward-Looking Statements This press release contains or incorporates by reference statements by Amentum Holdings, Inc. (the "Company") that relate to future events and expectations and, as such, constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and other federal securities laws. These forward-looking statements may be characterized by terminology such as "believe," "project," "expect," "anticipate," "estimate," "forecast," "outlook," "target," "endeavor," "seek," "predict," "intend," "strategy," "plan," "may," "could," "should," "will," "would," "will be," "will continue," "will likely result," or the negative thereof or variations thereon or similar terminology generally intended to identify forward-looking statements. All statements, other than historical facts, including, but not limited to, statements regarding the anticipated work and revenue under the awarded contract, and the Company's objectives, expectations and intentions, applicable legal, economic and regulatory conditions, and any assumptions underlying any of the foregoing, are forward-looking statements. A number of important factors could cause actual results to differ materially from those contained in or implied by these forward-looking statements, including those factors discussed in its filings with the Securities and Exchange Commission (SEC), including, among others: the occurrence of an accident or safety incident; the ability of the Company to control costs, meet performance requirements or contractual schedules; and other factors set forth under Item 1A, Risk Factors in its Annual Report on Form 10-K for the fiscal year ended September 27, 2024, which can be found at the SEC's website at www.sec.gov or the Investor Relations portion of its website at www.amentum.com. Any forward-looking statement speaks only as of the date on which it is made, and the Company assumes no obligation to update or revise such statement, whether as a result of new information, future events or otherwise, except as required by applicable law. Kristin Jones Nathan Rutledge KEYWORD: CALIFORNIA VIRGINIA UNITED STATES NORTH AMERICA INDUSTRY KEYWORD: ENVIRONMENT CONTRACTS HOMELAND SECURITY CONSULTING OTHER ENERGY PROFESSIONAL SERVICES PUBLIC POLICY/GOVERNMENT ENERGY STATE/LOCAL DEFENSE PUB: 04/07/2026 08:30 AM/DISC: 04/07/2026 08:30 AM Special editions.
Booz Allen Hamilton led government and technical consulting stocks in Q4, despite revenues of $2.62 billion missing estimates by 3.8%. The sector overall posted a weak quarter, with the seven tracked companies missing revenue consensus by 0.8% on average. Amentum reported revenues of $3.24 billion, down 5.2% year on year and missing analysts' expectations by 2.5%. The company delivered weaker-than-expected results with revenue guidance also falling short. Its shares have declined 28.1% since reporting. The sector faces uncertainty as the Trump administration signals potential cuts to government spending, though demand for cybersecurity, AI-driven defence solutions and sustainability consulting is expected to provide long-term growth. Share prices across the sector have averaged a 10.5% decline since latest earnings results.