Executive Leadership
John Heller
Chief Executive Officer
John Heller is the Chief Executive Officer of Amentum, a leader in global engineering and technology solutions provider to the U.S. federal government and allies. His responsibilities include planning and directing the strategy and directions of the operating activities for all 53,000 employees in approximately 80 countries around the world.
Steve Arnette
Chief Operating Officer
Dr. Steve Arnette will serve as the chief operating office (COO) for the new Amentum after the Amentum-Jacobs Critical Missions Solutions business merger is finalized. In this role he will lead business operations and support strategic growth initiatives. . .
Travis Johnson
Chief Financial Officer
Travis Johnson is the Chief Financial Officer of Amentum. He is responsible for all financial activities of the company, including accounting, finance strategy, business operations, planning and analysis, treasury and investor relations...
Jill Bruning
Chief Technology Officer
Jill Bruning is the incoming Chief Technology Officer. She will oversee the new Amentum's technological landscape to effectively leverage technology in driving growth and achieving strategic goals...
Luis German
Chief Information Officer
Luis is the Chief Information Officer of Amentum, a leader in global engineering, project management and system integration for the U.S. government, our allies and Fortune 500 companies. He oversees the IT team, processes and technologies that enable the company’s business transformation and growth strategy.
Sean Mullen
Chief Growth Officer
Sean Mullen serves as the Chief Growth Officer at Amentum. He is responsible for leading the company's business development and growth strategy, including leveraging our world class capabilities and deep customer insight...
Roela Santos
Chief Marketing & Communications Officer
Roela serves as the Chief Marketing and Communications Officer at Amentum, a leader in global engineering, project management and solutions integration, trusted to modernize the most critical missions anywhere in the world. She is responsible for the strategy and execution of Amentum's marketing and communications organizations...
Stuart Young
Chief Legal Officer
Stuart leads the legal function for Amentum, providing advice on the full range of government contracting issues. He supervises company litigation and also...
Business Group Presidents
Dr. Karl Spinnenweber
President, Mission Solutions
Karl Spinnenweber is the President of Amentum’s Mission Solutions Group. In this capacity, Karl is directly responsible for leading the delivery of advanced technical...
Mark Walter
President, Engineering & Technology
Mark is President of the Amentum Engineering & Technology business. His business delivers engineering and technical services across…
Mark Whitney
President, Energy & Environment
Mark is the President of the Amentum Energy & Environment business, an organization that delivers engineering, consulting, project integration and technology solutions to clients around the world...
Adam Harrison
SVP, Strategy & Corporate Development
Adam Harrison serves as the senior vice president and head of strategy and corporate development for Amentum. In this role, Adam is responsible for leading the development and execution of Amentum’s corporate growth strategy including mergers and acquisitions (M&A) related initiatives.
Nathan Rutledge
SVP & Head of Investor Relations
Nathan Rutledge is Senior Vice President and Head of Investor Relations. He spearheads all investor relations activities and is responsible for articulating the long-term strategy, business model and financial performance to its shareholders...
Dr. Rob Smith
VP, Diversity, Equity & Inclusion
Dr. Rob Smith is Vice President of Diversity, Equity & Inclusion at Amentum. In this role, he is responsible for leading our diversity, equity and inclusion vision and strategy by developing and implementing programs and initiatives that advances Amentum’s business objectives and reinforces our organization’s culture.
Karina Vollmer
Chief Ethics & Compliance Officer
Karina is the Chief Ethics & Compliance Officer at Amentum. Her responsibilities include Amentum’s ethics and compliance program, Amentum’s Code of Conduct, as well as training the workforce on ethics and compliance issues and leading investigations as needed.