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...

Darren Burton

Chief People Officer

Darren Burton is the Chief People Officer for Amentum. In this role he leads all aspects of the company’s talent strategy and talent management that supports a diverse global

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...

Jennifer Walsmith

President, Intelligence & Cybersecurity Business

Jennifer is President of the Amentum Intelligence & Cybersecurity business. She leads a global team that delivers advanced national security...

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 SVP of Strategy and Corporate Development at Amentum. He is responsible for developing and executing Amentum's strategic plan, identifying growth opportunities and optimizing the company's portfolio...

Nathan Rutledge

SVP & Head of Investor Relations

Nathan serves as the SVP and Head of Investor Relations at Amentum. In his role, he spearheads all investor relations activities and is responsible for articulating the long-term strategy...

Karina Vollmer

Chief Ethics & Compliance Officer

Karina is the Chief Ethics & Compliance Officer for Amentum, leading Amentum's ethics and compliance program, Amentum's Code of Conduct, as well as training the workforce...

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 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...

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.

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.