Executive Leadership
John Heller
Chief Executive Officer
John is the Chief Executive Officer of Amentum, which provides a broad array of technical and management services to the U.S. federal government and other national governments worldwide. His responsibilities include…
Jill Bruning
President, Engineering, Science & Technology
Jill Bruning is the President of Amentum’s Engineering, Science and Technology Group. Her business delivers engineering and technical services across the full engineering life cycle supporting scientific research and development, technology integration, digital engineering, C5I, training, data analytics, cyber security, and business process outsourcing.
Dr. Karl Spinnenweber
President, Critical Missions
Karl Spinnenweber is the President of Amentum’s Critical Missions Group. In this capacity, Karl is directly responsible for leading the delivery of advanced technical solutions and services to Amentum’s client base worldwide. With an international workforce of more than 24,000; the Critical Missions Team provides ...
Mark Whitney
President, National Security
Mark is the President of the Amentum National Security group, where he oversees the day-to-day operations; manages profit and loss, strategic initiatives, and business development activities; and oversees administrative and operations support functions for Amentum’s work for clients in the United States, ...
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.
Travis Johnson
Chief Financial Officer
Travis Johnson is the Chief Financial Officer (CFO) at Amentum responsible for all financial activities of the company, including accounting, finance strategy, business operations, planning and analysis, compliance, tax, and treasury.
Sean Mullen
EVP, Business Development
Sean Mullen is Executive Vice President of business development (BD) 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 to drive differentiated solutions that support our customer’s mission objectives.
Roela Santos
SVP, Marketing & Communications
Roela is a global communications and marketing executive with a 28-year record of advancing business strategy and building brands.
Stuart Young
EVP, General Counsel
Stuart leads the legal function for Amentum, providing advice on the full range of government contracting issues. He supervises company litigation and also provides support in the areas of labor and employment law, compliance, export control, and international law.
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.
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.
Jeff Treffinger
SVP, Environmental Health & Safety
Jeff serves as Senior Vice President of Environmental, Health and Safety (EHS) at Amentum and has led the EHS programs since 2010. He has dedicated his entire career to leading EHS and quality programs in support of military, government and commercial operations and led multiple successful pursuits of EHS & quality management systems certifications.
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.