Amentum Services Executive and Leadership Team

September, 2026

Leadership Overview

Amentum Services has 10 executives leading key functions including information technology, engineering innovation, financial management, operational excellence, and strategic marketing.

Focused on delivering advanced engineering and technology solutions, Amentum Services empowers global clients to solve complex challenges in science, security, and sustainability through relentless innovation and collaborative safety standards.

Leadership Roles at Amentum Services

  • Chief Financial Officer - Thorne Michael
  • Group Chief Financial Officer & Senior VP, Finance - Paul Pheeny
  • Chief Operating Officer - Steve Arnette
  • Chief Operating Officer, Hsetraining Development - Monica Ingle
  • Chief Information Officer - Luis German
  • Chief Technology Officer - Jill Bruning
  • Enterprise IT Chief of Staff - Martin Wohlgemuth
  • Chief Marketing Officer, Trianer - Gregory Owens
  • Senior Vice President, Chief of Staff - Joseph Ruffolo
  • Vice President and Chief Technology Officer - Intelligence and Cyber - Adi Karisik
  • Thorne Michael - Chief Financial Officer

    Thorne Michael, the Chief Financial Officer at Amentum Services, manages the fiscal health and long-term financial strategy of the enterprise. Overseeing capital allocation and budgetary planning, the Chief Financial Officer ensures that resources support the company's ambitious growth objectives in the engineering and security sectors. This role involves rigorous oversight of financial reporting and risk management to maintain transparency with stakeholders. By optimizing cost structures and improving operational margins, Thorne Michael strengthens the financial foundation necessary for sustained innovation. The Chief Financial Officer coordinates with other executive leaders to evaluate investment opportunities that align with the organization's core mission of safety and sustainability. Through disciplined fiscal stewardship, Michael supports the expansion of global operations and the successful execution of complex government contracts. This leadership role remains vital for maintaining the financial stability required to address the most significant challenges faced by the United States and its international allies.

    Paul Pheeny - Group Chief Financial Officer & Senior VP, Finance

    Paul Pheeny, the Group Chief Financial Officer & Senior VP, Finance at Amentum Services, oversees the financial operations and reporting for specific business groups within the organization. Managing the financial performance of large-scale engineering and technology contracts, the Group Chief Financial Officer & Senior VP, Finance ensures that all projects remain profitable and aligned with corporate fiscal goals. This role involves detailed analysis of project costs and revenue streams to support strategic decision-making. By implementing robust financial controls, Paul Pheeny maintains the integrity of the company's fiscal reporting and supports the overall financial health of the enterprise. The Group Chief Financial Officer & Senior VP, Finance works closely with operational leaders to optimize resource allocation and improve project efficiency. Through disciplined financial management, Pheeny enables the company to continue delivering innovative solutions for complex global challenges. This leadership role remains critical for sustaining the financial stability required to support the company's mission.

    Steve Arnette - Chief Operating Officer

    Steve Arnette, the Chief Operating Officer at Amentum Services, directs the execution of global operations and service delivery across all business units. Overseeing the daily performance of engineering and technology projects, the Chief Operating Officer ensures that safety, collaboration, and well-being remain central to every initiative. This role involves managing large-scale programs that support the security and sustainability goals of government clients. By streamlining operational processes, Steve Arnette enhances productivity and ensures that project milestones are met with precision. The Chief Operating Officer works closely with the executive leadership team to align operational capacity with strategic market demands. Through the implementation of best practices in project management, Arnette drives progress and maintains the high standards expected by the United States and its allies. This leadership position focuses on delivering consistent, high-quality results while navigating the complexities of large-scale, mission-critical engineering environments.
    Steve Arnette

    Monica Ingle - Chief Operating Officer, Hsetraining Development

    Monica Ingle, the Chief Operating Officer, Hsetraining Development at Amentum Services, manages the operational delivery of health, safety, and environmental training programs. Overseeing the development of curriculum and training standards, the Chief Operating Officer, Hsetraining Development ensures that all personnel are equipped with the skills necessary to maintain the company's rigorous safety culture. This role involves scaling training initiatives to support global operations and ensuring compliance with international security and sustainability standards. By optimizing the delivery of educational content, Monica Ingle enhances the operational readiness of teams working on complex engineering projects. The Chief Operating Officer, Hsetraining Development works with other leaders to integrate safety training into the broader corporate strategy. Through the continuous improvement of training methodologies, Ingle drives progress and supports the well-being of the workforce. This leadership position remains critical for upholding the company's commitment to safety and excellence in every environment.

    Luis German - Chief Information Officer

    Luis German, the Chief Information Officer at Amentum Services, directs the digital infrastructure and enterprise technology strategy. Overseeing the integration of advanced data systems, the Chief Information Officer ensures that all engineering and security platforms remain resilient against evolving cyber threats. This leadership role involves modernizing legacy frameworks to support global operations across diverse government and commercial sectors. By implementing scalable cloud solutions, Luis German optimizes internal workflows and enhances data accessibility for teams worldwide. The Chief Information Officer maintains alignment with the broader corporate mission by prioritizing secure, high-performance computing environments. Through the deployment of cutting-edge software tools, German drives operational efficiency and supports the company's commitment to technological excellence. This strategic focus on digital transformation enables the organization to maintain a competitive edge while addressing the most significant challenges in science and security for the United States and its allies.
    Luis German

    Jill Bruning - Chief Technology Officer

    Jill Bruning, the Chief Technology Officer at Amentum Services, architects the technical vision and innovation roadmap for the entire organization. Overseeing research and development initiatives, the Chief Technology Officer identifies emerging trends in engineering and sustainability to maintain market leadership. This role requires close collaboration with the executive team to align technical capabilities with the complex requirements of global security contracts. By fostering a culture of undaunted curiosity, Jill Bruning accelerates the delivery of innovative solutions that address critical infrastructure needs. The Chief Technology Officer manages the lifecycle of advanced technology projects, ensuring that every solution meets rigorous safety and performance standards. Through the application of boundless imagination, Bruning transforms conceptual designs into tangible progress for government clients. This leadership position directly influences the company's ability to tackle large-scale, high-stakes projects, ultimately securing the organization's reputation as a premier provider of advanced engineering and technology solutions.
    Jill Bruning

    Martin Wohlgemuth - Enterprise IT Chief of Staff

    Martin Wohlgemuth, the Enterprise IT Chief of Staff at Amentum Services, coordinates the strategic initiatives and operational workflows within the information technology division. Overseeing the alignment of IT projects with broader corporate goals, the Enterprise IT Chief of Staff facilitates communication between technical teams and executive leadership. This role involves managing complex cross-functional programs that support the company's advanced engineering and security infrastructure. By optimizing internal processes, Martin Wohlgemuth ensures that technology resources are deployed effectively to meet the needs of global operations. The Enterprise IT Chief of Staff monitors project progress and identifies opportunities for process improvement to enhance overall efficiency. Through meticulous planning and execution, Wohlgemuth supports the organization's commitment to technological innovation and operational excellence. This leadership role remains essential for maintaining the seamless integration of IT services across the enterprise, ultimately enabling the company to address the most significant challenges in science and security.

    Gregory Owens - Chief Marketing Officer, Trianer

    Gregory Owens, the Chief Marketing Officer, Trianer at Amentum Services, leads the brand strategy and market positioning for the company's specialized training and development services. Overseeing the communication of the organization's value proposition, the Chief Marketing Officer, Trianer ensures that the market understands the company's expertise in advanced engineering and security solutions. This role involves developing targeted campaigns that highlight the firm's commitment to safety, collaboration, and innovation. By analyzing market trends and client needs, Gregory Owens shapes the narrative that drives business growth and strengthens relationships with government and commercial partners. The Chief Marketing Officer, Trianer collaborates with other executives to ensure that marketing efforts align with the company's overall strategic objectives. Through the effective promotion of training capabilities, Owens expands the company's reach and reinforces its reputation as a leader in solving complex challenges. This leadership role directly impacts the organization's ability to attract new opportunities and maintain its competitive position.

    Joseph Ruffolo - Senior Vice President, Chief of Staff

    Joseph Ruffolo, the Senior Vice President, Chief of Staff at Amentum Services, directs the strategic planning and administrative operations for the executive office. Overseeing the execution of corporate priorities, the Senior Vice President, Chief of Staff ensures that all departments remain aligned with the company's mission of delivering advanced engineering and technology solutions. This role involves managing high-level projects and facilitating communication across the leadership team to drive organizational progress. By streamlining decision-making processes, Joseph Ruffolo enhances the efficiency of the executive function. The Senior Vice President, Chief of Staff monitors the implementation of strategic initiatives and provides critical support to ensure that the company meets its commitments to the United States and its allies. Through effective coordination and oversight, Ruffolo supports the organization's ability to address complex challenges in science, security, and sustainability. This leadership role remains vital for maintaining the operational focus required to achieve long-term success.

    Adi Karisik - Vice President and Chief Technology Officer - Intelligence and Cyber

    Adi Karisik, the Vice President and Chief Technology Officer - Intelligence and Cyber at Amentum Services, architects the technical strategy for intelligence and cybersecurity operations. Overseeing the development of advanced defense systems, the Vice President and Chief Technology Officer - Intelligence and Cyber ensures that the company remains at the forefront of security technology. This role involves managing complex projects that protect critical infrastructure and support the national security interests of the United States. By leveraging innovative technology solutions, Adi Karisik addresses the most significant cyber challenges faced by government clients. The Vice President and Chief Technology Officer - Intelligence and Cyber collaborates with other technical leaders to integrate intelligence capabilities into broader engineering projects. Through the application of relentless ambition, Karisik drives progress in the cyber domain and enhances the company's ability to deliver secure, reliable solutions. This leadership position remains essential for maintaining the organization's reputation as a trusted partner in global security.

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    Frequently Asked Questions Regarding Amentum Services Top Executives and Leadership Team

    Who leads Amentum Services?
    Amentum Services is led by Thorne Michael (Chief Financial Officer), along with executives such as Paul Pheeny (Group Chief Financial Officer & Senior VP, Finance) and Steve Arnette (Chief Operating Officer).
    Who is part of Amentum Services’s executive team?
    The executive team of Amentum Services includes leaders such as Thorne Michael (Chief Financial Officer), Paul Pheeny (Group Chief Financial Officer & Senior VP, Finance), Steve Arnette (Chief Operating Officer) and other senior executives.
    How many executives does Amentum Services have?
    Amentum Services has 10 executives leading key business areas.
    What roles are included in Amentum Services’s leadership team?
    The leadership team of Amentum Services includes roles such as Chief Financial Officer, Group Chief Financial Officer & Senior VP, Finance, Chief Operating Officer, Chief Operating Officer, Hsetraining Development, Chief Information Officer.