Fermilab Executive and Leadership Team

July, 2026

Leadership Overview

Fermilab has 8 executives leading key functions including strategy, operations, finance, technology, and human resources.

Driven by scientific discovery, Fermilab is dedicated to advancing the frontiers of knowledge in high-energy particle physics, fostering innovation, and contributing to national scientific leadership.

Leadership Roles at Fermilab

  • Chief Executive Officer - Ali Nipadimi
  • Chief Financial Officer - Brett Bosley
  • Deputy Chief Operating Officer At Fermi National Accelerator Laboratory - Marc Clay
  • President - Susan Dahl
  • Chief of Staff - Hema Ramamoorthi
  • Chief Technology Officer - Anna Grassellino
  • Deputy Chief Human Resources Officer - Jennifer Gondorchin
  • Chief Human Resources Officer - Velma Gordon
  • Ali Nipadimi - Chief Executive Officer

    Ali Nipadimi, the Chief Executive Officer at Fermilab, directs the overarching strategy and vision for the laboratory's high-energy particle physics research. Nipadimi guides the institution's scientific direction, ensuring alignment with national research priorities and fostering an environment of groundbreaking discovery. This leadership role involves setting ambitious goals for future experiments and technological advancements. Overseeing all major initiatives, Ali Nipadimi ensures the laboratory maintains its position at the forefront of global particle physics research. The Chief Executive Officer's responsibilities extend to cultivating key partnerships with other research institutions and government agencies, driving collaborative efforts that expand the scope and impact of Fermilab's scientific endeavors. Nipadimi's strategic oversight is critical for securing funding and resources necessary to pursue complex, long-term research projects.

    Brett Bosley - Chief Financial Officer

    Brett Bosley, the Chief Financial Officer at Fermilab, directs all financial operations, budgeting, and fiscal planning for the United States Department of Energy national laboratory. Bosley manages the institution's financial health, ensuring robust fiscal controls and strategic resource allocation to support high-energy particle physics research. This leadership position involves overseeing accounting, financial reporting, and investment strategies. Driving financial sustainability, Brett Bosley ensures that all expenditures align with research objectives and regulatory requirements. The Chief Financial Officer's responsibilities include developing long-term financial forecasts and managing relationships with funding agencies to secure necessary capital. By optimizing financial performance and mitigating fiscal risks, Bosley directly supports Fermilab's mission of scientific advancement and technological innovation.
    Brett Bosley

    Marc Clay - Deputy Chief Operating Officer At Fermi National Accelerator Laboratory

    Marc Clay, the Deputy Chief Operating Officer At Fermi National Accelerator Laboratory, supports the operational leadership in managing the laboratory's extensive facilities and infrastructure. Clay contributes to the efficient execution of daily operations, ensuring that research activities are supported by robust logistical and technical services. This role involves overseeing aspects of facility management, safety protocols, and resource deployment critical for high-energy particle physics experiments. Driving operational excellence, Marc Clay assists in optimizing workflows and implementing process improvements across various departments. The Deputy Chief Operating Officer's responsibilities extend to ensuring compliance with environmental and safety regulations, safeguarding both personnel and the laboratory's advanced equipment. Clay's contributions are fundamental to maintaining the seamless functioning of Fermilab's research environment.

    Susan Dahl - President

    Susan Dahl, the President at Fermilab, provides executive leadership and strategic direction, working closely with the Chief Executive Officer to advance the laboratory's mission in high-energy particle physics. Dahl plays a pivotal role in shaping the institution's long-term vision and fostering an environment conducive to scientific breakthroughs. This position involves overseeing key strategic partnerships and ensuring the laboratory's continued impact on the global scientific community. Driving organizational growth and innovation, Susan Dahl contributes to initiatives that enhance Fermilab's research capabilities and operational efficiency. The President's responsibilities extend to representing the laboratory in high-level discussions and advocating for its scientific pursuits. Dahl's leadership is instrumental in maintaining Fermilab's status as a premier research institution.

    Hema Ramamoorthi - Chief of Staff

    Hema Ramamoorthi, the Chief of Staff at Fermilab, provides direct support to the Chief Executive Officer, managing critical operational workflows and strategic initiatives. Ramamoorthi ensures seamless execution of the laboratory's mission by coordinating cross-departmental efforts and facilitating communication across all levels of leadership. This role involves streamlining administrative processes and optimizing resource allocation to support Fermilab's high-energy particle physics research. Overseeing special projects and acting as a key liaison, Hema Ramamoorthi drives progress on critical organizational objectives. The Chief of Staff's influence extends to advising on policy development and implementing best practices to enhance operational efficiency. By managing key stakeholder relationships and ensuring timely project completion, Ramamoorthi directly contributes to the laboratory's scientific output and overall effectiveness.

    Anna Grassellino - Chief Technology Officer

    Anna Grassellino, the Chief Technology Officer at Fermilab, spearheads the development and implementation of cutting-edge technologies essential for high-energy particle physics research. Grassellino drives innovation in scientific instrumentation, computing infrastructure, and advanced experimental techniques. This role involves identifying emerging technological trends and translating them into practical applications that advance Fermilab's scientific mission. Overseeing the technology roadmap, Anna Grassellino ensures the laboratory remains equipped with state-of-the-art tools for discovery. The Chief Technology Officer's focus extends to fostering a culture of technological excellence and collaboration, both internally and with external partners. By championing new technological solutions, Grassellino directly enables groundbreaking research and reinforces Fermilab's global leadership in particle physics.

    Jennifer Gondorchin - Deputy Chief Human Resources Officer

    Jennifer Gondorchin, the Deputy Chief Human Resources Officer at Fermilab, supports the strategic direction of human capital management, focusing on talent acquisition, employee development, and organizational effectiveness. Gondorchin assists in implementing HR policies and programs that foster a productive and inclusive work environment, crucial for the laboratory's scientific endeavors. This role involves contributing to initiatives that enhance employee engagement and support the specialized needs of researchers and technical staff. Overseeing key HR functions, Jennifer Gondorchin ensures compliance with labor laws and promotes best practices in personnel management. The Deputy Chief Human Resources Officer's efforts are vital in attracting and retaining the highly skilled workforce required for Fermilab's complex research projects. Gondorchin's work directly impacts the operational capacity and scientific output of the laboratory.

    Velma Gordon - Chief Human Resources Officer

    Velma Gordon, the Chief Human Resources Officer at Fermilab, directs the comprehensive human resources strategy, focusing on talent management, employee relations, and organizational development. Gordon cultivates a supportive and high-performing work culture essential for attracting and retaining top scientific and technical talent. This leadership position involves overseeing recruitment, compensation, benefits, and professional development programs tailored to the unique needs of a national laboratory. Driving strategic HR initiatives, Velma Gordon ensures that Fermilab's workforce is equipped with the skills and resources necessary to achieve its ambitious research goals. The Chief Human Resources Officer's oversight is critical for fostering employee engagement, promoting diversity and inclusion, and ensuring compliance with all relevant employment regulations. Gordon's leadership directly impacts the laboratory's ability to conduct world-class particle physics research.

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    Frequently Asked Questions Regarding Fermilab Top Executives and Leadership Team

    Who leads Fermilab?
    Fermilab is led by Ali Nipadimi (Chief Executive Officer), along with executives such as Brett Bosley (Chief Financial Officer) and Marc Clay (Deputy Chief Operating Officer At Fermi National Accelerator Laboratory).
    Who is part of Fermilab’s executive team?
    The executive team of Fermilab includes leaders such as Ali Nipadimi (Chief Executive Officer), Brett Bosley (Chief Financial Officer), Marc Clay (Deputy Chief Operating Officer At Fermi National Accelerator Laboratory) and other senior executives.
    How many executives does Fermilab have?
    Fermilab has 8 executives leading key business areas.
    What roles are included in Fermilab’s leadership team?
    The leadership team of Fermilab includes roles such as Chief Executive Officer, Chief Financial Officer, Deputy Chief Operating Officer At Fermi National Accelerator Laboratory, President, Chief of Staff.