Tom Marcille is vice president of reactor technologies for Holtec International. In this role, he oversees the development and delivery of Holtec’s SMR-160, a passive light water small modular reactor. He is also the deputy council secretary of HI-STAC, Holtec’s SMR Technical Advisory Council. Additionally, Marcille is often called upon to serve as the executive sponsor for large and complex projects.

Professional History

Marcille has over three decades of service in the nuclear energy industry and is a distinguished veteran in the field of cutting-edge nuclear reactor advancement and development.  

Prior to joining Holtec, Marcille held executive, senior and principal engineering positions with General Electric (GE) Hitachi Nuclear, Los Alamos National Lab and NuScale Power. At GE, he served as the chief technologist and engineer responsible for the design of control blades, the design and performance of nuclear fuel, spent fuel criticality and thermal management, nuclear cross-sections, and deterministic and stochastic methods. At the Los Alamos National Lab, he was the chief engineer responsible for the design, analysis and testing of advanced reactors for commercial, military and special purpose reactor programs. At the start up of NuScale Power, Marcille served as chief operating officer and vice president of engineering. In this role, he successfully built NuScale Power from the ground up, managing its staffing, infrastructure and product design and engineering development.

Education

Marcille received a Bachelor of Science degree in nuclear engineering from the University of Florida (1987).