Mitsuo Shimofuji

Co-founder, President and CEO, Board of Directors of ZettaJoule

Mitsuo Shimofuji leads the overall strategy, growth and advancement for commercial deployment of the company’s innovative nuclear energy technologies.

He guides, empowers and unifies a dynamic, globally sourced team of experts in nuclear energy, artificial intelligence, reactor technology, business and finance.

Drawing on his international experience leading large-scale projects and his multilingual capabilities, Mitsuo is able to build productive relationships with key government, industry and investment stakeholders.

He is wholly committed to ZettaJoule's mission to develop and deploy a fleet of commercially competitive small modular nuclear reactors to meet growing energy needs worldwide through clean, sustainable solutions.

Most notably

Mitsuo is a global executive with extensive experience in finance, strategy, and the development of large-scale industrial projects. He previously held leadership positions at Sumitomo Corporation, a Fortune Global 500 company, where he oversaw multibillion-dollar investments and mineral resource projects around the world.


He provides a truly global perspective on advancing ZettaJoule's vision for next-generation energy solutions. Mitsuo is fluent in English, Japanese, and Spanish, enabling effective engagement, collaboration, and leadership across international markets.

Professional experience

Mitsuo is a results-driven leader whose expertise in finance and strategy has directly contributed to the success of projects ranging from several hundred million to $8 billion.


During his tenure as Manager of Business Development, Non-Ferrous Metals at Sumitomo Corporation - one of the world's largest and most respected Fortune Global 500 companies - Mitsuo directed full-cycle development activities including acquisitions, divestitures, investments and strategic partnerships across world markets. He managed investments from $5 million in early-stage ventures to $8 billion projects in the development and operational stages.


Mitsuo previously served in a leadership capacity on Dynatec Madagascar’s $8 billion Ambatovy Project, one of the largest nickel and cobalt mining and refining ventures in the world. He held progressively senior roles with full accountability for the end-to-end supply chain of raw materials, overseeing a $400 million annual spend spanning critical commodities including hydrocarbons and complex chemicals. Throughout his tenure on the project, Mitsuo demonstrated a distinct talent for managing high-value, technically complex systems and developed a lasting commitment to decarbonization and the transition toward cleaner industrial energy systems.

Education

Mitsuo holds a bachelor’s degree in International Law from the University of Rikkyo – Japan.

More about Mitsuo

Of Peruvian and Japanese descent, Mitsuo brings a globally informed perspective to both his professional and personal life. Trilingual and culturally fluent, he lived throughout Latin America for nearly two decades - in Peru, Chile, Panama and Bolivia.

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