Founders

The founders bringing the platform to market

EnVoy combines the scientists who created the production technology with an experienced entrepreneur who has built companies around university intellectual property. All three founders remain directly involved in commercialization and partner implementation.

Candace Fleming

Chief Executive Officer

Candace leads EnVoy’s strategy, commercialization, partnerships, licensing, and company operations. She has more than 20 years of experience building technology‑driven businesses and translating complex ideas into products and companies.

She co‑founded Crimson Hexagon around machine‑learning technology licensed from Harvard, wrote the original business plan, helped raise the company’s initial funding, and contributed to its growth through acquisition. She later served as CEO of Monti Kids and co‑founded H2ORS.

Candace holds an MBA from Harvard Business School and degrees in Industrial Engineering and English from Stanford University. She is also a Culinary Institute of America‑trained chef and an enthusiastic distance runner, although she is the first to admit that land speed is not her defining attribute.

Dr. Lee Bernstein

Chief Scientific Officer

Lee leads EnVoy’s scientific work in neutron physics, nuclear reactions, nuclear data, and isotope production. He is a Professor of Nuclear Engineering and Director of the Nuclear Technology Innovation Laboratory at UC Berkeley, as well as a Faculty Senior Scientist and Founder of the Joint Nuclear Data Program at UC Berkeley and Lawrence Berkeley National Laboratory.

Before joining Berkeley, Lee spent 20 years at Lawrence Livermore National Laboratory. He is a Fellow of the American Physical Society, has published more than 200 peer‑reviewed papers, and has mentored more than four dozen graduate students and postdoctoral researchers. He is a co‑inventor of EnVoy’s core production technology.

Before he became a nuclear physicist, Lee was a firefighter and an auto mechanic, and his favorite car of all time was his 1969 Dodge Dart. At Berkeley, he is easily recognized walking to work in his trademark hat.

Dr. Andrew Voyles

Senior Vice President of Engineering

Andrew leads EnVoy’s target engineering, experimental execution, cyclotron integration, and translation of research systems into manufacturable equipment. He is an Assistant Research Engineer at UC Berkeley and a co‑inventor of EnVoy’s core technology.

His work spans radioisotope production, cyclotron target design, fast‑neutron irradiation, nuclear‑reaction measurements, radiation oncology physics, and radiochemistry. He brings the hands‑on knowledge required to move a target from calculation and experiment into repeatable operation at a partner facility, and helps provide partners with solutions for the next emerging radioisotope to add to their production portfolio.

Outside the lab, Andrew is an excellent bread baker, opera lover, and devoted cat owner. His colleagues know that no Zoom meeting is complete without a feline cameo.

Inventor involvement matters

Radioisotope production depends on more than a reaction pathway or patent. Reliable operation requires target‑design judgment, experimental know‑how, and the ability to diagnose and solve challenges, which is why EnVoy’s founders work directly with customers to ensure success.

Meet with the EnVoy team