Meet Demetrix management

Our executive team


Jeff Ubersax, PhD, CEO

Jeff’s leadership has helped grow fledgling businesses. As the VP of R&D at Amyris, he developed and led the company’s genome and strain engineering platform. He also engaged with customers and investors to help translate how biotechnology can be used to drive growth. Jeff was a postdoctoral scholar at Stanford University. He received his Ph.D. in Biochemistry and Molecular Biology from the University of California, San Francisco and his B.S. from the University of North Carolina, Chapel Hill.


Darren Platt, PhD, President

In addition to his strategic role as President, Darren is responsible for building our automation, computing and data platform. Prior to his work at Demetrix, he was VP of R&D at Amyris, Director of Research at 23andMe, Head of Bioinformatics at the Joint Genome Institute and Director of Bioinformatics at Exelixis. Darren received his Ph.D. in Computer Science at Monash University in Melbourne, Australia and did postdoctoral research at the Sanger Institute in Cambridge.


Cynthia Bryant, Chief Business Officer

Cynthia is responsible for building our commercial business, including strategy and business development, marketing and branding. Previously, Cynthia has spent over 12 years building new biotechnology businesses and forging partnerships with some of the world’s largest consumer goods companies. Cynthia earned her B.S. in engineering at North Carolina State University and her MBA from the University of California, Berkeley.

Board of directors

William Haseltine, MD, Founder

William Haseltine, MD, Founder

Jay Keasling, PhD,  Founder

Jay Keasling, PhD,

Marc Riiska,  Tuatara Capital

Marc Riiska,
Tuatara Capital

Jeff Ubersax,  CEO Demetrix

Jeff Ubersax,
CEO Demetrix

Patrick Zhang,  Horizons Ventures

Patrick Zhang,
Horizons Ventures