Our Leadership Team

YONG-JIANG HEI, M.D., Ph.D.

Chief Medical Officer

Dr. Hei has nearly 20 years of experience in pharmaceuticals and biotechnology.  Prior to Ambrx, Dr. Hei worked at Amgen for more than 9 years as an Executive Medical Director in global development where he led cross-functional teams to define product development strategies and clinical development plans for several late-phase oncology projects in various solid tumors.  Additionally, Dr. Hei spent three years in China as the medical head for Amgen China to build and establish a talented clinical medical team for Amgen China affiliate.  Before Amgen, Dr. Hei worked for Roche Laboratories, Inc., and Novartis oncology with increasing responsibilities in the capacity of US Medical Director for Roche, and Senior Global Brand Medical Director/Executive Director for Novartis Oncology where he led the development and execution of medical plans, expanded the investigator-initiated clinical research, and supported regulatory filings in the US, Japan, the EMEA, and China.  Dr. Hei received his medical degree from Shihezi Medical College in China, and graduate degrees from the West China University of Medical Sciences (M.Sc) and the University of British Columbia in Canada (Ph.D.).  He also trained in the Hospital for Sick Children in Toronto as a post-doctoral fellow in cancer biology.