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Xipeng (Stephen) Liu has extensive work experience in the field of research and development. Xipeng (Stephen) is currently employed at Barrday Inc. as the Vice President of R&D since January 2023. Before this role, they worked as the Director of R&D at Barrday Inc. from July 2021 to January 2023. Prior to joining Barrday Inc., they worked at Saint-Gobain Life Sciences as the Global Technology Platform Leader from April 2019 to July 2021. Xipeng (Stephen) also has a long history with Saint-Gobain Performance Plastics, where they held various positions including Principal Scientist in Life Sciences from February 2015 to July 2021, R&D Group Leader in Composite from August 2010 to January 2015, and Senior Research Engineer from January 2009 to August 2010. Before their tenure at Saint-Gobain, they worked at Arkwright as the Lead Product development Chemist from 2005 to 2008.

Xipeng (Stephen) Liu completed their Bachelor of Science degree in material science at the University of Science and Technology of China from 1995 to 2000. Xipeng (Stephen) then pursued further education and obtained their Ph.D in Chemistry from Brown University between 2000 and 2005. In addition to their formal education, Xipeng (Stephen) Liu has also acquired several certifications. These include "Biomanufacturing for the Non-Specialist" from Worcester Polytechnic Institute, "Hands-on cGMP Biomanufacturing" from NC State University, "Situational Leadership" from Effective Training Associates, Inc, and "The essentials of silicone elastomers" from the University of Wisconsin-Milwaukee. The specific months and years of when these certifications were obtained are not provided.