Dr. Christopher Thellen holds the position of Product Development Engineer for Endurans Solar, in the area of photovoltaic films and sheet. Christopher has spent over 20 years of his career in research and development roles for the U.S. Army Natick Soldier Center, Metabolix Incorporated and Tomark-Worthen LLC. Dr. Thellen has over 5 years of experience in photovoltaic backsheet and helped develop the first co-extruded backsheet for Tomark-Worthen in 2018. Since the formation of Endurans Solar in 2021, Christopher has begun work with his new global colleagues in backsheet process development as well as new research and development initiatives within the new company.