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Lester Ullmann has a background in energy science and technology, holding a Master of Science degree from ETH Zurich. Lester has worked as a Junior Projektleiter Energie und Gebäudetechnik at Tend AG since January 2023. Prior to that, Lester gained experience as a Wissenschaftlicher Mitarbeiter and Wissenschaftliche Assistenz I at Hochschule Luzern and ETH Zurich, respectively.