Sergej Warkentin is an accomplished project leader with extensive experience in the engineering and renewable energy sectors. Currently serving as Projektleiter at CUSTOMCELLS® since January 2022, Warkentin previously held project leadership roles at TÜV NORD EnSys GmbH & Co. KG from August 2016 to December 2021 and at TÜV Rheinland Industrie Service GmbH from October 2011 to July 2016. Early in the career, Warkentin worked as a Projektingenieur and gained experience as a student assistant at Deutsches Zentrum für Luft-und Raumfahrt e.V., as well as a student intern at SGS Germany GmbH focusing on offshore wind project certification. Warkentin holds a Master of Science degree in Composite Engineering from PFH Private Hochschule Göttingen and a Bachelor of Engineering in Renewable Energies from Fachhochschule Kiel. Further educational pursuits are ongoing at Kiel University.