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David Pen is an experienced environmental engineer specializing in polluted sites and soils, currently employed at SEMOFI since February 2019, where responsibilities include conducting studies related to environmental impacts. Prior to this role, David Pen completed an internship at Henkel Adhesives Technologies in 2018, focusing on surface treatment of metals. David Pen's professional journey began with a position at SYSTEME U from April 2015 to July 2018. Academic qualifications include a Master 2 in Géomatériaux et Environnement and a combined Licence in Chimie et Applications/Master in Risque et Environnement, both obtained from Université Paris-Est Marne-la-Vallée between 2014 and 2019.