Benjamin Letessier has been an apprentice engineer at T/E/S/S since 2024.

He graduated from Sorbonne University in 2023 with a degree in Chemistry, before enrolling in a Master’s programme in Sustainable Construction at CY Cergy Paris University. During this programme, he joined T/E/S/S within the Environmental Engineering team as part of his apprenticeship.

Following the completion of this Master’s degree, he is continuing his education through the Specialized Master’s programme “Expert in Sustainable Housing and Construction” at ESTP Paris.

His scientific background enables him to address the challenges of climate change by understanding the underlying physical and chemical processes, and to translate this knowledge into decarbonisation strategies for the construction sector.

Within T/E/S/S, Benjamin Letessier primarily works on Life Cycle Assessment (LCA) studies for façade projects and on environmental impact assessments, with particular attention given to refurbishment and rehabilitation projects. He also conducts complementary research on specific construction materials and techniques.