Pierre HASSOLD joined T/E/S/S in 2017 after a short internship in T/E/S/S and many experiences in architects' offices.

He holds a double qualification, graduating as an architect  from the Ecole Nationale Supérieure d'Architecture de la Ville et des Territoires de Marne-la-Vallée (EAMVL) in 2013, and as a civil engineer from the Ecole Nationale des Ponts et Chaussées in 2016.