Guillaume Yersin (Vevey, 1981) studied Human Medicine at the University of Geneva. After obtaining a Bachelor in 2003, he then studied architecture at the ETH Zürich and at the Tokyo Institute of Technology. After experiences at Lacaton & Vassal in Paris and AMO in Rotterdam, he obtained a MSc. in Architecture from ETHZ in 2009. In 2012, he founded his own practice SAAS sàrl in Geneva. In parallel, Guillaume maintains his academical engagement as intense as possible. He has been teaching at ETH Zürich (2011-16), at TU Wien (2021-22), and at FHNW Basel (2024-25). He has been repeatedly invited as a guest critic at EPFL, HEAD, ETHZ and HEIA-Fribourg. He is currently Guest Professor at the TU Wien (2025-26).