Christian Ledezma is an Associate Professor at the Pontificia Universidad Católica de Chile (PUC). He has a BS and an MS degree from that same university, and an MS and a Ph.D. degree from the University of California, Berkeley. He is currently the vice-president of ACHISINA, Chile’s Association of Earthquake Engineering, and an active member in the discussion and elaboration of Chilean seismic codes. At PUC he teaches courses in geotechnical earthquake engineering and deep foundations. He is currently the Head of the Structural and Geotechnical Engineering Department at PUC. Dr. Ledezma has conducted post-earthquake reconnaissance investigations following the last three major Chilean earthquakes (Maule 2010 Mw8.8, Iquique 2014 Mw8.2, and Illapel 2015 Mw8.4), and the Mw7.1 Puebla 2017 Mexico earthquake. His main areas of interest are soil-structure interaction, soil liquefaction, and geotechnical earthquake engineering.