Guillermo Diaz-Fanas is a Senior Geotechnical and Earthqauke Engineer with the Geotechnical & Tunneling Technical Excellence Center of WSP USA. His main areas of expertise include performance- and risk-based design, seismic hazard analysis. In his 8-year career as an engineer, he has worked on projects around the world, as part of design teams on aspects of geotechnical engineering, structural health monitoring, foundation design and earthquake assessments. Currently, he is working on infrastructure transportation and building projects in Canada, Latin America and throughout the United States.