 Sojo graduated from the Monterrey Institute of Technology and Higher Studies (ITESM) with a bachelor's degree in Economics and received both a master's degree in Economics and a doctorate in Industrial Organization and Finance from the University of Pennsylvania, where he published several papers on econometrics and time-series with Lawrence Klein, the 1980 laureate of the Nobel Memorial Prize in Economic Sciences.Sojo has worked as a full-time professor at the ITESM Campus León, at the National Institute of Geography, Statistics and Informatics (INEGI) and served as the economic policy coordinator of Vicente Fox while he was serving as governor of Guanajuato.When Vicente Fox was sworn as president on December 1, 2000, Sojo was appointed his Chief Economic Advisor until his resignation in 2006, when he joined Felipe Calderon's transition team.