[1] He has worked as a professor at the Chapingo Autonomous University, the College of Postgraduates (COLPOS), and the Center for Research and Advanced Studies of the National Polytechnic Institute of Mexico (CINVESTAV), where he served as director of the Irapuato Unit.
He has taught specialized courses in Argentina, Austria, Colombia, Costa Rica, Chile, Ecuador, Jordan, Iran, Venezuela, and other countries.
[1] Villalobos has been a consultant for the Consultative Group for International Agricultural Research (CGIAR), a member of the National Council of Science and Technology (CONACYT) of Mexico, and a member of the Institute of the University of California for Mexico and the United States (UCMexus).
In 1998, he was appointed the first Executive Secretary of the Intersecretarial Commission on Biosafety of Genetically Modified Organisms (CIBIOGEM).
[1] From 2010 to 2018, Villalobos was Director General of the Inter-American Institute for Cooperation on Agriculture (IICA) (in English) in Costa Rica.