Ruben is an expert in machine learning and robotics with more than 10 years of experience in Bayesian optimization. He is the original author of BayesOpt, a popular open-source Bayesian optimization package. He has published several papers in that topic in top journals and conferences while developing software that is being used both in academia and industry. He is a professor of Computer Science at the University Center for Defense in Spain. Previously he was a research assistant at the Instituto Superior Tecnico in Lisbon and the University of British Columbia. Ruben holds a Ph.D. in Computer Science and an MS in Electrical and Mechanical Engineering from the University of Zaragoza.