Born in Sao Paulo (Brazil), he grew up in Palencia (Spain) and studied a Licenciatura in Filosofía y Letras at Universidad de Valladolid (Spain). He completed graduate school in the US, obtaining an MA in TESOL-Spanish at West Virginia University and a Ph.D. in Applied Linguistics, Spanish, and Sociocultural Theory in 2003 from the Pennsylvania State University. He was director of the Spanish Language program at the University of Massachusetts Amherst for 3 years, and director of the Spanish Language Program at the University of Miami for 10 years. He is currently the academic and research director of ILCE at Universidad de Navarra (www.unav.edu/ilce) and director of the MA program in Spanish L2 Teaching (www.unav.edu/mele). His research focuses on Second Language Teaching and Learning from a Sociocultural Psychology perspective. He centers on participatory action research methodologies for SLA; concepts as transformative tools for thinking and communicating; creativity and development; identity and storytelling in L2 learning and L2 teacher professional development and training. As an invited professor, he has taught graduate seminars at Universidade de São Paulo (Brazil), Pompeu Fabra (Spain), Aarhus University (Denmark), Middlebury College (USA), St. Michael's College (USA), Rutgers University Camden (USA), and Instituto Cervantes (Spain).