General (ret.) of the Ecuadorian Army. He has a doctorate in Educational Sciences and a degree in Administration and Military Sciences. He has twice been Minister of Defense of Ecuador, Undersecretary of Defense, Secretary of the National Security Council, Head of the Joint Command of the Armed Forces, Director of Army Operations in the Cenepa War, Director of the Army War Academy, director of the Eloy Alfaro Military Superior School, military attaché of Ecuador in the Republic of Argentina, and founding dean of the Faculty of Military Sciences of the Army Polytechnic School. Additionally, he has been a professor at the William J. Perry Center for Hemispheric Defense Studies, the San Francisco de Quito University, the International University of Ecuador, the National Polytechnic School, the Joint Staff Course of the Armed Forces, and the Course on General Staff of the National Police. General Jarrín has training in Continental Defense from the Inter-American Defense College and a postgraduate degree in Strategic Intelligence from the Superior War College of the Argentine Army. Likewise, he has taken courses in Defense Management in England, Counterterrorism at the Herizelya University in Israel, and Curriculum Design for Defense in the United States.