Ferdinand Santos was Rector-President of St. John Vianney College Seminary in Miami, FL. He was also Associate Professor of Philosophy and Director of the Pre-Theology Program at St. John Vianney and taught Philosophy and Theology, in the Permanent Diaconate Program at St. Vincent de Paul Regional Seminary in Boynton Beach, FL. He was also, at one point, Spiritual Director at Our Lady of Providence Seminary in Providence, RI, and taught Philosophy and Theology at Providence College. He was previously Director of the College Department of San Carlos Major Seminary in Makati, Philippines and Director of the Archbishop Gabriel Reyes Memorial Library. He taught Philosophy at the Immaculate Conception Major Seminary in Bulacan, the Ateneo de Manila University, and De La Salle University while also serving as Catholic Chaplain at the University of the Philippines. He currently serves the Diocese of Antipolo in the Philippines.