Mr. Terceiro is a professor of Applied Economics at Complutense University (Madrid, Spain). Mr.Terceiro is Chairman of the Board of Advisers of Abengoa, S.A. and Bioetonal Galicia, S.A. and is a board member of the Prisa Group, Abengoa, Union Fenosa, Iberia Airlines of Spain and Aberdeen International Fund. He held several Spanish government offices, including Undersecretary of the Cabinet Office, General Director for Libraries and Books, the National Education Advisor and Vice-President of the Center for Constitutional Studies. He is a member of the Economic and Social Council of Spain. In addition, Mr. Terceiro has also been a professor at other Universities in Spain and abroad, including Complutense University (Madrid, Spain) and the Universidad de La Havana, and developed the program of the North-American Universities for the University of Madrid.

From 1983 until 1999, Mr.Terceiro was the advisor of the Academic Board of the Royal College Complutense at Harvard.