Sfekas was born in the United States. After receiving his B.A. in Philosophy and English from the University of Maryland, he went on to earn both his M.A. and Ph.D. in Philosophy from New York University. His doctoral dissertation is titled The Problem of Individuation in Aristotelian Metaphysics. Sfekas has taught in various institutions of higher education including Brooklyn College of the City University of New York, The New York Institute of Technology, George Washington University in Washington D.C., and the American College of Southeastern Europe.
Sfekas has also published scholarly articles and books and has been a critic for the American Philosophical Association and several international journals. He has been the book critic for the international journal, Philosophical Inquiry. He has also been the educational advisor to the Fulbright Foundation in Greece.
As a public lecturer in the Athenian academic community, Sfekas has delivered over 150 public lectures since 1986 and frequently appeared on Greek television(6) as an academic spokesman. Apart from his scholarly publications, he has translated, between 1995 and the present, the scripts of seven historical films and 35 archaeological documentaries. He was also the philosophical consultant to the various productions.
Sfekas appeared in 12 televised episodes of the documentary From Aristotle to Hawking, a Pissanos Production, speaking on Aristotle and Ancient Greek Cosmology. The series that has been translated and distributed globally was nominated by members of the Academy of Athens for the 2008 Templeton Prize. Sfekas is the translator of the series from the Greek to the English language.