Dr. Gemtos is Emeritus Professor of the University of Thessaly. He is a graduate of the Department of Agriculture, Aristotle University of Thessaloniki, and holds PhD in Farm Mechanization from the University of Reading UK.

He is member at Geotechnical Chamber of Greece, the Hellenic Society of Agricultural Engineers, the European Society of Agricultural Engineers, the American  Society of Agricultural Engineers, the  Canadian Society of Agricultural Engineers, and the Greek and European Conservation Agriculture societies.

His teaching experience focuses on farm mechanization, energy in Agriculture and precision agriculture.

He has participated in more than 27 researches, has supervised 8 PhD theses, has published more than 60 papers in peer reviewed journals and 200 papers in national and international conferences. He has additionally organized 2 international and several national conferences.