Frija is agricultural economist with ICARDA’s Social, Economic and Policy Research program. His current research interests focus on farm modeling, farm efficiency and productivity analysis, agricultural water management instruments, institutional performance analysis, and economics of conservation agriculture.
Previously, he was post-doctoral researcher at Ghent University in Belgium, specializing agricultural water policy analysis in developing countries. He was also assistant professor and researcher at the College of Agriculture of Mograne, Carthage University in Tunisia.
Frija is the author of more than 50 publications. He is an active member of several scientific and professional associations, such as the African Association of Agricultural Economists and the Tunisian Association of Water and Environment.
He holds a Ph.D. in agricultural economics from Ghent University in Belgium.