From 1997 to 1999 he was an Assistant Professor of Electromagnetic Fields at the Department of Biophysical and Electronic Engineering (University of Genoa) teaching the university course of Electromagnetic Fields 1.
From 2001 to 2004, he was an Associate Professor at the University of Trento. Since 2005, he has been a Full Professor of Electromagnetic Fields at the University of Trento, where he currently teaches electromagnetic fields, inverse scattering techniques, antennas and wireless communications, and optimization techniques. At present, Prof. Massa is the director of the ELEDIA Research Center at the University of Trento and Deputy Dean of the Faculty of Engineering. Moreover, he is Adjunct Professor at Penn State University (USA), and Visiting Professor at the Missouri University of Science and Technology (USA), at the Nagasaki University (Japan) and at the University of Paris Sud (France).
He is a member of the IEEE Society, of the PIERS Technical Committee, of the Inter-University Research Center for Interactions Between Electromagnetic Fields and Biological Systems (ICEmB) and Italian representative in the general assembly of the European Microwave Association (EuMA). His research work since 1992 has been principally on electromagnetic direct and inverse scattering, microwave imaging, optimization techniques, wave propagation in presence of nonlinear media, wireless communications and applications of electromagnetic fields to telecommunications, medicine and biology.
Prof. Massa serves as an Associate Editor of the IEEE Transactions on Antennas and Propagation.