Kostas Parousis belongs to staff of ΑΕΚ FC Academy since summer 2019. He worked for many years for several football clubs in minor and major leagues. He has been fitness coach, assistant coach and performance analyst in AOK Kerkyra, AE Larissa, Panionios, Panachaiki, Ilisiakos, Acharnaikos, Apollon Smyrna, PAS Lamia, Olympiakos Nicosia, AEK Larnaka and FC Baku. He is UEFA A Licence holder.