Priftis has also worked as an assistant coach of the senior men's Greek national basketball team between 2008 and 2012, and from 2014 to the present. He has worked as an assistant coach with Greece at the following tournaments: the 2008 FIBA World Olympic Qualifying Tournament, the 2008 Summer Olympics, the EuroBasket 2009, the 2010 FIBA World Championship, the EuroBasket 2011, the 2012 FIBA World Olympic Qualifying Tournament, the 2014 FIBA Basketball World Cup, the EuroBasket 2015, and the 2016 Turin FIBA World Olympic Qualifying Tournament.