Yannis was born in Athens. He has studied history, international relations, journalism and European studies.
Yannis has worked in the advertising industry, has expertise on political communication and has been Communications Director of the Ministry of Education and Chief of staff of a Greek MP.
He has been Director of the think tank DIKTIO since 2013 until 2018.
From July 2018, he is the Director of the Institute for Democracy Kon. Karamanlis.
As part of his duties, he has written several studies on issues such as the Refugee crisis, the Demographic problem of Greece, the evolution of the EMU, the flat tax rate system and two books on the 4th Industrial Revolution.
Also, he has attended the German Marshall Fund Memorial Fellowship