Yannis S. Kostis is an administrative scientist, graduate of the National School for Public Administration.

He holds a BA from the Department of Political Science and Public Administration and a postgraduate degree in administrative science from the University of Athens.

He has been a staff member of the Greek Ombudsman since 2001 as a Senior Investigator.

His scientific interests are related to the organisation and efficiency of the Public Administration with an emphasis on social protection (Health, Social Security, Social Solidarity).

He speaks English.