He started his scientific career as a contract (junior) researcher in 2001 at the National Centre for Social Research in Athens-Greece. He subsequently carried out his PhD project with title 'Wage Mobility Patterns in Europe' from 2003 until 2007 at Tilburg University in the Netherlands. After completing his PhD, he was employed at the research institute CEPS/INSTEAD (currently LISER) in Luxembourg where he worked as a postdoc for the International Master in Social Policy Analysis that was given by CEPS/INSTEAD and the University of Leuven (KULeuven). Since 2009, he is working at the VU, first at the department of Methods and Statistics and then for the department of Sociology.