He received his BA in Sociology from the Universidad Complutense and his Ph.D from UNED, university in which he has been working since 2004. Between 2012 and 2013 he was the Head of the Research Department of the Centro de Investigaciones Sociológicas (CIS: www.cis.es ). His researches have been published in reviews such as European Sociological Review, Demographic Research, International Journal of Comparative Sociology or Journal of Ethnic and Migration Studies.