2013              University of Mannheim (visiting), University of Oradea (assoc.prof.)

2012             University of Oradea (assoc.prof.),  University of Bern, World Trade Institute

2011              University of Mannheim

2010              Visiting professor, University of Rome 'Tor Vergata'

2009 - 2010   Visiting professor (W3) for Public Finance, University of Hamburg

2009              Research associate, University of Hohenheim

2008 - 2009   OECD, Social Policy Division

2008              Post-Doc Researcher, TWI, University of Konstanz

2007 - 2008   Post-Doc Researcher Stockholm School of Economics

2006 - 2007   Post-Doc fellowship by the SNSF, visiting positions at LSE and the University of Stanford

2005 - 2008   Research affiliate at the FAA, University of St. Gallen

2002 - 2005   Doctoral student and research associate at the SIAW, University of St. Gallen