| 1991-1995 | Research Assistant, Chair of Economic Policy, University of Cologne |
| 1995-2001 | Senior Research Assistant, Chair of Public Economics, University of Munich |
| 2001 | Habilitation, Venia Legendi for Economics, University of Munich |
| 2001-2008 | Professor, Chair of Public Economics, University of Cologne |
| 2008-2013 | Professor of Business Taxation and Research Director, Centre for Business Taxation, Saïd Business School, University of Oxford |
| 2013-2016 | President and Chief Executive Officer, ZEW - Centre for European Economic Research, Mannheim; Professor of Economics, University of Mannheim |
| since 2016 | President, Ifo Institute - Leibniz Institute for Economic Research; Director, CES - Center for Economic Studies and Professor of Economics, Chair for Economics and Public Finance, Faculty of Economics, University of Munich; President, CESifo GmbH |
| 1979-1981 | BA Mathematical Economics, School of Mathematical Studies, University of Essex |
| 1981-1982 | MSc Mathematical Statistics, Department of Mathematical Statistics, University of Birmingham |
| 1982-1987 | Ph.D. Economics, Department of Economics, University of Essex |
| 1983-1985 | Teaching and Research Assistant, Department of Economics, University of Essex |
| 1985-1986 | Senior Research Associate and University Lecturer, Economics Research Centre, School of Economic and Social Studies, University of East Anglia, Norwich |
| 1986-1988 | Lecturer (tenured), School of Economic and Social Studies, University of East Anglia, Norwich |
| Fellow and University Lecturer, Department of Applied Economics, Trinity College, University of Cambridge |
| 1988-1990 | Lecturer in Economics, Department of Economics, University of Sydney |
| 1990-2002 | Senior Lecturer in Economics (tenured), Department of Economics, University of Sydney |
| 1995-1996 | Senior Lecturer, Department of Political Economy, University of Glasgow |
| since 1996 | Hoover Fellow in Economic and Social Ethics, Universite Catholique de Louvain, Louvain-la-Neuve |
| 2000-2006 | Associate Professor of Economic Theory, Faculty of Economic Sciences, University of Athens |
| since 2006 | Professor of Economic Theory, Department of Political Economy, Faculty of Economic Sciences, University of Athens |
| 2012 | Chief Economist, Valve Software, Seattle |
| 2013-2015 | Visiting Professor, Lyndon B. Johnson School of Public Affairs, University of Texas |
| 2015 | Member of Hellenic Parliament, Athens |
| Minister of Finance, Athens |
| 2016 | Honorary Professor, Department of Political Economy, University of Sydney |
| Professor Honoris Causa, International University College of Turin |
| Honorary Doctor of Philosophy, University of Sussex |
| 1994-2005 | Different jobs, from doctor´s to tax consultant office, from parliament to marketing company |
| 2000-2005 | Economics, Vienna University of Economics and Business |
| since 2005 | Journalist; Editor; Reporter, Radio Österreich 1, ORF Austrian Broadcasting Corporation, Vienna |
| since 2010 | Journalist; Editor; Reporter, Zeit-im-Bild, ORF Austrian Broadcasting Corporation, Vienna |
| since 2016 | Host ZiB, ORF Austrian Broadcasting Corporation, Vienna |
