Since 2015: Lead scientist, DESY, Hamburg, Germany
Since 2015: Professor for Theoretical Physics, Humboldt-Universität zu Berlin, Germany
2012–2014: ICREA Research Professor, IFAE, Universitat Autònoma de Barcelona, Spain
2006–2012: Staff scientist, CERN Physics Department Theory Unit, Geneva, Switzerland
2006: CERN fellow, CERN Physics Department Theory Unit, Geneva, Switzerland
2003–2004: Visiting Professor, Michigan Center for Theoretical Physical, University of Michigan, Ann Arbor, USA
2001–2011: Faculty member at Service de Physique Théorique, CEA–Saclay, France (on leave at CERN from January 2006 to October 2011)
1999–2001: Postdoctoral fellow, University of California, Berkeley, USA
1999: Doctorate in Theoretical Particle Physics, Université Paris XI Orsay, France, supervisor: Carlos A. Savoy
1995: Master in Theoretical Physics, Ecole Normale Supérieure, Lyon, France
1992–1994: Bachelor in Physics and Mathematics, Ecole Normale Supérieure, Lyon, France

2023–2024: CERN Scientific Associate
Since 2022: Physics, Experiment and Detector coordinator of the FCC feasibility studies
Since 2021: Member of the ECFA International Advisory Board for a Future Higgs factory
Since 2020: Head of the DESY theory group
2018–2022: Member of the scientific advisory board of “be.h” Excellence Science program, Belgium
2015–2021: Member of the scientific committee of the Galileli Galileo Institute for Theoretical Physics, Florence, Italy
2014–2020: Convener of the physics WG, Linear Collider Collaboration
2014–2020: Convener of the phenomenology WG, TLEP/FCC-ee steering committee
2014–2017: Member of steering committee, Higgs Cross Section WG
2011–2020: Editorial board, Scientific Reports published by Nature group
2010–2014: Member of the Commission Consultative de Spécialistes de l’Université Paris XI
2008–2012: Member of the International Detector Advisory Group in charge of giving advice on the validation process of Letters of Intent and dector R&D for the International Linear Collider
2007–2009: Member of the scientific advisory committee of the experimental particle physics department, Saclay, France
2004–2008: Elected member of the Scientific Research National Committee for Theoretical Physics (section 02) and for Astroparticle (CID 47)