After a PhD at the University of Oxford and the Institute of Astrophysics in Paris, he has held teaching and research positions at the Fermi National Accelerator Laboratory, the University of Padova and the University of Zurich, before going back to Paris as a permanent CNRS researcher. He joined in 2011 the new center of excellence in Gravitation and Astroparticle Physics of the University of Amsterdam. He is the editor of the book Particle Dark Matter: Observations, Models and Searches, the editor-in-chief of the journal Physics of the Dark Universe and the author of Behind the Scenes of the Universe: From Higgs to Dark Matter.