Postdoc and PhD fellowships will be allocated in a staged way, in order to best cover the 5-year timespan of the project, on the basis of the needs of the three scientific work packages and by focusing on specific, essential deliverables. \\ The management board issues regular calls for projects, then makes a selection. Then, a strict quality process is used in the recruitment of PhD students and postdocs. It relies on experienced researchers as members of the selection committees. It ensures scientific excellence and internationalization.\\ In **2020**, **the selected 3-year PhD position** is: * Identification of photons for multi-messenger astrophysics purpose with the upgraded Pierre Auger Observatory (WP2, Corinne Bérat, LPSC). Laureate: Zoé Torrès \\[[Image(7-graduation-hats.png​,right,width=250,marge-right=20,marge-top=20)]] and **the selected 2-year post-doctoral positions** are: * Effective Field Theories for Higgs and SM Physics (WP1, Nicolas Berger, LAPP). Laureate: Eleonora Rossi * Etude des amas de galaxies avec LSST (WP3, Céline Combet, LPSC). Laureate: Calum Murray * Cluster cosmology with the NIKA2 camera (WP3, Frédéric Mayet, LPSC). Laureate: Emmanuel Artis * Study of GRBs with H.E.S.S. & CTA and alert follow-up optimization with Virgo/LIGO (WP2, David Sanchez, LAPP). Laureate: Feraol Dirirsa * Gravitational probes of dark matter (WP3, Pasquale Serpico, LAPTh). Laureate: Aniket Joglekar \\ {{{#!html You can retrieve all post-doc positions & fixed-term contracts available at