John Antoniadis  obtained his BSc in Physics in 2009 from the University of Thessaloniki and his PhD from the University of Bonn in 2013. His thesis entitled “Multi-wavelength studies of pulsars and their companions” was recognized with the best thesis award of the Univ. of Bonn, as the best thesis in nuclear, atomic and gravitational physics by the German Physics Society, as well as by the Springer Thesis Award. He was a postdoc at the Max-Planck-Institute for Radioastronomy (MPIfR)  before moving to the Univ. of Toronto (Canada) as a Dunlup Fellow. He returned to Bonn as a postdoc at MPIfR  and then a Research Fellow of  MPIfR and the Argelander Institute. He joined the Institute  of Astrophysics – FORTH in 2021 as a tenure-track associate researcher in 2021, and he was promoted to Senior Researcher in 2025.