After graduating from Ecole Normale Supérieure de Lyon in 2008, Sébastien Corde joined the Laboratoire d'Optique Appliquée at Ecole Polytechnique to work as a graduate student on the development of laser-plasma accelerators and their applications to femtosecond light sources. Within a few years he became an expert in his field, publishing an in-depth review article in Reviews of Modern Physics covering the research area of femtosecond x-ray sources from laser-plasma accelerators. Through a series of groundbreaking experiments, he pushed forward the understanding of the interaction underlying laser-plasma accelerators, demonstrated an innovative all-optical Compton gamma-ray source, and showed the potential of these novel light sources for applications, such as phase contrast imaging. Sébastien received his PhD in 2012 and was awarded the Outstanding Doctoral Thesis Research in Beam Physics Award from the American Physical Society, the "Prix René Pellat" from the French Physical Society, the John Dawson Thesis prize from the Laser and Plasma Accelerators Workshop, and the "Prix de thèse de l’Ecole Polytechnique" from his graduate school, Ecole Polytechnique. He continued his career as a Research Associate in the plasma wakefield acceleration group at SLAC. The experiments that he conducted at FACET have led to fast experimental progress in the field of plasma wakefield acceleration, from the understanding and observation of self-focusing in beam-ionized noble gases to the demonstration of ultrahigh-field, low-energy spread acceleration of positrons in a plasma. Subtle physical effects, such as dark current induced by multiple ionization, and major milestones, such as the demonstration of the high-efficiency acceleration of an electron beam, were reported in high impact publications. In 2015, Sébastien has been appointed as an Assistant Professor at Ecole Polytechnique, a top French engineering school. His research is at the interface between beam-driven and laser-driven plasma accelerators.