After my PhD thesis in 2011 on instabilities in cold plasmas, and several experiences in computer development in an HPC environment, I joined the CEA as a scientist in 2017. Currently, my research concerns the modeling and simulation of equatorial ionospheric phenomena. Thanks to the CLOVIS code, which solves the equations of magnetohydrodynamics and for which we are actively developing, we can describe, among other things, fluid instabilities such as that of Rayleigh-Taylor which appear and destabilize the ionosphere. It is on this theme that I supervise university interns and students preparing a doctoral thesis.