Etienne Malaboeuf received his master's degree in software engineering from Nantes University in 2022. He focuses on improving the performance of projects related to real-time and high-performance computing, while providing various forms of support to researchers using French and European supercomputers. He is presently an HPC research engineer at CINES, a French national computing site, where he bootstrapped the porting C++ Particle In Cell (PIC) code Smilei used internationally for wide range of plasma physic simulations toward Nvidia and AMD GPUs using mostly OpenMP offloading. He went on working on the Fortran version of GYSELA, a simulation code for plasma turbulence of which he extracted key components to rewrite them using Kokkos with performance, portability and reusability in mind. At CINES, he also worked on testing for regression of the machine's environment while benchmarking HPC software and providing ready to use Spack configuration for CINES' users. He recently started a PhD with the GYSELA team to look for fundamental bottlenecks related to the GYSELA algorithms at exascale.