I discovered IRT SystemX during my PhD years. The institute was then a partner of the laboratory in which I was doing my thesis, but I was not necessarily familiar with how it worked. I decided to join it in 2017 as an engineer-researcher in order to continue my work in the field of ener-gy network optimisation within a project that brings together large groups, SMEs and high-level academic players. The projects in which I subsequently participated in and in which I am still involved do not fail to arouse my interest. I am delighted with my experience here. The IRT has given me the opportunity to evolve professionally from a research engineer to the position of Head of the “Scientific Computing and Optimisation” team, and to collaborate alongside research-engineers working on cutting-edge subjects with strong industrial and scientific potential.