This internship consists of identifying the needs of users (around 300 people), understanding the principles of the old portal to make the new platform intuitive and efficient, configuring Jalios on a few key themes in order to test the possibilities offered, preparing future ones. Jalios space administrators to create and update their own content, study the technical limits of the system and write the manual for key users. The internship will result in a 100% functional model Desired skills / to be acquired: web development, CMS, Ergonomics and HMI, This internship takes place within the Mégajoule laser operational management unit, in direct contact with the teams at the central level of the laser installation operating department and the teams in charge of software tools.