In this master thesis work is presented my experience in a French consultant company during a six-month internship. The goal of the internship was to develop a web application in an Agile team. The main functionality of the application is the management of clients and consultants of the company. The agile team was composed by six interns developers at their first working experience. The thesis work extends the internship report committed at the end of the stage, where there are illustrated the main steps of the development. Particularly, are added the chapter 4, describing an activity research made in parallel during the stage, and the sections where are described tools used for the deployment (kubernetes, terraform and helm).