It is with great enthusiasm that I am doing the Master II in Corporate Legal Engineering and Sustainable Development (Business Law) at the Faculty of Economic, Social and Legal Sciences (Campus de la Fonderie) at the Haute Alsace University in Mulhouse (France). In addition to the theoretical courses, this course includes an internship for the students to promote pre-professionalization. This internship at the Pierre ABADIE Firm (CPA) allowed me to get a more precise idea of the organisation and functioning of an accounting and legal consultancy firm, in particular thanks to the different tasks I was given.