The purpose of this master thesis was to research into the competences of a conference interpreter. In the context where a professional qualification becomes indispensable for starting a professional activity and the working conditions are changing, it seems appropriate to take a look at the activity of simultaneous interpreters for the benefit of their training. Of particular interest for this research is the context of working in international organizations. On the basis documentary research and explicitation interviews with the professionals, a competence framework was elaborated. A dynamic model of competence developed by J.-C. Coulet is proposed as a tool that can make the findings of the research practically usable in the training of interpreters.