We present recent surveys about alumni of transnational degrees. The surveys have been conducted within two French-German university structures, ISFATES-DFHI and UFA-DFH, that organise regularly surveys about the future of their alumni. We compare the results of Computer Science alumni with that for alumni of other fields, in particular Mechanical Engineering, and conclude that transnational diplomas are a clear added-value on the job market, especially for Computer Science alumni. Finally, we discuss about how to develop similar European programs at Bachelor and Master levels.