Applied for an advertised internship position. After handing in my application I followed up several times and had phone calls with the HR team. The whole process seemed very unprofessional. HR Team told me that it isn't sure whether the team needs an intern and that a decision to hire an intern would be done in the upcoming weeks. After having another phone call after two weeks with the HR team and getting the same answer (not sure whether team needs an intern) I found out via homepage that they just accepted an intern. Very annoyed by such unprofessional communication.

Two rounds. The first round was a phone interview with HR (motivational). The second round was in person and held in the Zurich office by three Directors (general questions on background and technical questions with a quick case study).