Short phone call to set up a meetin, 3 hours interview with the group manager. Questions mostly focused on technical knowledge, it was less personal. First part: answering questions about my studies, work experience and getting answers about the product and the working group. Second part: Basic C knowledge, sorting algorithms.

first interview simple questions in c a very nice interviewer who gave a good feeling also when I didn't know. Second interview higher level questions. Third interview with the team manger and forth with the HR