Is preference given to candidates who have already done an internship or a diploma thesis with BASF?
That depends. What counts is extensive competence in your subject, and your personality – in the form of entrepreneurial spirit, flexibility and social skills. Of course, an internship or a diploma thesis gives you the opportunity to make useful connections within BASF. That can prove beneficial for later applications or can even lead to an offer of employment. Once your name and your abilities are known, they will be recommended to others. A good reference from BASF can open many doors – both at BASF and elsewhere.