Perguntas de entrevista de vagas de Process Development Engineer da empresa Merck

The interview was held in german only even though the job requires both german and english. Even though it was obvious that I was struggling because of the language I was treated as if I am stupid. At the end I brought it that english would have been better. The interviewer told me he knows but german is very important and that I need to understand dialects also. I can not help but see this is racist and not professional. A few weeks later I sent an email asking for feedack and I was ghosted!!