Highly professional, highly confidential. They definitely replied very quick for being such a company, and for German standards where you might get a negative answer from an online application 5 months after. The final interview was on September (sent my CV on July) and the feeling is that they carefully planned it as they know everyone came from far away, which denotes they are careful with their employees. The whole interview was also very respectful and caring and I believe the HR Department had performed quite fast a really good candidate screening. The department manager was a very serious, deep nice person who just found out that maybe my German back then was not good enough but still sat with me and asked me questions that I felt he really wanted to hear the answers from. Overall one of the few really professional HR experiences in the last 8 years.