Phone call 1 week after sending the application. A very kind person talked with me about 10 minutes about the company itself and about me personally. Then they invited me. I went there. The boss served me a coffee for free to welcome me in his office. He asked me some simple questions. Although I was kind of nervous it was a funny interview. I think both of us enjoyesd it. All I can tell You is: Just be yourself. Do not think about everything for the whole time. Done