I just had an entire job interview in German

This is a huge accomplishment for me. I expected the interview to be in English, and then suddenly the interviewer said we will be switching to German now and started talking away in German. I'm not somebody who performs well on the spot, so the fact that I was successfully able to switch to German and conduct the whole interview in German says a lot.

The interviewer addressed me as "du" rather than "Sie", which I didn't like, and in hindsight, I made a few grammar mistakes. But, I think it went very well!