I got contacted for an interview through a hackathon that I went to. It was not too bad overall, the technical questions were a bit tricky. The first step was a phone screen with one technical question and some behavioral, the technical problem was not too difficult. Even though I didn't do perfectly and I didn't think my interviewer liked me that much, I moved on to the next round. The second and final round consisted of three technical problems. Two problems I went through with a group of three engineers and the last problem I did with one separate engineer. I got stuck on one that had to do with trees, but the other two I did ok.