First, the interviewer forgot the day that he had an interview with me. And than, he was not prepared during the interview. He forgot how to solve the problem, and when I googled it he remembered. Even though he knew that I was a junior developer, he said they want more mid level engineer. Awkward!

Downvoted because there was no chance to prove myself. There are a minimum of 3 interviews plus a conversation with the CEO if you make it passed all of them. Both conversations I had were pleasant, so I thought. In hindsight, what I had interpreted as a "chill" attitude from my second interviewer I believe now was that he had already made up his mind. No matter what I said, after I said it there was a pause, and he would try to relate to what I said instead of keeping any kind of pace in the conversation.