Showed up to the office. Things seemed kind of hectic. Room wasn't available. First panel asked me a pretty arbitrary coding question and didn't allow me to pick the language. I got through the question and there was actually an error in the question so the interviewer thought I had implemented it incorrectly. I had to explain to them that what he is saying contradicts with one of the requirements in the question prompt... So clearly they had not looked at the question. Second panel was the front end guys. They just asked my opinion on different frameworks. Asked how I would implement a feature. Third panel was strange. They never introduced themselves just showed up and asked to do threat modeling for my last employer. They didn't seem to want to converse or be part of the interview. Really strange I got no feedback from the interviewers and they actually never even reached out to me to let me know if I was rejected. I feel like it is common courtesy to follow up but these guys didn't care about that.

four round interview，all technical. Focused on data structure and algorithm problem like dfs, greedy. Sometimes small design problem like tic tac toe pops up so better be prepared. Go is preferred here and you will be asked to write functions in Go by googling. Peoples are nice there, casual, helpful.