After an initial screening with the recruiter, I was moved on to an interview with the hiring manager (another machine learning engineer). I was told this was not a technical interview, but it was 100% technical and included a live coding problem (LC medium). The interview lasted one hour and the interviewer wasn't very open to communication particularly on the live coding. In the end, I found an optimal O(n) solution that passed all test cases and tried to always think out loud. On the next day I received a rejection email with a no-feedback disclaimer, but the interviewer told me the next steps would be the on-site interviews (4, if I recall correctly).

On September 11th, the recruiter scheduled me an interview on September 14th at 12:00, but at that day I didn't get any call until 18:00 another recruiter sent me an e-mail to reschedule an interview on September 20th at 16:00. Again, I didn't get any call from Etsy on September 20th. It seems like this company doesn't value engineers. BTW, the recruiter is weird, during the time when the second recruiter sent me an e-mail to reschedule the interview, he asked me when I am available during the weekday. I told them that I am available on Monday and Friday around 14:00 in that week. At the end, the recruiter just scheduled me an interview on Thursday at 16:00.