Dissapointing and non-transparent process. They called me to a virtual interview, which they did. Then minutes before the interview, I got an email to cancel. They said they would reschedule then never did.

It is a loop interview spanning several days. You can negotiate with the recruiter to adjust the 4-round interviews. They are hiring manager round, BQ round, coding round and deep dive technical interview. Coding round is more practical and research-based, instead of leetcode. Deep dive will cover basics of ML and deep learning, and a bit of LLM if related.