I applied online. The process took three weeks.

Generally, it was a very slow process, much slower than all the other startups I have talked to. The recruiter seemed very disengaged. A simple email would take a few days to get a response. The interview seemed fairly easy, with some API design and some SQL queries. The response from the interviewers was fairly positive, but I got a rejection nevertheless. It sounds like they just brought too many candidates into the pipeline and were waiting for a candidate to accept the offer while stalling all others. If you want some practice of simple SQL knowledge for an interview, this can be a good opportunity. I was not at all excited to work at Whoop given the reviews anyway.