Rivian recruiting seems to be a mess - my interview process dragged out over 3 weeks due to the latency of the recruiter.
Overall the process is a bit much: a 30 minute presentation and 4 45-minute interviews with the rest of the panel. None of the panel interviews were particularly hard-hitting, it was mostly a vibe check with some very broad surface-level questions that were difficult to give a good answer for.
One guy had me do some systems thought process questions about vehicle dynamics.