Rivian interview questions

One initial introducing call, followed by one technical phone screen. (Hiring manager reached out to me instead of HR, probably because of their hiring surge and they are definitely hiring a lot.) Then a VO with 4 rounds total, across 2 days. Coding question are just general data structure and Algo concept. System design and technical depth are separated into 2 rounds. Overall was not a hard interview. Keep in mind that pre-ipo companies like Rivian are more generous in RSU instead of base, and overall the TC is not competitive. Anyway I went with another company at the end and didn't bother countering back with Rivian.

One phone screen with hiring manager, 3 coding interviews! YES, THREE! I even had to do one in C++ after I specifically told them I've been working exclusively in C++ for the past three years. The interviews were purely coding and I got the answers to all of them, yet mysteriously I was rejected. Of course, they "don't share specific feedback". If the company works internally anything like I've seen of it in the interview process, I have dodged a bullet. I get the feeling this company is trying to make it seem like they're onto something big but they're probably nothing more special than the next person.