I had a total of 5 interviews which started with a recruiter, then Director of Engineering and he was quite pleasant and easy to talk to. I the had 2x cultural interviews with two different people and that allowed me to ask a lot of questions about environment. I finished meeting the CTO who asked me some interesting questions in particular what i was really passionate about and when I told her we both nerded out a bit about possibilities which was really interesting. I really enjoyed my chat with her and I wouldn't think twice before working there. I'm not sure if I got the job or not but nevertheless, I had a very very positive experience.
Update:
Although I never got the job they told me they would make their decision and 2 weeks have gone by and they never let me know even though I did reach out to them. Seemed like they were stringing me along waiting for their first choice candidate to check out. I followed up one more time and again they were trying to keep me warm. I ended up accepting another offer. It would've been nice for them to be upfront and just tell you they had another candidate.