The interview started with a phone screening with a recruiter and then a 30 minute interview with the CTO which was very conversational and low-stress & mostly covered work history and discussing the role/company. Then I was given a take-home coding challenge which was one of the most difficult/involved I have ever been given for a job interview - it involved creating a responsive UI from nothing that matched design screenshots for desktop/mobile and retrieved data from a provided API, but this was the hardest part of the interview process and the only real coding challenge so I found it reasonable. I submitted this on a weekend & it was graded promptly and I had feedback by Monday and a 3-hour virtual onsite scheduled the same week. During the 3-hour onsite, I spoke with 4 groups of people (a total of 8 people) in 45 minute intervals. I liked every single person I spoke with! Everybody was friendly and clearly not trying to intimidate me or catch me with any gotchas. The four parts of the virtual offsite were speaking with a product/design group, a design prompt with engineers, a behavioral/cultural type of interview the director of engineering, and then reviewing the coding challenge/completing a pair programming add-on to the challenge with another group of engineers. Despite being intimidating based sheerly off of the length of the interview, this was a very good experience because of how friendly & communicative everybody in the process was. I had feedback given to me the same day & was extended/accepted an offer the next day.