One of the smoothest interview processes I went through. I had a busy semester so I wasn't able to do the coding challenge immediately – wasn't a problem for them, since they were flexible to move at a pace I felt comfortable at. Recruiters were very friendly, responsive, and transparent. Another phone interview, where I didn't perfectly answer the design question but the interviewer helped walk me through improvements, which I greatly appreciated. Final round had 2 phone interviews plus another coding challenge. I was able to use what I learned in the first interview and apply it to my work for the final round design questions, which was pretty neat.