I was given a coding challenge, which was quite tedious, but manageable. Then, I was scheduled for a first round phone interview, which I passed with very positive feedback. Then, I had another phone interview. I solved the problems fairly quickly and received positive feedback from the interviewer. Almost a month later they sent me a rejection email. It seems that they're only looking for certain "types" of candidates, and unless you fit that mold, you're most likely not going to get the job. Spend your time on the coding challenge + two phone interviews elsewhere, it's not worth it. This company just wastes people's time.

First, you do a 90 minute coding challenge representative of the work one would do at Pinterest. Use of APIs, SQL, etc. Then, there are two phone screens, each with an initial problem that gets harder as you solve (eg, more parameters). Make sure you understand the desired output because that was ultimately what didn't get me the job.