Communication throughout was flaky and often missed their promised timelines. Process dragged on for 2+ months, consisting of: phone screen, sales+basic coding challenge (pitch deck and Python data science notebook), technical interview round, final behavioral interview round. After final round, received automated boilerplate rejection email with no feedback.

This is something you should deduce from the job description and also what the company's been up to on their website, but you're expected to be more a consultant than a "sit behind a computer" data scientist. Nothing wrong with either, but it seems Citrine is interested in the former. This was reflected in the questions in the initial phone screen, which seemed oddly... strict and routine, asking for DS concepts and your experiences with clients (I felt uncomfortable with how the interviewer pressed for certain aspects of my experience with clients). I had no time to ask what the company's like afterwards since they seem to cram their list of questions into the 30 minutes allotted, but perhaps that line of questioning was the exposure I needed (didn't advance, btw).

The 30 min phone screen had 3 technical questions about neural nets and cross validation, and a couple of personality fit questions. Then came a technical project challenge that takes a week to complete. Did not progress beyond here.