There were 4 stages of the interview, each with a different interviewer. First was a simple conversation about my experience where the interviewer then asked me to describe a product idea and explain why I would be a good fit for the company. Second was a math brain teaser. Third was another brain teaser, but this one geometrical rather than numeric. Last was the coding questions where I was asked to write the beginning of a Line class, then solve a problem printing nodes in order.