Very thorough, but mutually rewarding. Went into it thinking there was some great insight to gain on the industry whether I was offered the position or not. 3-4 interviews with a Regional Director and RVP followed by "The Challenge." A presentation and role play on accounts and key targets at those accounts. You'll be explaining the rationale behind why you chose those accounts. Being completely transparent, it can be tedious but for good reason. It gives you direct insight into what the role is like and helped me feel highly confident I was a good fit for MongoDB and vice versa. This is a company worth the effort from everything I've seen/experienced thus far.