Had two phone interviews with people in different functions from the position I was interviewing for. Both interviews were scheduled within 2 weeks of initially being asked to interview. Both interviewers were pretty casual but not particularly warm or energetic. Interview was pretty much 50% business case and 50% bahavioral questions. Interviewers spent time discussing the type of person that does well in the Amazon culture: self-starter, able to work in an unstructured environment, willing to take initiative even if it is not part of your job. Since all training is on the job, you have to be able to boot strap yourself pretty quickly.