I was contacted by HR, and after a brief phone conversation/screening was invited to a formal interview. Three interviewers were present (HR, Business analyst, and a technical lead). It was of standard length, approximately 30 minutes. I was called by HR the same day (later that afternoon) and offered the position. It was interesting to note that they did not ask for references. I suspect they would for lead, sales, and management roles, though. Due to the nature of the role, I also had to provide a driving abstract and undergo a basic police background check after I accepted the job offer.