The first round in a behavior assessment via Skype. You'll mainly go through your resume and academic experiences, what you're seeking for in a job, and ask the interviewer about their experiences. It's friendly and very casual. The second round is on-site, they'll fly you there if you live far away. Two associates will guide you through the day and take you to lunch in between rounds. You'll have 3 behavior interviews with Upper management where they'll ask both soft and hard ball questions, no technical skills assessed though. The technical portion comes in a 45 minute case study that requires a ittle analytical thinking and easy arithmetic. Nothing you need to prepare for (don't pick up case in point- it's not like that), and you'll get through it fine. Explain your thinking. They'll get back to you with their answer in 2-3 weeks.