The interview process involved walkthrough of resume, introduction, some of the DOE questions, statistical analysis related question and some of the lean IE questions. The process was overall smooth and they sent offer letter a month after interview

I applied in January during the career fair. They emailed me 5 months later in May for a phone interview. 2 weeks later, I was invited to go to a site interview. The site interview consisted on several panel interview and some 1:1 interviews.