I submitted my resume to a contact there on a Wednesday. He called that evening, and on Friday I was brought on site for an interview. The interview was 4 hours with a half dozen people or so, including the department manager. The questions were more about what I wanted to do with my career than anything technical. The one problem though was that with the exception of my contact the rest of the managers I interviewed with were not very honest about the kind of work I should expect to be doing. They made it seem like it would be a lot more math/physics related than it ended up being.