I had a phone interview, and am now going to Cambridge for an in person interview at the end of the week. The phone interview consisted mostly of me learning about the different projects Wolfram Research has. The interviewer was a director, and responsible for many people. I think she was trying to get a feel for where I might best fit in with the company. Said that most people come in from internships so they already know the company pretty well, but I could possibly work at the Cambridge office where there are more new, younger employees who don't have previous experience in the company.