I applied in-person. The process took 1 day. I interviewed at Ansys in Feb 2012
Interview
The interview was with 12 people and lasted for a total of 4 hours. Some interviews were 1 on 1, others were with 2 or 3 people. 2 of the 12 were phone interviews, calling out to a different branch of the company. The rest were in person. Some people wanted me to answer technical questions about day to day details of the job, others wanted me to describe why I wanted the job. Overall it was a pretty standard interview.
Interview questions [1]
Question 1
You have 3 bags - 1 with red socks, one with black socks, and one of mixed red and black socks. There are labels on the bags and you know for sure that each bag is mislabeled. You are allowed to reach in and pick out an item from a bag one at a time to help determine what is in them. How many total picks would it take to decide the correct labeling.