It is a group interview face by face in their office located in Waterloo, which is very close to Waterloo university. It is just a walking distance. About the interview, First, a hr will introduce their company about 5 minutes or more. and then some guys ,maybe two guys, asked some technical questions. some questions are needed to be written in white board. Actually they asked how to solve a problem and then they want you explain it and let you write a better way if your answer is not satisfied them.