I applied through the University of Waterloo job search program WaterlooWorks - like any other interview through WaterlooWorks, your're selected for an interview and you go in to do the interview at Tatham center at your selected time.

Casual interview focused mostly on personality and hobbies. Personality is most important, they want people they will enjoy working with. Be yourself and tell them about yourself. If you get along with people it will be fine.