Someone from HR will call you who knows nothing about tech, just to see if you'd come in for an interview. Then when you come in a manager will interview you for perhaps 30 minutes. If you have been studying computer science, it will be extremely easy. I can't remember if they just hire you right then, or if they call you later. This is for the little code testing jobs they have all the time, by the way. They typically last about 3 months, and then they may ask you to go on to another project if they have one.