I applied through college or university. The process took 2 weeks. I interviewed at Susquehanna International Group (Philadelphia, PA) in Dec 2013
Interview
Got an interview through campus recruiting. It started with an initial phone screening (lasting around 20min) that consisted of introductory probability questions. Less about correct/incorrect answers, but more about your thought process. One week later, had an in-person interview in the Bala Cynwyd office that consisted of more behavioral and resume questions.