I applied through university. The process took 3 days. I interviewed at Susquehanna International Group (Philadelphia, PA)
Interview
Originally began interview process through on-campus recruiting. There was an initial phone-screen leading to an on-site interview. Standard fare probability questions and brain-teasers and a strong emphasis on poker (both in interview questions and as a vehicle for probabilistic thinking). Not really that much focus on programming or language-specific questions...