I applied through a recruiter. The process took 3 weeks. I interviewed at Burns & McDonnell
Interview
Was referred to a college recruiter through a company contact, short pre-interview asking about college extracurriculars, grades, career aspirations, etc. Recruiter informed me about possible job placement, was contacted later by hiring manager for a full interview. Took an hour, went over quite a bit. Nothing too strenuous or really head-scratching, just a lot of behavioral questions.