I responded to a job posting on the University job page, emailed the manager in charge of the posting and scheduled an interview. This was all pretty informal by the way, we chatted on the phone and arranged to meet that same week. The meeting was very informal as well, he asked a list of questions, we talked about interests and University culture. This last big was important to him and turned out to be important in general. You can't survive here if you are not comfortable with working in a fractured mess of relationships and fiefdoms.