I heard about the opening of a new Five Guys location that was close to my old job (also at a restaurant) so I walked to Five Guys on the day of open interviews before they began operations. I filled out an application outside, then waited my turn. It was very informal, one on one with an assistant manager. He was straightforward with simple questions, and sent me back to speak with the manager. A couple days later, they called to offer me a position.