BarCamp is an unconference. There’s no speaker list or fixed schedule until the actual event. All content comes from the attendees. Anyone can host a session, participate in discussions, demo a project, talk about code, discuss at lengths about program design.
Tasked with building an API for your company but don't have a clue where to start? Taken over an existing API and hate it? Come and get help, talk with other API developers, share horror stories or show off.