I applied online. The process took 6 weeks. I interviewed at GitHub (Remote, OR) in Dec 2016
Interview
Great response times from the recruiters, who set me up with an interview with the person who would have been my boss. Overall, very smooth experience, although it took a while for them to get back to me after my initial application, though that likely had to do with the American Thanksgiving holiday.
Interview questions [1]
Question 1
Throughout the process, the interviewer asked me my opinions on how I would do X or Y and would ask me why. I got the impression that the interviewer was very open-minded as to how the forthcoming community would be used and managed.