Hiring moved very quickly following the initial conversation. A phone call/digital whiteboard exercise was scheduled. This was followed up a week later with an in-person, on-site interview. It was scheduled for four people (each 1-on-1).

Initial conversation, phone/digital whiteboard, followed by an in-person interview (four people, 1-on-1).

Describe a design pattern. Whiteboard a simple example. We extended it to consider implications of a multi-threaded environment.