I was referred by an employee and had a phone chat with the manager. This was followed by a phone screen, then a day with five 45-minute onsite interviews, including lunch.

Each interview was two-on-one.

The process took three and a half months overall, but they assured me this was abnormally slow due to WWDC and a large team reorg.

Good questions, interesting people, and awesome discussions! I'd do it again just for fun!

A runtime has a struct Class { Class* super_class; struct { id_t method_name; void (method_pointer); } methods[]; }.

How would you optimize for dynamic dispatch?

How do you familiarize yourself with a new, large codebase? How would you go about replacing a component in it?