So even if there’s not explicit bias against older devs there is implicit bias by favoring quick whiteboard speed (memorization/practice) over the practiced thoughtfulness of older devs. And a one-off interview focused heavily on algos can sink anyone. It only takes one.
This isn’t limited to FB. The $Elite companies I got offers from are the ones where I lucked through that one tricky interview by knowing it offhand.
I worry as I get older, even as I become a stronger developer, I will become less and less able to marathon through these interviews. No wonder so many older devs switch to management.
Yet, when blasting interviews, I have found that people tend to conflate the two.
I agree that 60 minutes on a whiteboard or a laptop is not the best way to ask someone to solve a coding problem. Homework is worse, though. Maybe 90 minutes is a better time slot.
At least in-person, both parties invest about as much time into the interview.