I've been hiring people for 10 years and far and away the best results (in order):

  1. I've worked with them before or they were referred by someone I trust
  2. Test project

Never had a good result from a question-based interview. I just don't have the numbers for it to work.

Think about it, if the probability of a random dev knowing your stupid questions is 1%, then you would need to interview 100 people to find that 1.

The only companies that can do that at scale are FAANG.