This works if you already know how to code, and can come up with a quick 1 hour problem for them to solve. And it is a lot of work on your side as well. Filtering the list, checking the code, making sure they didn't cheat by checking github logs, pay someone else to review the candidates.
It would almost be quick to post the job online, break it up into stages, hire someone, check their progress, and move to the next person if their work is not satisfactory.
It would almost be quick to post the job online, break it up into stages, hire someone, check their progress, and move to the next person if their work is not satisfactory.