Unless you're willing to spend more than 20~30% of your engineer's precious time on the hiring process (or have GPT-7 or whatever GAI lol), it will always be BS. And that's not scalable; this could work when your hiring is mostly through employee's personal/professional network since ROI will be better than average, but when you need to hire thousands new employees it will quickly become a bottleneck.
The only thing you can do is designing an acceptable level proxy done with high efficiency. Unfortunately we don't really have a good way there to figure out something more efficient than coding interview + system design interview yet. A good interviewer can still extract a surprising amount of valuable signals within 45 mins but not everyone is interested in being a good interviewer.
The only thing you can do is designing an acceptable level proxy done with high efficiency. Unfortunately we don't really have a good way there to figure out something more efficient than coding interview + system design interview yet. A good interviewer can still extract a surprising amount of valuable signals within 45 mins but not everyone is interested in being a good interviewer.