I've hired a fair number of engineers, and I still can't reliably tell in an interview who'll actually be good once they're on the team. Some picks work out great; others looked strong for an hour and then struggled for months. The interview tells me something, just not the thing I really need to know.
More people experience this than they realize.
You interview engineers but can't reliably tell who'll actually be good on the job.
If this sounds familiar, the Library can help you find the bigger picture.