To be clear, the goal is to watch the candidate build something using the prerequisite skills expected for the position. I'm not prescribing 3 hour sessions, or

To be clear, the goal is to watch the candidate build something using the prerequisite skills expected for the position. I'm not prescribing 3 hour sessions, or JavaScript. Target a 45 minute session. Target whatever tools, languages, etc are expected for the role. Maybe that means being language agnostic. Whatever is appropriate. Watching folks make something -- for any significant duration -- is perhaps a better estimator of a candidate's genuine job ability than testing how well they approximate an algorithm textbook. Well...that's the assumption, anyway.