I have a similar practice. One of the best engineers I ever hired bombed the tech interview, and I went poking in his github. Found a project that seemed pretty

I have a similar practice. One of the best engineers I ever hired bombed the tech interview, and I went poking in his github. Found a project that seemed pretty neat and reached out the candidate with an email like: "Hey, I realized we didn't get a chance the other day to go over something you wrote independent of the hiring pressure. Would you mind a call where we talk about $project?" Since that candidate was much more comfortable talking about their own project, the interview went great. I learned a little rust, and we got a good engineer :)