Generally past experience is an indicator that said person worked at a certain tier level (tier 1-4 companies) and was well adjusted healthy human being that he

Generally past experience is an indicator that said person worked at a certain tier level (tier 1-4 companies) and was well adjusted healthy human being that held the job for a healthy amount of time. You verify this by simple background checks. Any shitbag background check company can call up a HR department and verify employment dates, you don’t need to call references yourself or get any references at all. It’s a clinical procedure that a third party does for you. That is a solid indicator of a normal reasonable employee. Skills is something you have to verify separate to that. This sounds like you didn’t do a w2 check or a proper skill screen. It’s on you, not them. Surely you aren’t one of those people that believes dev resumes that say ‘architected this that and this in this that and this language’, are you? Lol Dev resumes are a running joke. Do a w2 check, followed by a take home project that is a good representation of the work you want them to do. Ditch the leetcode stuff, and gut feeling bullshit, and you won’t ever have an issue.