I work sporadically as a programming contractor for a company that wants to hire its first full-time programmer. I was asked by the Director of Operations for guidance in the hiring and vetting process.
The recruitment services that they've used in the past have offered supposedly well-vetted candidates that couldn't hold their own in simple programming tasks (I have done several code-reviews for them in the past).
As I am unable to help in the hiring process, I would like to recommend a professional candidate vetting service of some kind, assuming such services exist.
The only thing that I've come up with through my Google searches is automated testing, like that offered by DevSkiller. While it looks like it's better than nothing, I'm sure that they would rather pay a real person to vet their candidates.
Do such services exist? Can anyone point me in the right direction?