You need someone who understands PPC on the interview, even if you don't need to hire someone of that level or expertise. Otherwise they can just unfortunately

You need someone who understands PPC on the interview, even if you don't need to hire someone of that level or expertise. Otherwise they can just unfortunately obscure performance and the way they manage their accounts won't be clear. There's some good advice in this thread but some of the specifics aren't consistent with current best practice. Context: 8 years PPC experience