On a certain job offer / job request websites, they openly talk about admins for hire and need system administrator.
There is no verification or any other criteria. Only thing is that the company / freelancer is trustable ( in terms of availability, skill set and financial transactions etc ) or not. If they suit company needs, here goes the contract.
Funny how things work in the freelancer / online world. I was completely puzzled by the fact that the company have no idea who is going to handle their server and customer data.