Really, don’t do it – don’t hire friends! At least don’t hire them because they are your friends.
I know – they really are a great person, they have a strong work ethic, communicate well, get along with seemingly everyone. Shouldn’t they have the skills as well as the attributes you defined as being necessary for success in the role. You took the time to define the role, right? Don’t give in and skip this step. Grandmother Dierker used to say (I hated it when she said this) “if you don’t have time to do it right, when will you have time to do it over!”
Twice in the past 30 days I’ve heard “You’re right, I need someone who is actually capable of doing this job. How do I fire someone who a) attends my church or b) has a child on my child’s team?” Sorry, no easy answer – but yes, you have to do it!