Manufacturer of locks has a job designing stuff that goes over many people's heads
I believe the answer is:
wigmaker
'a job designing stuff that goes over many people's heads' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'manufacturer of locks' is the wordplay.
I cannot really understand how this works, but
'manufacturer' could be 'maker' ('maker' can be a synonym of 'manufacturer') and 'maker' is present in the answer.
The remaining letters 'wig' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'has' is the link.
Can you help me to learn more?