Where you'll find those doing a job in social media industry employing a number of hacks! (8)
I believe the answer is:
newsroom
This clue could be a double definition.
'where you'll find those doing a job in social media industry employing a' is the first definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'number of hacks' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
Can you help me to learn more?
(Other definitions for newsroom that I've seen before include "press centre" , "Own Morse (anag)" , "Where reporters work" , "where headlines are made" .)