On-line fixer found among stereotype geeks (3)

I believe the answer is:

peg

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'on-line fixer' is the definition.
The definition suggests a singular noun which matches the answer.

'among stereotype geeks' is the wordplay.
'among' indicates a hidden word.
'PEG' is hidden in the letters of 'stereotype geeks'.

'found' acts as a link.

Can you help me to learn more?

(Other definitions for peg that I've seen before include "Limit" , "The girl to hang your hat on" , "The woman" , "Wire tensioner" , "Projecting pin" .)

I've seen this clue in The Guardian.

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