proofreader
US /ˈpruːfˌriː.dɚ/
UK /ˈpruːfˌriː.dɚ/

1.
a person who reads text and marks errors, especially in grammar, spelling, and punctuation, before it is printed or published
:
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The author hired a professional proofreader to review her manuscript.
•
As a proofreader, attention to detail is crucial.