Proofread Corporate Official Documents

I have a series of official documents that will circulate internally within our corporation and, later, to external partners. I need a sharp-eyed English proofreader to catch spelling, grammar, punctuation,... (Budget: $2 - $8 USD, Jobs: Business Writing, Content Writing, Document Checking, Editing, English (US) Translator, English Grammar, Proofreading, Technical Writing)