US Citizen Native Editor Needed

I have an academic-style document written in English that now needs a final, expert polish from a United States citizen whose first language is English. Your job is to correct every grammatical slip, refine... (Budget: $15 - $25 USD, Jobs: Academic Writing, Content Development, Content Writing, Copy Editing, Editing, English Grammar, Language Tutoring, Proofreading, Research Writing, Technical Writing)