Mexican, Ecuadorian and El Salvador translation/Proofreading

Hello Mexican, Ecuadorian and El Salvador native speakers, Mexican, Ecuadorian and El Salvador translators and Proofreaders needed.
I've a legal documents in SPANISH that need to be proofread. I'm looking for professional one, who can provide me 100% perfect HUMAN proofreading with short deadline. It's for long term working opportunity.
NOTES: Any google/machine or poor proofreading will be reiected.
Thanks!