Spanish Subtitle Proofreading Needed (only spanish native speaker)

I have around 200 of Spanish subtitle files that accompany corporate technical-skills training videos, and I need them polished before release. The language already sits at a solid draft level, but I want every line to follow Chicago Manual of Style conventions, read naturally to a professional audience, and stay perfectly in sync with on-screen speech.

You will receive the original subtitle files (SRT) and any relevant reference material. I expect you to correct grammar, punctuation, capitalization, and terminology, flag or fix timing issues if you notice them, and preserve all formatting tags.

Deliverables
• A clean, final Spanish subtitle file in the original format
• A marked-up version (or change log) showing every edit for easy review

Turnaround and accuracy are key because the videos go live soon after approval. If you have proven experience proofreading Spanish subtitles for corporate or technical content, I would love to collaborate.

Translation is done by AI so if you think to use AI your work is not necessary, we need a human proofreader
I need cost for every 1000 words