Spanish Audiobook Reviewer - AI Trainer

About the job
Mercor  connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include  Benchmark ,  General Catalyst ,  Peter Thiel ,  Adam D'Angelo ,  Larry Summers , and  Jack Dorsey .
Position:  Audiobook QA Expert — Spanish (US)
Type:
Contract
Compensation:
$15–$20/hour

Location:

Remote
Commitment:
20 hours/week
Role Responsibilities
Listen to  AI-narrated audio books  in Spanish and assess narration quality for naturalness, accuracy, and enjoyment.
Spot and log errors in synthesized speech, including skipped, added, or mispronounced words, incorrect numbers, and unnatural phrasing or intonation.
Categorize issues and mark the exact span where they occur using our review tooling.
Report on overall listener satisfaction and identify where narration feels natural versus where it disrupts the experience.
Work consistently and carefully across many hours of audio without losing attention to detail.
Qualifications
Must-Have
Native or near-native fluency in Spanish (US / North American Spanish).
Regular audiobook listener with opinions on what makes a good listen.
Working English proficiency for clear reporting and team communication.

Experience with annotation, labeling, transcription, proofreading, linguistics, or similar detail-oriented review work.
Reliable availability of about 20 hours per week on a part-time basis.
Preferred

Experience with  AI training-data , model-evaluation, or audio/QA annotation projects.
Background in language, editing, voice, or audio production.
Application Process (Takes 20–30 mins to complete)
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