Audio Quality Analyst - Ai Trainer

Mercor; São Paulo; Remote; BRL 105,000 - 140,000; Part time

Benefits offered by this job

Flexible schedule

Remote work

Job summary

Mercor is seeking an Audiobook QA Expert — Portuguese (Brazil) to evaluate AI-narrated audiobooks for quality, accuracy, and listener enjoyment. This remote, part-time role requires strong Portuguese skills and thoughtful feedback on narration.

You will log errors, categorize issues, and report on overall listener satisfaction. A background in annotation or transcription helps, along with English reporting capability.

Qualifications

• Native or near-native fluency in Brazilian Portuguese.
• Active audiobook listener with opinions on quality.
• Working knowledge of English for reporting and communication.
• Experience in annotation, labeling, transcription, or similar detail-oriented work.
• Reliable availability for 20 hours/week on a part-time basis.

Responsibilities

• Listen to AI-narrated audiobooks in Brazilian Portuguese and assess narration quality, accuracy, and enjoyment.
• Spot and log errors in synthesized speech, including mispronunciations and unnatural phrasing.
• Categorize issues and mark their exact span using our review tooling.
• Report on overall listener satisfaction and identify natural versus disruptive narration moments.
• Work consistently across many hours of audio, maintaining attention to detail.

Skills

Brazilian Portuguese fluency

Active audiobook listener

English for reporting

Annotation/ labeling/ transcription

Detail-oriented work

Job description

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 — Portuguese (Brazil)
Type: Contract
Compensation: $15–$20/hour
Location: Remote
Commitment: 20 hours/week

Role Responsibilities

• Listen to AI-narrated audiobooks in Brazilian Portuguese and assess narration quality, accuracy, and enjoyment.
• Spot and log errors in synthesized speech, including mispronunciations and unnatural phrasing.
• Categorize issues and mark their exact span using our review tooling.
• Report on overall listener satisfaction and identify natural versus disruptive narration moments.
• Work consistently across many hours of audio, maintaining attention to detail.

Qualifications

Must-Have

• Native or near-native fluency in Brazilian Portuguese.
• Experience as an active audiobook listener with opinions on quality.
• Working knowledge of English for reporting and communication.
• Experience in annotation, labeling, transcription, or similar detail-oriented work.
• Reliable availability for 20 hours/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.

Resources & Support

• For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome
• For any help or support, reach out to: [e-mail]