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Verified partner opportunity

Audiobook QA Expert — Portuguese (Brazil)

$15 - $20 / hour

MercorRemote — preferred: BrazilHourly contract

Help make the next generation of AI-narrated audiobooks sound genuinely human.

Is this a fit?

  • You can show recent, specific work involving AI evaluation.
  • The listed commitment of 20 hours/week fits your schedule.
  • You can communicate your reasoning clearly in the application language.

Apply on Mercor

Complete your application with Mercor. No HumanitApp account or fee.

What happens next

  1. Continue to the official listing and enter your application details; have your resume ready.
  2. Complete the role-specific screen or assessment requested by the partner.
  3. Confirm availability, location eligibility and work authorization if requested. The partner determines the exact process.

Last verified 2026-09-26

Exact listing verified. HumanitApp is independent from Mercor and may receive a referral fee; the partner controls assessment and hiring.

Read our Mercor review
Ready to continue?Audiobook QA Expert — Portuguese (Brazil)

Official role description

Help make the next generation of AI-narrated audiobooks sound genuinely human.

1. Overview

We're building a team of native Portuguese speakers who love audiobooks to help evaluate AI-narrated (text-to-speech) audiobooks in Brazilian Portuguese. You'll listen the way a real audiobook fan does

but with a careful, analytical ear

and flag the moments where the narration slips, so the underlying models can be made better.

This is remote, part-time work at roughly 20 hours per week (about 4 hours per day). You can be based anywhere, though we prefer people living in a region where Brazilian Portuguese is natively spoken.

2. What You'll Do • Listen to AI-narrated audiobooks in Brazilian Portuguese and assess how natural, accurate, and enjoyable the narration is. • Spot and log errors in the synthesized speech

skipped, added, or mispronounced words; numbers read incorrectly; abbreviations expanded wrongly; unnatural phrasing or intonation; audio glitches and artifacts. • Categorize each issue and mark the exact span where it occurs, using our review tooling. • Report on overall listener satisfaction and where the narration feels natural versus where it breaks the experience. • Work consistently and carefully across many hours of audio without losing attention to detail.

3. Who We're Looking For • Native or near-native fluency in Brazilian Portuguese, and an active, genuine audiobook listener

someone who listens regularly and has real opinions about what makes a good listen. • Enough working English to report clearly and communicate with the team (you do not need to be bilingual). • Some experience with annotation, labeling, transcription, proofreading, linguistics, or other detail-oriented review work. • A sharp, patient ear and the discipline to stay accurate over long listening sessions. • Reliable availability of about 20 hours per week on a part-time basis.

Nice to Have • Prior experience on AI training-data, model-evaluation, or audio/QA annotation projects. • A background in language, editing, voice, or audio production.

Relevant skills

AI evaluation

Who this role may fit

This opportunity may suit professionals with relevant experience in AI evaluation. Review the official description and requirements before applying.

Compensation context

The listing states $15 - $20 / hour. Confirm the final rate, workload, and payment terms during the official application process.

Qualification checklist

  • You can show recent, specific work involving AI evaluation.
  • The listed commitment of 20 hours/week fits your schedule.
  • You can communicate your reasoning clearly in the application language.
  • You are comfortable with project availability and hours varying over time.

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Before you apply

Referral and application questions

Can I start immediately through an Instant Work Offer?

This listing is not a promise of immediate work. Mercor may send separate offers to prequalified candidates. Read how Instant Work Offers work.

How should I compare the listed pay?

The listing states $15 - $20 / hour. Confirm the final rate, workload, and payment terms during the official application process.

Does Apply use a referral link?

Yes. The button opens the exact verified Mercorlisting using the referral URL published for this role.

Is HumanitApp the employer?

No. HumanitApp independently curates the opportunity. The partner platform manages applications and hiring decisions.

Must I share my details here?

No. Choose the primary Apply action to continue directly without giving HumanitApp your name or email address.

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