MercorVoice & audio
Audio Engineer (Speech / TTS Audio Specialist) – Brazilian Portuguese
$50/hr
About this role, in Mercor's words
We're looking for audio engineers with strong experience editing and quality-checking voice recordings for speech and text-to-speech (TTS) applications , specifically for Brazilian Portuguese-language audio . This role focuses on preparing high-quality audio datasets for machine learning systems, ensuring clarity, consistency, and technical compliance across large volumes of Brazilian Portuguese speech data. Native or near-native Brazilian Portuguese fluency is required to accurately assess speech quality, pronunciation, and naturalness.
Candidate background
Basic Qualifications
- Native or near-native Brazilian Portuguese speaker with strong listening intuition for Brazilian Portuguese speech nuances
- Experience editing speech or voice recordings (not just music production)
- Strong understanding of speech audio quality standards and common issues in recorded dialogue
- Hands-on experience with tools like iZotope RX, Pro Tools, or similar audio restoration software
- Ability to identify and fix artifacts, inconsistencies, and technical defects in audio
- Experience working with high-volume audio datasets or structured workflows
Preferred Qualifications
Show all 4 itemsHide these 4 items in Preferred Qualifications
- Experience working with TTS vendors or platforms
- Prior involvement in speech ML, voice AI, or dataset creation/annotation workflows
- Familiarity with audio QA pipelines, labeling, or evaluation processes
- Experience directing or editing Brazilian Portuguese voice talent recordings
Quoted from selected sections of Mercor's posting. The full posting may state other conditions. Read the full posting
A closer look
More context, when you need it.
Full job descriptionThe original posting, in Mercor's words
Posted by Mercor, reproduced here so you can judge the role before clicking. Original posting ↗
Overview We're looking for audio engineers with strong experience editing and quality-checking voice recordings for speech and text-to-speech (TTS) applications , specifically for Brazilian Portuguese-language audio . This role focuses on preparing high-quality audio datasets for machine learning systems, ensuring clarity, consistency, and technical compliance across large volumes of Brazilian Portuguese speech data. Native or near-native Brazilian Portuguese fluency is required to accurately assess speech quality, pronunciation, and naturalness.
What You'll Do
• Edit and process Brazilian Portuguese voice recordings for use in TTS and speech AI systems
• Perform audio cleanup including silence trimming, breath reduction/removal, de-clicking, de-essing, and noise reduction
• Conduct detailed quality assurance checks for:
• Clipping and distortion
• Background noise and artifacts
• Loudness consistency and level balancing
• Ensure audio meets strict technical specifications for ML training pipelines
• Evaluate recordings for Brazilian Portuguese pronunciation accuracy, naturalness, and fluency
• Work with large batches of recordings, maintaining consistency and throughput
• Collaborate with teams working on Brazilian Portuguese speech datasets, voice talent recordings, and model training workflows
Basic Qualifications
• Native or near-native Brazilian Portuguese speaker with strong listening intuition for Brazilian Portuguese speech nuances
• Experience editing speech or voice recordings (not just music production)
• Strong understanding of speech audio quality standards and common issues in recorded dialogue
• Hands-on experience with tools like iZotope RX, Pro Tools, or similar audio restoration software
• Ability to identify and fix artifacts, inconsistencies, and technical defects in audio
• Experience working with high-volume audio datasets or structured workflows
Preferred Qualifications
• Experience working with TTS vendors or platforms
• Prior involvement in speech ML, voice AI, or dataset creation/annotation workflows
• Familiarity with audio QA pipelines, labeling, or evaluation processes
• Experience directing or editing Brazilian Portuguese voice talent recordings
Ideal Candidate Profile
• Detail-oriented with strong critical listening skills in Brazilian Portuguese
• Comfortable working with repetitive, high-precision tasks at scale
• Able to balance speed and quality in production environments
• Familiar with the nuances of human Brazilian Portuguese speech vs synthetic voice requirements
Working with MercorPay, getting started and work, from Mercor's own pages
What the platform publishes in general. These are not extra terms confirmed for this particular role.
- Getting paid
- Hourly work is paid every Wednesday for the previous week, through Stripe Connect or Wise, whichever Mercor assigns to your region. Stripe holds the first payout for 7 days. talent.docs.mercor.com/how-to/payments, talent.docs.mercor.com/policies/contracts
- Before your first paid task
- An AI interview of about 20 minutes, reused for other roles that need it, then any assessments the role asks for. Before logging hours: ID verification through Persona, a tax form, the contract documents, the Insightful time tracker, and a background check the onboarding guide says usually takes one to two weeks. talent.docs.mercor.com/support/ai-interview, talent.docs.mercor.com/how-to/apply, talent.docs.mercor.com/policies/contracts, talent.docs.mercor.com/how-to/id-verification, talent.docs.mercor.com/working/project-onboarding
- How much work
- Hearing back after the AI interview usually takes 2 to 4 weeks. When a project ends you are not moved to a new one automatically. talent.docs.mercor.com/support/ai-interview, talent.docs.mercor.com/support/project
- Contract
- Independent contractor with Mercor.io Corporation of San Francisco, which deducts no taxes. talent.docs.mercor.com/policies/taxes-work-authorization, talent.docs.mercor.com/support/legal
Read on the pages linked above on 23 Sep 2026. Platforms change these terms, so check the linked page before you rely on one.
Alex's experience on MercorA personal account, not a promise about your project
Alexruns this site and has worked on Mercor himself. Written 31 Aug 2026.
- Every interview I took used an AI interviewer. They always checked my microphone and camera and asked me to share my screen, and some included a timed exercise of around 25 minutes.
- Many later applications needed no new interview from me. With the required assessments complete and no other outstanding steps, applying could be close to one click.
- The application I checked did not ask for a rate. My offer matched my minimum in Work Preferences. That does not establish that Mercor always caps higher offers at your preference.
- Onboarding and setup came to about 4 hours, with more security and tool setup. Of the three platforms I worked on, it was the most complicated for me. That is an estimate from my projects, not a platform average.
- Mercor required the Insightful tracker on my project. I observed app and website usage monitoring, and I am unsure which screenshot settings applied, so check the configuration.
- I was paid for hours logged, once every 14 days, and I have not experienced late or incorrect payments. That was my arrangement. Mercor's current documentation describes weekly payout cycles, so check your own offer.
One person's applications, not a promise about yours.
What happens after you apply, first-handHow does the pay compare?Across Voice & audio roles, not this role alone
From our own daily reads of every open listing on the platforms we follow, not from Mercor's posting. How we count.
Pay across the field: Voice & audio
Across 368 roles in this field with a stated hourly rate in US dollars, on 11 platforms, the middle half pays $20 to $50 an hour at the top of the range, and the median is $30. This role's top rate, $50, is in the top quarter. Of the 92 distinct rates we count, 66 are lower and 20 are higher.
| Platform | Roles | Top of range, per hour |
|---|---|---|
| Alignerr | 138 | $20 to $280 · median $50 |
| Meridial (Invisible) | 51 | $20 to $65 · median $31 |
| AfterQuery | 49 | $30 to $135 · median $55 |
| micro1 | 41 | $12 to $100 · median $30 |
| Lionbridge | 39 | $10 to $45 · median $22 |
Other open roles in Portuguese
54 roles with a stated hourly rate in US dollars also ask for Portuguese, on 10 platforms. Their top rates run from $10 to $120 an hour, with a median of $30.
| Platform | Roles | Top of range, per hour |
|---|---|---|
| Meridial (Invisible) | 15 | $65 |
| RWS TrainAI | 15 | $21.60 to $36 · median $26 |
| Alignerr | 10 | $30 to $120 |
| Mercor (this platform) | 4 | $20 to $45 |
| micro1 | 3 | $18 to $40 |
Sources and listing historyWhere this information comes from
This listing's history
- First seen here on 13 Oct 2026.
- The listed pay has not changed since then.
- Posted by Mercor
- First seen by AIPayList
- Last seen live
- Listing ID
- list_AAABoTSnXon2NKOaCWVFA6I-
Pay as the source states it: “50 USD HOUR”.
Platforms sometimes change a rate after posting. Every listing here is re-read at least once a day and corrected when its source moves, so a difference you see on the platform is usually a change made since the last read. How freshness works.
Keep exploring
More Portuguese roles
Related field, different requirements. Check each role's own page before you apply.