Audio Engineer (Speech / TTS Audio Specialist) – Brazilian Portuguese
- Pay
- $20–$30/hr
- Location
- Worldwide
- Type
- Contract
- Posted
- Oct 13, 2026
- Languages
- English, Portuguese
- Who can apply
- Only Albania, Algeria, Angola, Antigua and Barbuda, Argentina, Australia, Austria, Bahrain, Bangladesh, Belgium, Benin, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Canada, Chile, Colombia, Costa Rica, Croatia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, Gabon, Germany, Ghana, Greece, Guatemala, Guyana, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Ivory Coast, Jamaica, Japan, Jordan, Kuwait, Laos, Latvia, Lithuania, Luxembourg, Madagascar, Malaysia, Malta, Mauritius, Mexico, Monaco, Mongolia, Morocco, Mozambique, Namibia, Nepal, Netherlands, New Zealand, Nigeria, North Macedonia, Norway, Oman, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Rwanda, Saint Lucia, San Marino, Saudi Arabia, Senegal, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Tanzania, Thailand, Gambia, Trinidad and Tobago, Tunisia, Turkey, United Arab Emirates, United Kingdom, United States, Uruguay, Uzbekistan, Vietnam
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
Quick answers
How much does the Audio Engineer (Speech / TTS Audio Specialist) – Brazilian Portuguese job at Mercor pay?
Mercor lists the pay as $20–$30/hr. That is about 30% below the median of $35.50 an hour for AI Expert - Music & Audio roles here (from 23 listings).
Who can apply for this AI training job?
Only Albania, Algeria, Angola, Antigua and Barbuda, Argentina, Australia, Austria, Bahrain, Bangladesh, Belgium, Benin, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Canada, Chile, Colombia, Costa Rica, Croatia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, Gabon, Germany, Ghana, Greece, Guatemala, Guyana, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Ivory Coast, Jamaica, Japan, Jordan, Kuwait, Laos, Latvia, Lithuania, Luxembourg, Madagascar, Malaysia, Malta, Mauritius, Mexico, Monaco, Mongolia, Morocco, Mozambique, Namibia, Nepal, Netherlands, New Zealand, Nigeria, North Macedonia, Norway, Oman, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Rwanda, Saint Lucia, San Marino, Saudi Arabia, Senegal, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Tanzania, Thailand, Gambia, Trinidad and Tobago, Tunisia, Turkey, United Arab Emirates, United Kingdom, United States, Uruguay, Uzbekistan, Vietnam. The role is remote, so you work from home or anywhere you are allowed to apply from.
Is this job remote, and what kind of work is it?
Yes, it is remote. The engagement type is contract. Mercor hires for this role through its own application, which you reach from the Apply now button.
Which languages does this job need?
English, Portuguese.
How do I apply, and does it cost anything?
Select Apply now to go to Mercor's application. Legitimate AI training work never asks you to pay to apply or to buy equipment. AI Training Jobs does not charge applicants. The listing was posted Oct 13, 2026 and is refreshed daily; closed jobs are marked as such.
About Mercor
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