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Who this role suits
Native or near-native speakers who want flexible remote work built on their language skills. Usually no degree is needed.
Full job description
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
Last checked open on Oct 28, 2026. Job description provided by Mercor.
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