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Audio Engineer (Speech / TTS Audio Specialist) – Brazilian Portuguese

$20–$30/h

Remote

Role overview

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.

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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

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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

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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

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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

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Future of work · September 2026

How big is the remote / hybrid opportunity?

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Sporterer Insights · Approximate figures based on World Bank and ILO estimates
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