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Mercor

Audio Engineer – Speech, TTS Audio Specialist – Brazilian Portuguese

Mercor

. Edit and process Brazilian Portuguese voice recordings for TTS and speech AI systems .

Posted 10/13/2026contractRemote • United StatesMid-LevelSenior💰 $20 - $30 per hourWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in editing and processing Brazilian Portuguese voice recordings for TTS and speech AI systems, ensuring high audio quality and adherence to technical specifications. Proficient in audio cleanup techniques and quality assurance processes for speech datasets.

Highest-signal resume keywords
Brazilian Portuguese FluencyAudio Restoration Software ExperienceSpeech Audio Quality StandardsHigh-Volume Audio Datasets ManagementCritical Listening Skills

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Audio CleanupVoice Recording EditingQuality Assurance ChecksAudio Artifact IdentificationDataset Preparation
Soft Skills
Detail-OrientedStrong Listening Intuition
Tools & Technologies
IZotope RXPro Tools
Industry Keywords
TTSSpeech AIMachine LearningVoice Talent RecordingsAudio QA Pipelines

About the role

Key responsibilities & impact
  • Edit and process Brazilian Portuguese voice recordings for TTS and speech AI systems
  • Perform audio cleanup, including silence trimming, breath reduction/removal, de-clicking, de-essing, and noise reduction
  • Conduct quality assurance checks for clipping, distortion, background noise, artifacts, loudness consistency, and level balancing
  • Ensure audio meets technical specifications for machine-learning training pipelines
  • Evaluate Brazilian Portuguese pronunciation accuracy, naturalness, and fluency
  • Process large batches of recordings while maintaining consistency and throughput
  • Collaborate on Brazilian Portuguese speech datasets, voice talent recordings, and model-training workflows
  • Prepare high-quality audio datasets for AI systems training and enhancement

Requirements

What you’ll need
  • Native or near-native Brazilian Portuguese fluency
  • 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 iZotope RX, Pro Tools, or similar audio restoration software
  • Ability to identify and fix audio artifacts, inconsistencies, and technical defects
  • Experience working with high-volume audio datasets or structured workflows
  • Familiarity with TTS vendors or platforms preferred
  • Prior involvement in speech ML, voice AI, or dataset creation/annotation workflows preferred
  • Familiarity with audio QA pipelines, labeling, or evaluation processes preferred
  • Experience directing or editing Brazilian Portuguese voice talent recordings preferred
  • 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 nuances of human Brazilian Portuguese speech versus synthetic voice requirements
  • Must be unable to require H1-B or STEM OPT support

Benefits

Comp & perks
  • Fully remote role
  • Flexible schedule / work on your own schedule
  • Weekly payments via Stripe or Wise
  • Projects may be extended, shortened, or concluded early depending on needs and performance
  • Competitive pay
  • Referral bonus of up to $280 per successful referral
  • Reasonable accommodations upon request