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Mercor

Sonic Audit Specialist, Portuguese

Mercor

. Audit Amazon Sonic multilingual transcription data by listening to recordings and judging transcription accuracy .

Posted 10/13/2026contractRemote • United StatesMid-LevelSenior💰 $25 per hourWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates native or near-native proficiency in Brazilian Portuguese and strong English reading and writing skills, with a disciplined approach to applying written rubrics for transcription accuracy assessments. Capable of careful listening and critical error identification in audio recordings.

Highest-signal resume keywords
Native Or Near-Native Portuguese ProficiencyStrong English Reading And WritingTranscription ExperienceAttention To DetailCalibration Completion

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
Transcription Accuracy AssessmentError Code ApplicationWord-Level Forced Alignment ReviewBoundary CorrectionSegment Tagging
Soft Skills
Clear Feedback WritingCareful Listening Skills
Tools & Technologies
Audio Editing ToolsWaveform Tools
Industry Keywords
Linguistic AnnotationQuality AssuranceLocalizationSubtitlingAI Data Annotation

About the role

Key responsibilities & impact
  • Audit Amazon Sonic multilingual transcription data by listening to recordings and judging transcription accuracy
  • Apply fixed error codes, assign pass/fail verdicts, and write a short rationale for each judgment
  • Review word-level forced alignment segments and verify start/end timestamps
  • Verify that reference transcriptions match the spoken form
  • Correct inaccurate boundaries, split or merge segments, add missing segments, and remove segments containing no word
  • Tag every applicable error code and explain in plain language why a task passed or failed
  • Call out critical errors first so failure reasons are clear
  • Complete calibration before beginning production work

Requirements

What you’ll need
  • Native or near-native command of Portuguese as spoken in Brazil
  • Either born and raised in a region where Brazilian Portuguese is dominant, or fully fluent with five or more years of residence in such a region
  • Strong English reading and writing
  • Ability to read a detailed rulebook and write clear feedback in English
  • Disciplined application of written rubrics across hundreds of judgments
  • Careful listening skills, including distinguishing similar sounds and identifying word boundaries in continuous speech
  • Prior transcription, subtitling, localization, linguistic annotation, or QA experience is a strong signal
  • Helpful but not required: prior AI data annotation or model evaluation work
  • Helpful but not required: phonetics or linguistics background
  • Helpful but not required: experience with audio editing or waveform tools
  • Must complete a short calibration phase before production work
  • Must be engaged as an independent contractor
  • H1-B and STEM OPT candidates are not supported

Benefits

Comp & perks
  • Fully remote role
  • Flexible schedule / work on your own schedule
  • Weekly payments via Stripe or Wise
  • Opportunity to collaborate with leading researchers
  • Referral payments of up to $100 for each successful referral (referral limits apply)