Sonic Audit Specialist - Portuguese

• Audit AI training data in Brazilian Portuguese.
• Listen to a recording of human or agent speech, read the transcription, and judge whether it accurately captures what the speaker said.
• Apply a fixed set of error codes, assign a pass or fail verdict, and write a short rationale explaining the decision for transcriptions.
• Review audio that has already been segmented at the word level by an automated system.
• Verify that the start and end timestamps match where the word actually begins and ends, and that the reference transcription matches the spoken form.
• Correct word boundary timestamps, split or merge segments, add missing segments, or remove segments that contain no word.
• Tag every applicable error code and explain in plain language why the task passed or failed.
• Call out critical errors first so the reason for a failure is obvious to the reader.

• Be a native or near-native speaker of Portuguese as spoken in Brazil.
• Have lived in a region where Brazilian Portuguese is dominant for five or more years if not born there.
• Possess strong English reading and writing skills.
• Be able to apply a written standard consistently.
• Be able to distinguish similar sounds, identify word boundaries in continuous speech, and tell genuine acoustic ambiguity apart from a clear annotator error.

• Have prior transcription, subtitling, localization, linguistic annotation, or QA experience.
• Have prior AI data annotation or model evaluation work experience.
• Have a phonetics or linguistics background.
• Have experience with audio editing or waveform tools.

Project and contracting process: Mercor. Applications continue on the provider's website.