Spanish Sonic Audit Specialist - Remote
Listing checked September 18, 2026 · pay as published by Mercor
Overview
Mercor seeks Spanish speakers from Spain to audit AI training data, not to create it. The work centers on two Amazon Sonic collections: Multilingual Transcription Audit and Forced Alignment Audit. In the transcription audit, you compare recorded human or agent speech with an annotator's transcript, apply set error codes, assign pass or fail, and write a short English rationale. The alignment audit has you check word-level audio segments, verify start and end timestamps and reference text, then repair boundaries by splitting, merging, adding, or removing segments. Each task runs at 5.00 audit hours, and a calibration phase comes before production.
What You'll Do9
- 1Listen to human or agent speech recordings and compare them against annotator transcripts.
- 2Apply the fixed error code set to each judgment and assign a pass or fail verdict.
- 3Write a concise rationale in English that explains the verdict.
- 4Review word-level audio segments for Forced Alignment Audit tasks.
- 5Verify that each segment's start and end timestamps match the spoken word and that the reference transcription matches the spoken form.
- 6Correct machine mistakes by adjusting a boundary, splitting a segment, merging two segments, adding a missing segment, or deleting a segment that holds no word.
- 7Tag every applicable error code when you find a problem, not just the first one.
- 8Call out critical errors first so readers see the failure reason at once.
- 9Complete the calibration phase before production work starts.
Requirements6
- 1Native or near-native command of Spanish as spoken in Spain. You either grew up in a region where that variety dominates or you have five or more years of residence in one.
- 2Strong English reading and writing. All conventions, error codes, and audit rationales use English.
- 3Ability to apply a written rubric across hundreds of judgments without drifting from the standard.
- 4Prior transcription, subtitling, localization, linguistic annotation, or QA work is a strong signal.
- 5Sharp listening skills: tell similar sounds apart, find word boundaries in continuous speech, and separate true acoustic ambiguity from a clear annotator mistake.
- 6Helpful but not required: AI data annotation or model evaluation experience, a phonetics or linguistics background, and audio editing or waveform tool use.
Who Should Apply
Candidates who fit best speak Spanish from Spain at a native or near-native level, read and write English well, and enjoy applying a fixed rubric to hundreds of audio judgments. Prior work in transcription, subtitling, localization, linguistic annotation, or QA gives you a clear edge. This role suits people who treat listening as precision work and who can explain each verdict in English with the right error codes and a short rationale. The role is less suitable for anyone who prefers fast volume-based transcription or who relies on personal instinct instead of a written standard. Common reasons applicants score low include speaking a Latin American Spanish variety rather than Spain Spanish, writing weak English rationales, or tagging only one error code when several apply.
Salary Insight
Pay is $39.50 per hour for this remote engagement. That rate sits above many general transcription or annotation roles and fits the audit demands: Spain Spanish fluency, English rationale writing, and forced alignment review. The source gives no details on benefits, overtime, or contract length.
Pay and demand for Language & Linguistics roles
AggregatedTypical pay
$30/hour
This role
$40/hr
Most Language & Linguistics roles pay $22–$48 per hour. This role's pay falls inside that range.
Based on 257 similar roles that publish pay · 101 publish only a top rate; those count at the rate they gave
Rates shown per hour. Yearly and monthly pay converted; one-time fees and non-USD pay are not included.
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Compensation
$39.50/hr
Required Skills
Application Tip
Name your Spanish variety in the first line of your application (Spain Spanish), state any years of residence in Spain, and list transcription, subtitling, localization, annotation, or QA projects with dates. Add one short example where you applied a rubric, tagged every error code that fit, and wrote an English rationale for a pass or fail call.
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