Language & Audio Expert

$35–50/hr

rate as listed

Workload: ~15h/week
Engagement: Project-based
Location: Worldwide
Field: Creative

Mercor keeps a standing pool of linguists, translators, voice actors, and audio professionals who grade and write training data for frontier AI models. Joining is a background check plus a short AI interview, and project invitations arrive later when a client needs your language or specialty.

What the work involves

This is a pool listing, not a single opening. Once you are verified, Mercor invites you to specific project listings when a research client needs your language or your audio specialty. The work itself tends to fall into three shapes: writing prompts and reference answers in your language with the register, idiom, and cultural context a native reader would expect; grading model output on whether a translation preserves meaning and tone, whether grammar is idiomatic rather than merely correct, and whether register fits speaker and setting; and judging voice, music, and sound deliverables on whether they are clean, natural, and usable, with a precise account of what is wrong when they are not.

Most of the value you add is written reasoning. A score on its own is near useless to a research team. The annotation that says why a phrase reads as machine-translated, or which syllable the synthesized voice clips, is what the client is buying.

Languages and specialties covered

The pool spans languages including Spanish, Arabic, English, Hindi, French, Portuguese, Italian, Chinese, Russian, Japanese, Korean, Polish, Tamil, Telugu, Kannada, Malayalam, Marathi, Assamese, Punjabi, Gujarati, Thai, Dutch, and Finnish. It also covers translation and interpretation, voice acting, and music, audio engineering, and sound design.

What the platform screens for: native or professional fluency in at least one language, or professional experience in translation, voice, music, or audio production; clear written communication; and comfort working from ambiguous instructions, including the willingness to flag them rather than guess silently.

Logistics

Remote and asynchronous. You confirm where you work from at application.
Pay band: $35\u201350/hr, set per project by scope, language, and depth.
Application is a resume, a location confirmation, and roughly a 20 minute AI interview.
This listing issues no accept or reject decision. A match may come within a week or take several months, depending on what clients are running. Completing the domain expert interview and joining every network you qualify for improves matching odds, and you sign up only once.

What they look for

Native or professional fluency in at least one of the listed languages, or professional experience in translation, voice, music, or audio production
Ability to explain linguistic or audio judgments in clear written English
Working command of register, idiom, and regional variation in your language
Critical listening for voice, music, and sound quality — artefacts, prosody, mix problems
Comfort working from ambiguous annotation guidelines and flagging gaps rather than guessing silently
Reliable quiet workspace and headphones for audio tasks

Included with this listing

Interview prep — 10 questions

Matched to what this platform's screening actually measures. Answer each out loud in 60–90 seconds: claim → concrete example → implication.

What it tests: Whether your fluency claim is specific enough to route you to the right project listing, since the pool covers many languages at different demand levels.
A strong answer: Name each language, state native, professional, or working level, and anchor it in something checkable: where you grew up, where you were educated, certification, or years of paid work in that language.
Where people lose it: Claiming broad multilingual ability without saying which language you could write a native-sounding reference answer in; vague breadth costs you the match more often than narrow depth does.

Summary, eligibility guidance and screening preparation are prepared by Sidequest from the platform's posting. Check the source listing before applying.

What you'll need

Native or professional fluency in at least one of the listed languages, or professional experience in translation, voice, music, or audio production

Ability to explain linguistic or audio judgments in clear written English

Working command of register, idiom, and regional variation in your language