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Spanish Linguistic Expert - LLM - AI Trainer

Role overview

Qualifications

  • Native or near-native fluency in Spanish, with excellent command over grammar, syntax, and stylistics.
  • Professional experience in translation, editing, linguistic annotation, or NLP data work in Spanish.
  • Strong understanding of linguistic nuances, regional variations, and context-appropriate usage.
  • Excellent attention to detail and ability to spot subtle errors or unnatural phrasing.

Responsibilities

  • Evaluate the quality and accuracy of LLM-generated Spanish text across various use cases such as translation, summarization, dialogue, and grammar correction.
  • Edit, refine, or rewrite Spanish content to meet linguistic and cultural standards.
  • Annotate Spanish text for grammatical, syntactic, and semantic features.
  • Identify model errors and language gaps. Collaborate with AI researchers to improve LLM performance.

Key facts

  • Remote from: Spain
  • Part time
  • AI Trainer
  • Spanish

Hard skills

Other skills

  • Editing
  • Detail Oriented
  • Grammar
  • Communication
  • Collaboration

About the company

Mercor logo

Mercor

Job Boards & Talent Marketplaces

Our vast talent network trains frontier AI models in the same way teachers teach students: by sharing knowledge, experience, and context that can't be captured in code alone. Today, more than 30,000 experts in our network collectively earn over $2 million a day.

Company details

IndustryJob Boards & Talent Marketplaces
Company size51 - 200

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Job description

About the job

Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.

Position: Spanish Linguistic Expert
Type: Contract
Compensation: $50/hour
Location: Remote

Role Responsibilities

  • Evaluate the quality and accuracy of LLM-generated Spanish text across various use cases such as translation, summarization, dialogue, and grammar correction.
  • Edit, refine, or rewrite Spanish content to meet linguistic and cultural standards.
  • Annotate Spanish text for grammatical, syntactic, and semantic features.
  • Identify model errors and language gaps. Collaborate with AI researchers to improve LLM performance.
  • Provide detailed linguistic feedback and analysis to guide ongoing model training efforts.

Qualifications

Must-Have

  • Native or near-native fluency in Spanish, with excellent command over grammar, syntax, and stylistics.
  • Professional experience in translation, editing, linguistic annotation, or NLP data work in Spanish.
  • Strong understanding of linguistic nuances, regional variations, and context-appropriate usage.
  • Excellent attention to detail and ability to spot subtle errors or unnatural phrasing.
  • Clear communication skills and experience working in distributed, remote teams.

Preferred

  • Interest in AI and LLM-driven language technologies.

Application Process (Takes 20–30 mins to complete)

  • Upload resume
  • AI interview based on your resume
  • Submit form

Resources & Support

  • For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome
  • For any help or support, reach out to: support@mercor.com

PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.



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Marcus Rivera

Chief Revenue Officer

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