Mexican Spanish Linguistic Expert at Mercor

Mexican Spanish Linguistic Expert | $40/hr | Part Time | Remote

About the role

Evaluate and improve how a large language model (LLM) performs in Mexican Spanish, and curate high-quality Spanish linguistic data to support model training. The project is run in partnership with a leading research lab.

What the work involves

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

Who this is for

• Native or near-native fluency in Mexican Spanish, with strong command of grammar, syntax and stylistics.
• Professional experience in translation, editing, linguistic annotation, or NLP data work in Spanish.
• Strong understanding of Mexican Spanish nuances, regional variations, register and context-appropriate usage, including how it differs from other Latin American and Peninsular varieties.
• Professional fluency in English.
• Interest in AI and LLM-driven language technologies (preferred but not required).
• Excellent attention to detail and ability to spot subtle errors or unnatural phrasing.
• Clear communication skills and experience working in distributed, remote teams.

Pay and commitment

$40/hr, part time.

Location

Fully remote.