Remote Spanish Linguistic Specialist for AI & LLM Training

Mercor; Madrid; Presencial; EUR 45.000 - 65.000; Jornada completa

Descripción de la vacante

Mercor is seeking experienced Spanish Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. This role centers on evaluating how effectively a large language model (LLM) performs in Spanish-language tasks and on curating high-quality Spanish linguistic data to train and improve the model’s understanding and generation capabilities.

You will evaluate LLM-generated Spanish text across use cases, edit and annotate Spanish content, and provide

Formación

• Native or near-native fluency in Spanish.
• Experience in translation, editing, linguistic annotation, or NLP data work in Spanish.
• Strong understanding of linguistic nuances, regional variations, and context-appropriate usage.
• 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.

Responsabilidades

• Evaluate the quality and accuracy of LLM-generated Spanish text across use cases (e.g., translation, summarization, dialogue, 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, and collaborate with AI researchers to improve LLM performance.
• Provide detailed linguistic feedback and analysis to guide ongoing model training efforts.

Conocimientos

Spanish fluency

Linguistic annotation

NLP data work

Editing

Translation

Descripción del empleo

Mercor is seeking experienced Spanish Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. This role centers on evaluating how effectively a large language model (LLM) performs in Spanish-language tasks and on curating high-quality Spanish linguistic data to train and improve the model’s understanding and generation capabilities.

You will evaluate LLM-generated Spanish text across use cases, edit and annotate Spanish content, and provide