AI English Linguistic Expert: Evaluation & Data Annotation

Mercor; United States; Remote; USD 57,000 - 81,000; Full time

Job summary

Mercor is seeking experienced English Linguistic Experts to support an AI research project in the United States. You will evaluate how an LLM performs on English-language tasks and curate high-quality English linguistic data to train the model’s understanding and generation.

You will edit and refine content to meet linguistic and cultural standards, annotate texts for linguistic features, and collaborate with AI researchers to improve model performance.

Qualifications

• Must be a native or near-native English speaker with strong grammar and stylistics.
• Experience in translation, editing, linguistic annotation or NLP data work in English is required.
• Excellent eye for subtle errors and unnatural phrasing; ability to edit for clarity and consistency.

Responsibilities

• Evaluate quality and accuracy of LLM-generated English text across use cases (translation, summarization, dialogue, grammar correction).
• Edit, refine, or rewrite English content to meet linguistic and cultural standards.
• Annotate English 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 model training.

Skills

Native English

Editing & rewriting

Linguistic annotation

NLP data work

Attention to detail

Remote collaboration

Job description

Mercor is seeking experienced English Linguistic Experts to support an AI research project in the United States. You will evaluate how an LLM performs on English-language tasks and curate high-quality English linguistic data to train the model’s understanding and generation.

You will edit and refine content to meet linguistic and cultural standards, annotate texts for linguistic features, and collaborate with AI researchers to improve model performance.