English Language Specialist - Fully Remote

Mercor; Toronto; Remote; CAD 70,000 - 100,000; Full time

Job summary

Mercor is seeking experienced English Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. This fully remote role focuses on evaluating LLM performance in English tasks and curating high-quality linguistic data. You will edit, refine, and annotate English content; identify errors and language gaps; and provide detailed feedback to guide model training. Native or near-native fluency and strong linguistic judgment are essential.

Qualifications

• Native or near-native English with strong grammar, syntax, and vocabulary.
• Experience editing, proofreading, writing, or linguistic annotation.
• Ability to identify subtle grammatical errors and awkward phrasing.
• Understanding of regional variations and tone in English.
• Interest in AI/LLM language technologies preferred.
• Detail-oriented with strong written communication and analytical judgment.
• Ability to work independently in a distributed, remote environment.

Responsibilities

• Evaluate quality and accuracy of LLM-generated English text across use cases (summarization, dialogue, grammar correction, rewriting, and reasoning).
• Edit, refine, or rewrite English content to meet high linguistic, stylistic, and cultural standards.
• Annotate English text for grammatical, syntactic, semantic, and stylistic features.
• Identify model errors, inconsistencies, and language gaps, and provide feedback to improve LLM performance.
• Provide detailed linguistic feedback and analysis to guide ongoing model training efforts.

Skills

English fluency

Editing / proofreading

Linguistic annotation

NLP data work

Attention to detail

Written communication

Remote work ability

AI/LLM interest

Job description

Mercor is seeking experienced English 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 English-language tasks and on curating high-quality English linguistic data to train and improve the model’s understanding and generation capabilities.

Key Responsibilities:

• Evaluate the quality and accuracy of LLM-generated English text across various use cases (e.g., summarization, dialogue, grammar correction, rewriting, and reasoning).

• Edit, refine, or rewrite English content to meet high linguistic, stylistic, and cultural standards.

• Annotate English text for grammatical, syntactic, semantic, and stylistic features.

• Identify model errors, inconsistencies, and language gaps, and provide feedback to improve LLM performance.

• Provide detailed linguistic feedback and analysis to guide ongoing model training efforts.

You’re a strong fit if you have:

• Native or near-native fluency in English, with an excellent command of grammar, syntax, vocabulary, and stylistics.

• Professional experience in editing, proofreading, writing, linguistic annotation, language evaluation, or NLP data work in English.

• Strong understanding of linguistic nuances, regional variations, tone, and context-appropriate English usage.

• Excellent ability to identify subtle grammatical errors, awkward phrasing, ambiguity, and unnatural language.

• Interest in AI and LLM-driven language technologies is preferred but not required.

• Strong attention to detail, analytical judgment, and written communication skills.

• Ability to work independently in a distributed, remote environment.

Why Join

• Contribute to cutting-edge AI research in partnership with a leading research lab.

• Work on high-impact projects that directly support the development of advanced AI systems.

• Gain hands-on exposure to state-of-the-art AI research and development.

• Work fully remotely with flexible, asynchronous hours.

• Join a fast-moving project where your expertise and judgment can have a meaningful impact.