Copy Editor Experts (American English)

Role Overview

Mercor is seeking an experienced English Copy Editor to support high-quality written content across a range of AI training initiatives. This role is ideal for a detail-oriented language professional who can ensure clarity, consistency, grammatical precision, and stylistic excellence across complex written materials.

We are looking for someone who demonstrates exceptional command of English, strong editorial judgment, and a meticulous eye for detail. This role requires consistent engagement and reliability over time.

Key Responsibilities

• Edit and proofread written content for grammar, spelling, punctuation, syntax, and clarity
• Ensure consistency in tone, style, formatting, and terminology across documents
• Improve structure, readability, and logical flow without altering intended meaning
• Identify ambiguities, inconsistencies, and factual or structural issues
• Enforce style guide adherence and maintain high editorial standards
• Flag unclear instructions, weak reasoning, or editorial risks in source material
• Provide thoughtful feedback to improve overall content quality

Ideal Qualifications

• 5+ years of proven professional experience in copy editing, proofreading, journalism, publishing, technical editing, or a related field
• Exceptional written and grammatical command of English (native or near-native proficiency required)
• Demonstrated history of high-precision editorial work with minimal error rates
• Extremely high attention to detail and ability to catch subtle inconsistencies
• Strong familiarity with style guides (e.g., Chicago, AP, MLA, or equivalent)
• Ability to work independently while maintaining consistent quality standards
• Reliable availability and consistent engagement

More About the Opportunity

• Minimum commitment: 20 hours per week
• Ongoing, consistent engagement expected
• Work involves reviewing and refining high-volume written material

Application Process

• Submit your resume highlighting relevant editorial experience
• Complete the attached required interview and assessment
• We aim to follow up within a few days with next steps

About Mercor

Mercor is a talent marketplace that connects top experts with leading AI labs and research organizations.

Our investors include Benchmark, General Catalyst, Adam D’Angelo, and Jack Dorsey.

Thousands of professionals across law, research, engineering, design, and creative fields contribute to Mercor projects shaping the next generation of AI.

We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.

Contract and Payment Terms

• You will be engaged as an independent contractor.
• This is a fully remote role that can be completed on your own schedule.
• Projects can be extended, shortened, or concluded early depending on needs and performance.
• Your work at Mercor will not involve access to confidential or proprietary information from any employer, client, or institution.
• Payments are weekly on Stripe or Wise based on services rendered.
• Please note: We are unable to support H1-B or STEM OPT candidates at this time.

About Mercor

Mercor partners with leading AI labs and enterprises to train frontier models using human expertise. You will work on projects that focus on training and enhancing AI systems. You will be paid competitively, collaborate with leading researchers, and help shape the next generation of AI systems in your area of expertise.