Mercor
Marketplace connecting AI labs with expert human trainers and evaluators.
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Mathematics Domain Expert
Senior mathematicians (PhD) review AI reasoning, write reference proofs and design research-level benchmarks. US only, $90–$140/h.
Chemistry Domain Expert
Senior chemists (PhD) review AI reasoning, write reference solutions and design research-level benchmarks. US only, $90–$140/h.
Physics Domain Expert
Senior physicists (PhD) review AI reasoning, write reference solutions and design research-level benchmarks. US only, $90–$140/h.
AI Chat Generalist
Evaluate AI assistants on realistic everyday tasks over multi-turn chats. No minimum experience, ~10 h/week, $30/h.
Senior Software Engineer, Backend (Node.js, TypeScript, Rust)
Build high-scale backend services in Node.js, TypeScript and Rust. US-only, full-time W-2 employment through Cincinnatus LLC; 40 hours/week.
Senior Software Engineering Experts
Senior software engineers from top tech, quant or finance firms design tasks and evaluate AI coding agents. $120–$180/hr, remote (US, UK, CA, AU, NZ).
Senior Data Scientist and Data Engineering Experts
Senior data scientists and data engineers from top tech, quant or finance firms train and evaluate frontier AI models. $120–$180/hr, remote (US, UK, CA, AU, NZ).
English Linguistic Experts
Mercor seeks native English speakers to evaluate and improve AI-generated English text. Remote, flexible contract at $50/hour.
Portuguese Linguistic Experts
Mercor seeks native Portuguese speakers to evaluate and improve AI-generated Portuguese text. Remote, flexible contract at $50/hour.
Spanish Linguistic Experts
Mercor seeks native Spanish speakers to evaluate and improve AI-generated Spanish text. Remote, flexible contract at $50/hour.
French Linguistic Experts
Mercor seeks native French speakers to evaluate and improve AI-generated French text. Remote, flexible contract at $50/hour.
Arabic Linguistic Experts
Mercor seeks native Arabic speakers to evaluate and improve AI-generated Arabic text. Remote, flexible contract at $50/hour.
Hindi Linguistic Experts
Mercor seeks native Hindi speakers to evaluate and improve AI-generated Hindi text. Remote, flexible contract at $30/hour.
Dermatologist
Mercor seeks board-certified US dermatologists to review patient charts and evaluate AI answers in dermatology. Remote, flexible part-time contract at $275/hour.
Psychiatrist
Mercor seeks board-certified US psychiatrists to review patient charts and evaluate AI answers in psychiatry. Remote, flexible part-time contract at $150/hour.
Geriatrician
Mercor seeks board-certified US geriatricians to review patient charts and evaluate AI answers in geriatric medicine. Remote, flexible part-time contract at $150/hour.
Radiologist
Mercor seeks board-certified US radiologists to review patient charts and evaluate AI answers in radiology. Remote, flexible part-time contract at $350/hour.
Analytical Chemist
Mercor is hiring analytical chemists to red-team frontier AI models on chemical safety. $65–$75 per task, remote contract.
STEM Expert, German (Germany) - AI Training
Mercor is hiring German-speaking scientists and engineers to train and evaluate AI agents. $50/hr, remote, about 21 hrs/week, hourly contractor.
Consulting Expert, German (Germany) - AI Training
Mercor is hiring German-speaking management and strategy consultants to train and evaluate AI agents. $65/hr, remote, about 21 hrs/week.
Finance Expert, German (Germany) - AI Training
Mercor is hiring German-speaking finance professionals to train and evaluate AI agents. $75/hr, remote, about 21 hrs/week, hourly contractor.
Program Lead
Mercor is hiring US-based Program Leads to manage AI training data expert teams. $45–$70/hr, full-time W-2 via Cincinnatus LLC, 40 hrs/week.
Legal Expert, German (Germany) - AI Training
Mercor is hiring German-speaking Volljuristen to train and evaluate AI agents. $95/hr, remote, about 21 hrs/week, hourly contractor.
Human Resources Expert, Spanish (Spain) - AI Training
Mercor is hiring Spanish-speaking HR professionals to train and evaluate AI agents. $60/hr, remote, about 21 hrs/week, hourly contractor.
Medical Expert, Spanish (Spain) - AI Training
Mercor is hiring Spanish-speaking licensed physicians to train and evaluate AI agents. $120/hr, remote, about 21 hrs/week, hourly contractor.
Medical Expert, German (Germany) - AI Training
Mercor is hiring German-speaking licensed physicians to train and evaluate AI agents. $120/hr, remote, about 21 hrs/week, hourly contractor.
Energetic Materials Expert for Redteaming
Evaluate AI safety in energetic materials through expert judgments and clear written rationales. Remote contract role paying $65–$75 per task.
General Physician
Mercor seeks practicing US-licensed MDs and DOs to evaluate clinical AI. $150/hr, six weeks, 20+ hrs/week; residency completion required.
Molecular Biology Experts - US
Join a leading AI lab as a Molecular Biology SME. W-2 role for US-based PhDs designing DNA/RNA constructs and writing evaluation rubrics. $70–$105/hr.
News Analysts, Reporters, and Journalists (US based)
Evaluate AI-generated news content and workflows using your reporting, news analysis, and editorial judgment expertise across print and broadcast media.
General Application
Apply once and get matched to all Mercor roles that fit your expertise — no need to apply to each listing separately.
Generalist (Macbook User)
Research-focused generalist role for Macbook (M-series) owners. $50–$60/hr, remote, 10–20 hrs/week with a leading AI lab.
Mercor — General AI Trainer
Join Mercor's talent network and get matched to a wide range of AI training and evaluation projects. Remote, flexible.