Data Annotation Analyst

About the Company

Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark
, General Catalyst
, Peter Thiel
, Adam D'Angelo
, Larry Summers
, and Jack Dorsey
.

AI Model Evaluator

Full-time or Part-time Contract Work

$40/hour

Geography restricted to Europe, USA

• Evaluate LLM-generated responses for effectiveness in answering user queries.
• Conduct fact-checking using trusted public sources and external tools.
• Generate high-quality human evaluation data by annotating response strengths, areas for improvement, and factual inaccuracies.
• Assess reasoning quality, clarity, tone, and completeness of responses.
• Ensure model responses align with expected conversational behavior and system guidelines.
• Apply consistent annotations by following clear taxonomies, benchmarks, and detailed evaluation guidelines.

Must-Have

• Bachelor’s degree
• Native speaker or ILR 5/primary fluency (C2 on the CEFR scale) in German
• Significant experience using large language models (LLMs)
• Excellent writing skills
• Strong attention to detail
• Adaptable and comfortable moving across topics
• Background or experience in domains requiring structured analytical thinking
• Excellent college-level mathematics skills

Preferred

• Prior experience with RLHF, model evaluation, or data annotation work
• Experience writing or editing high-quality written content
• Experience comparing multiple outputs and making fine-grained qualitative judgments
• Familiarity with evaluation rubrics, benchmarks, or quality scoring systems

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• Submit form

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PS:
Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.