AI Model Evaluator

About The Job

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.

As an AI Model Evaluator at Mercor, you will play a critical role in refining the capabilities of large language models.

Role Responsibilities

• Evaluate LLM-generated responses on their ability to effectively answer 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.

Qualifications

Must-Have

• Bachelor’s degree
• Native speaker or ILR 5/primary fluency (C2 on the CEFR scale) in Korean
• Significant experience using large language models (LLMs)
• Excellent writing skills
• Strong attention to detail
• Adaptable and comfortable moving across topics, domains, and customer requirements
• Background or experience in domains requiring structured analytical thinking (e.g., research, policy, analytics, linguistics, engineering)
• 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

Application Process

The application process takes approximately 20–30 minutes to complete:

• Upload resume
• AI interview based on your resume
• Submit form

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

Key Skills/Competency

• LLM Evaluation
• Fact-Checking
• Data Annotation
• Natural Language Processing (NLP)
• Analytical Thinking
• Korean Fluency (C2/Native)
• Content Quality Assessment
• AI Model Refinement
• Linguistic Analysis
• Mathematics Skills