Data Labeling Specialist
Mercor
Job Overview
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Job Description
About Mercor
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.
Position Summary
The Data Labeling Specialist will evaluate Large Language Model (LLM)-generated responses for accuracy and effectiveness in answering user queries. This contract role, available full-time or part-time, is compensated at $41/hour and is geographically restricted to Israel and the USA.
Role Responsibilities
- 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.
Qualifications
Must-Have
- Bachelor’s degree
- Native speaker or ILR 5/primary fluency (C2 on the CEFR scale) in Hebrew
- Significant experience using large language models (LLMs)
- Excellent writing skills
- Strong attention to detail
- Adaptable across topics, domains, and customer requirements
- Background in domains requiring structured analytical thinking
- Excellent college-level mathematics skills
Preferred
- 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
Compensation & Legal
- Hourly contractor
- Paid weekly via Stripe Connect
Application Process (Takes 20–30 mins to complete)
- Upload resume
- AI interview based on your resume
- Submit form
Resources & Support
For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome/welcome
For any help or support, reach out to: support@mercor.com
PS: 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
- Analytical thinking
- Writing skills
- Attention to detail
- Hebrew fluency
- Reasoning assessment
- Content quality
- Guideline adherence
How to Get Hired at Mercor
- Research Mercor's mission: Study their investor backing and focus on connecting elite talent with leading AI labs.
- Tailor your resume: Highlight significant experience with LLMs, data annotation, and strong analytical thinking skills.
- Prepare for the AI interview: Practice articulating your experience in evaluating model responses and demonstrating critical thinking.
- Emphasize language fluency: Showcase native Hebrew proficiency (C2 CEFR) and excellent writing abilities.
- Demonstrate attention to detail: Provide concrete examples of meticulous work in previous roles relevant to data quality.
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