Company: Obsidian
Location: London
Job Description:
Mercor is seeking experienced data scientists to define what excellent work looks like and to score AI-generated and human work samples accordingly. You will design task-specific grading criteria, provide rigorous written justifications for every score, and ensure our scoring remains reproducible and defensible.
Ideal candidates bring 5+ years in industry data science, strong experiment design and A/B testing skills, and the ability to clearly communicate findings to executive stakeholders.
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Posted: August 17th, 2026
