Data Science Evaluation Architect & AI Trainer

Obsidian; Philadelphia (Philadelphia County); On-site; USD 120,000 - 190,000; Full time

Job summary

Mercor is partnering with a leading AI research organization to engage experienced data scientists for a project focused on evaluating how well AI systems perform real-world data science work. You will define what excellent work looks like, designing task-specific grading criteria and providing rigorous written justifications for scores.

The ideal candidate has 5+ years in industry data science, with strong experiment design, SQL/Python analysis, and the ability to communicate findings to

Qualifications

• 5+ years of professional data science experience in industry.
• Experience in business operations, product, or growth data science at top-tier tech companies.
• Deep fluency in experiment design and A/B testing, metric definition, SQL/Python analysis, and communicating findings to executives.
• Exceptionally strong written communication.
• Detail-oriented and comfortable with peer calibration.
• Prior AI training/evaluation experience is a strong plus.

Responsibilities

• Design precise, task-specific grading criteria for real-world data science deliverables.
• Score AI-generated and human work samples against criteria with detailed written justifications.
• Apply consistent, evidence-based judgment so scores are reproducible and defensible.
• Incorporate structured feedback from senior reviewers and iterate quickly.

Skills

Data science experience

Experiment design

A/B testing

SQL

Python

Written communication

Tools

SQL

Python

Job description

Mercor is partnering with a leading AI research organization to engage experienced data scientists for a project focused on evaluating how well AI systems perform real-world data science work. You will define what excellent work looks like, designing task-specific grading criteria and providing rigorous written justifications for scores.

The ideal candidate has 5+ years in industry data science, with strong experiment design, SQL/Python analysis, and the ability to communicate findings to