Data Science Expert - Evaluation Specialist

mercor; Deutschland; Remote; EUR 147,000 - 209,000; Full time

Job summary

Mercor seeks a Data Science Expert for a contract, remote role. Design precise, task-specific grading criteria for real-world data science deliverables, including analyses, models, dashboards, and experiment readouts.

You will score AI-generated and human work against established criteria with detailed, well-reasoned written justifications, and ensure scores are reproducible and defensible. Collaborate with AI research teams to improve training data quality and downstream performance.

Qualifications

• 5+ years of professional data science experience in industry.
• Background in business operations, product, or growth data science at top-tier technology companies.
• Deep fluency in experiment design, A/B testing, metric definition, SQL/Python analysis, and communicating findings to executive stakeholders.
• Exceptionally strong written communication.
• Detail-oriented, consistent, and comfortable having your judgment reviewed and calibrated against peers.

Responsibilities

• Design precise, task-specific grading criteria for real-world data science deliverables, including analyses, models, dashboards, and experiment readouts.
• Score AI-generated and human work samples against established criteria with detailed, well-reasoned written justifications.
• Apply consistent, evidence-based judgment to ensure scores are reproducible and defensible.
• Incorporate structured feedback from senior reviewers and iterate quickly on your work.
• Collaborate with AI research teams to improve training data quality and downstream performance.

Skills

Experiment design

A/B testing

SQL

Python

Data storytelling

Job description

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 . Position: Data Science Expert Type: Contract Compensation: $120–$170/hour Location: Remote

Role Responsibilities

• Design precise, task-specific grading criteria for real-world data science deliverables, including analyses, models, dashboards, and experiment readouts.
• Score AI-generated and human work samples against established criteria with detailed, well-reasoned written justifications.
• Apply consistent, evidence-based judgment to ensure scores are reproducible and defensible.
• Incorporate structured feedback from senior reviewers and iterate quickly on your work.
• Collaborate with AI research teams to improve training data quality and downstream performance.

Qualifications Must-Have

• 5+ years of professional data science experience in industry.
• Background in business operations, product, or growth data science at top-tier technology companies.
• Deep fluency in experiment design, A/B testing , metric definition, SQL/Python analysis, and communicating findings to executive stakeholders.
• Exceptionally strong written communication.
• Detail-oriented, consistent, and comfortable having your judgment reviewed and calibrated against peers.

Preferred

• Prior experience with AI training , evaluation, or human-data projects.