STEM Researcher - Fully Remote | Up to $50/hr
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: STEM Expert, Spanish (Spain) - AI Training
Type:
Contract
Compensation:
$50/hour
Location:
Remote
Duration:
Oct 23 to Nov 19
Commitment:
21 hours/week
Role Responsibilities
Develop workspaces and files to train AI agents on realistic professional tasks.
Write prompts and create grading rubrics based on real STEM work in Spain.
Evaluate the accuracy and depth of AI-generated content to strengthen reasoning and rigor in model outputs.
Provide clear,



structured feedback to AI research teams to improve training data quality and downstream performance.
Work independently and asynchronously to meet deadlines while improving AI model performance.
Must-Have Qualifications
5+ years as a scientist or engineer in research or industry.
Native or fluent in Spanish.
Degree from a top-20 university in Spain.
Comfortable with quantitative analysis, technical documentation, and data-heavy problem solving.
Preferred Qualifications
Master's or PhD.
Hourly contractor.
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📌 Stem Researcher (Madrid)
🏢 Mercor
📍 Madrid