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: 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 .

Qualifications





Must-Have

- 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

- Master's or PhD .

Compensation & Legal

- Hourly contractor

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:
- For any help or support, reach out to:

PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.

#hiringmercor

📌 Stem Researcher - Ai Trainer (Madrid)
🏢 Mercor
📍 Madrid