Spanish-Speaking Stem Researcher For Ai Training (Remote)

Mercor; Madrid; Remote; EUR 51,000 - 73,000; Part time

Job summary

Mercor is seeking a STEM Expert, Spanish (Spain) for AI Training. This contract, remote role pays $50/hour and requires a commitment of 21 hours per week.

The assignment runs from Oct 23 to Nov 19. You will develop workspaces and files to train AI agents on realistic professional tasks, write prompts and grading rubrics based on Spain’s STEM work, and evaluate AI outputs to strengthen reasoning and model performance.

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.

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.

Skills

Spanish fluency

Quantitative analysis

Technical documentation

Data-driven problem solving

Education

Top-20 Spanish university degree

Job description

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 .
• Hourly contractor

Application Process (Takes 20–30 mins to complete)

• Upload resume
• AI interview based on your resume

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