Stem Researcher - Fully Remote | Up To $50/Hr

Mercor; Madrid; Remote; EUR 53,000 - 72,000; Part time

Job summary

Mercor seeks a STEM Researcher to train AI agents by developing tasks, prompts, and grading rubrics, working remotely from anywhere. The role emphasizes Spanish-language capability and a strong STEM background, with a commitment of 21 hours per week across a contract running from Oct 23 to Nov 19.

Candidates should have 5+ years in research or industry, fluency in Spanish, and a degree from a top-20 Spanish university, plus proficiency in quantitative analysis and technical writing to support

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 analysis

Education

Degree from top-20 university in Spain

Job description

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.