Remote Spanish-Speaking STEM Researcher for AI Training

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 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.