Payroll Specialist – Madrid (Hr & Compliance)

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: Human Resources Expert, Spanish (Spain) - AI Training
Type: Contract
Compensation: $60/hour
Location: Remote
Duration: Oct 23 to Nov 19
Commitment: 21 hours/week

• Train and evaluate AI agents on realistic professional tasks in Human Resources .
• Build workspaces and files to simulate real HR environments.
• Write prompts and create grading rubrics based on HR practices in Spain .
• Collaborate with AI research teams to improve task accuracy and relevance.
• Work independently and asynchronously to meet project deadlines.

• 5+ years in HR (business partnering, employee relations, compensation, or talent).
• Native or fluent in Spanish .
• Degree from a top-20 university in Spain .
• Knowledge of the Estatuto de los Trabajadores , collective agreements, Social Security, and Spanish payroll.