Spanish-Legal AI Trainer (Remote, Part-Time)

Mercor; Madrid; Remote; EUR 34,000 - 48,000; Part time

Job summary

Mercor is seeking experienced lawyers fluent in Spanish to train and evaluate AI agents on realistic professional tasks. You will work in realistic digital workspaces with documents, spreadsheets, emails, chat, and industry tools to draft and review tasks for legal practice.

Responsibilities include building workspaces, writing realistic requests in Spanish, defining grading criteria, and reviewing AI-generated work for accuracy with local regulations in mind.

Qualifications

• Experience in legal practice
• Native or fluent in Spanish
• Bachelor's degree from a recognized institution in Spain
• Practicing in Spain, ideally a member of a Spanish bar association (colegiado) with deep knowledge of Spanish civil, commercial or employment law

Responsibilities

• Building workspaces: reviewing files, memos and records for a project or case
• Writing tasks: drafting realistic requests grounded in local practice, regulations and terminology
• Defining what good looks like: writing clear grading criteria and checking if an AI agent's work meets professional standards
• Reviewing AI work: checking an agent's step-by-step work, spotting mistakes and correcting them

Job description

Mercor is seeking experienced lawyers fluent in Spanish to train and evaluate AI agents on realistic professional tasks. You will work in realistic digital workspaces with documents, spreadsheets, emails, chat, and industry tools to draft and review tasks for legal practice.

Responsibilities include building workspaces, writing realistic requests in Spanish, defining grading criteria, and reviewing AI-generated work for accuracy with local regulations in mind.