Spanish Litigation AI Evaluation Lawyer

About OpenTrain

OpenTrain AI is the #1 platform for finding and building careers in AI training and data labeling. We recruit contributors for specialized projects where human expertise helps improve the quality, accuracy, and usefulness of modern AI systems.

• Remote contract work with OpenTrain AI
• Flexible part-time opportunity
• Create a free OpenTrain account and apply in minutes

About AI Evaluation Work

AI evaluation is the human side of building artificial intelligence. Expert reviewers assess model responses, compare alternative outputs, and provide structured feedback that helps improve how AI systems answer real-world questions.

• Work directly with cutting-edge language models
• Apply professional judgment to evaluate accuracy and quality
• Help shape how AI systems respond to legal questions

The Role

OpenTrain AI is recruiting a Spanish Litigation AI Evaluation Lawyer to benchmark how well AI systems answer real questions of Spanish law. You will run prompts through two AI platforms, compare the resulting outputs, score each response against a standardized rubric, and provide concise written feedback.

The role is remote and eligible in Spain. It involves an initial commitment of approximately 10 hours, with strong potential for more. The listed time requirement is 20+ hours per week.

• Contractor position
• Part-time work
• Remote from Spain
• Initial commitment of approximately 10 hours
• Strong potential for additional work

What You'll Do

You will independently assess AI-generated legal responses using the evaluation framework provided by OpenTrain AI. Your reviews should be precise, consistent, and grounded in Spanish litigation and procedural law.

• Run the same set of prompts across two AI language-model platforms
• Compare both platforms' outputs side by side
• Score each response against a standardized rubric
• Submit concise written feedback for every evaluation
• Complete evaluations independently and to deadlines

Requirements

This role requires professional legal experience and current qualification to practise in Spain. You should be comfortable evaluating nuanced legal answers in Spanish and communicating your reasoning precisely in writing.

• Qualified to practise in Spain (colegiado/a)
• At least 2 years of law-firm experience in litigation, disputes, or contentious practice
• Three or more years of relevant experience preferred
• Strong command of Spanish litigation and procedural law
• Native or fluent Spanish
• Precise written communication
• Ability to evaluate AI outputs independently using a rubric
• Ability to work to deadlines

Pay and Availability

This role pays $140–$150 per hour. The structured project details list a time requirement of 20+ hours per week, while the role description specifies an initial commitment of approximately 10 hours and strong potential for more.

• Pay: $140–$150 per hour
• Location: Spain
• Work arrangement: Remote
• Engagement: Contractor and part-time

Why Your Expertise Matters

Every major AI system depends on examples prepared and reviewed by people. By applying your litigation expertise to model evaluation, you can help improve the accuracy and reliability of AI tools while participating in a rapidly growing field of technology work.

• Use your Spanish legal expertise in an emerging AI field
• Work remotely with flexible part-time scheduling
• Contribute professional feedback that influences AI development