Official role description

Mercor is partnering with a leading legal AI company to benchmark how well AI systems answer real questions of Spanish law. We are hiring experienced corporate/M&A; lawyers to serve as expert reviewers — running the same prompts through two AI platforms, comparing the answers, and scoring them against a standardized rubric. — What you'll do
- Run the same set of prompts across two AI (LLM) platforms
- Compare the outputs from both platforms side by side
- Score each response against a standardized rubric we provide
- Submit concise written feedback for every evaluation — Requirements
- Primarily law-firm experience — at least 2 years (3+ preferred) at a law firm in corporate/M&A; or transactional practice.



If you are currently in-house, that is fine only if you moved in-house within the last 2 years and your prior experience was at a law firm.
- Qualified to practise in Spain, with a strong command of Spanish corporate and commercial law
- Native or fluent Spanish, with precise written communication
- Able to work independently to a rubric and to deadlines — Logistics
- Initial commitment: ~10 hours, with strong potential for more
- Confidentiality: all work is covered by NDA

Relevant skills

AI evaluation

📌 Corporate/M&A Lawyer (Madrid)
🏢 HumaniTapp
📍 Madrid