Corporate/M&A Lawyer (Spain)

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

We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.

Contract and Payment Terms

• You will be engaged as an independent contractor.
• This is a fully remote role that can be completed on your own schedule.
• Projects can be extended, shortened, or concluded early depending on needs and performance.
• Your work at Mercor will not involve access to confidential or proprietary information from any employer, client, or institution.
• Payments are weekly on Stripe or Wise based on services rendered.
• Please note: We are unable to support H1-B or STEM OPT candidates at this time.

About Mercor

Mercor partners with leading AI labs and enterprises to train frontier models using human expertise. You will work on projects that focus on training and enhancing AI systems. You will be paid competitively, collaborate with leading researchers, and help shape the next generation of AI systems in your area of expertise.