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Expert Rater (Spanish) | Remote (Spain) | 19.55hour

Welo Data


Job Location:

Madrid - Spain

Monthly Salary: Not provided by the employer
Posted: 23 July 2026 (30+ days ago)
Application Deadline: 20 October 2026
Vacancies: 1 Vacancy

Job Summary

Were Hiring: Expert Rater (Spanish) Remote (Spain) $19.55/hour

Join Welo Data and help improve the quality of AI-powered advertising systems!

Were looking for experienced Spanish-speaking Expert Raters based in Spain to support AI data quality by coaching raters reviewing annotations and ensuring high-quality evaluation standards.

Position Details
  • Job Title: Expert Rater
  • Language: Spanish
  • Location: Remote (Spain)
  • Employment Type: Freelance
  • Hourly Rate: $19.55/hour
  • Schedule: 30 hours/week (potential to increase to 40 hours/week)
  • Project Duration: 1 Month
  • Start Date: 27th July
  • Potential: Opportunity for full-time employment based on performance and project needs
What Youll Do
  • Support and mentor AI Raters to improve rating quality and consistency.
  • Review annotations and create high-quality gold-standard datasets.
  • Conduct Tier 2 quality reviews and identify improvement opportunities.
  • Analyze data trends and KPIs to support data-driven decisions.
  • Collaborate with clients and internal teams to meet quality expectations.
  • Prepare clear client communications feedback and documentation.
  • Participate in AI research and quality improvement initiatives.
Requirements
  • Native or fluent Spanish.
  • English proficiency (B2 or higher).
  • 1 year of rating annotation or AI evaluation experience.
  • Experience with data labeling content evaluation or quality assurance.
  • Intermediate knowledge of Google Workspace.
  • Strong analytical communication research and coaching skills.
  • Understanding of Spanish and U.S. cultural and societal norms is an advantage.
Bonus Qualifications
  • Background in Social Sciences Linguistics Psychology Education or Quality Assurance.
  • Experience mentoring teams or conducting quality reviews.
What We Offer

$19.55/hour
Fully Remote (Work from Anywhere in Spain)
Flexible Freelance Opportunity
Potential Full-Time Opportunity
Work on cutting-edge AI projects with a global team