We're Hiring: Expert Rater (Spanish) | Remote (Spain) | $19.55/hour

?
Join Welo Data and help improve the quality of AI-powered advertising systems
We're 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 You'll 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 integral team

📌 Expert Rater (Madrid)
🏢 Welo Data
📍 Madrid