Welo Global
Project Perseus | Data Labeling Associate - Portuguese (Portugal) Speakers (Human-in-the-Loop AI)
California +9 · On-site · Full-time · Posted Apr 22, 2026
- Location
- California
Sunnyvale, CA
San Francisco, CA
Seattle, WA
Redmond, Washington
Burlingame, CA
New York City Metropolitan Area
Los Angeles, CA
Washington, D.C.
Boston, MA - Experience
- 1–2 years of professional writing experience; 2+ years of relevant experience in GenAI data-delivery safety.
- Education
- University degree (Bachelor’s or higher).
About the job
Evaluate AI model outputs and data, identify quality and safety issues, and help improve evaluation frameworks and standards.
What you'll do
- Review model behavior and data to identify patterns, edge cases, and failure modes.
- Apply and help refine guidelines and quality standards; document actionable findings.
- Communicate performance insights and participate in team discussions and stakeholder syncs.
What they ask for
- Native-level Portuguese (Portugal) proficiency and B2 or higher English.
- University degree (Bachelor’s or higher).
- 1–2 years of professional writing experience.
- 2+ years of relevant experience in GenAI safety considerations in data delivery.
Nice to have
- Experience in data quality, QA, annotation, or analysis.
Pay
USD 34–34 per-hour-wage
AI focus
Human-in-the-loop AI evaluation, including assessing model outputs and safety, identifying performance issues, and improving evaluation frameworks.
Model-written summary · the original posting is authoritative