Welo Global
Data Annotation Specialist - South Bay, CA (On Site)
Sunnyvale, CA +1 · On-site · Full-time · Posted Sep 22, 2025
- Location
- Sunnyvale, CA
Menlo Park, CA - Experience
- 3–5 years of professional linguistics experience is listed as preferred.
- Education
- University degree in linguistics, translation, or a related field is preferred.
- Visa sponsorship
- Must have valid U.S. work authorization; the employer does not sponsor visas.
About the job
Tests AI products, annotates and quality-checks natural-language data, and supports machine-learning model refinement through data analysis and reporting.
What you'll do
- Test AI products and provide feedback on functionality and user experience.
- Annotate natural-language datasets and perform quality assurance, identifying anomalies and discrepancies.
- Analyze data and report findings on data quality, model performance, and user feedback.
What they ask for
- Strong analytical skills to detect patterns and anomalies.
- Excellent communication and collaboration skills.
- Adaptability to changing priorities and project requirements.
- Valid U.S. work authorization; visa sponsorship is not available.
Nice to have
- University degree in linguistics, translation, or a related field.
- Professional linguistics experience.
AI focus
Tests AI products, annotates natural-language datasets, and helps refine machine-learning models.
Model-written summary · the original posting is authoritative