AI Data Trainer / LLM Data Worker
Manually annotated and validated company-related data fields using open-source intelligence sources. Verified and corrected company attributes, filled missing data, and highlighted annotated values in structured spreadsheets. Ensured accuracy and consistency in text-heavy datasets while following strict manual verification procedures. • Cross-checked data against official registries, websites, and press sources • Annotated company names, jurisdictions, and business information in Excel • Used logical reasoning to identify discrepancies and validate entity information • Maintained high-quality annotation output with minimal errors