Senior Data Annotation Specialist | DataBridge Solutions | Freelance
Led a multilingual NLP annotation effort for text classification with high quality targets. Ensured label consistency across distributed annotator teams using documented guidelines and structured feedback. Performed quality measurement and ambiguity resolution to maintain accuracy above 98% for large-scale deliverables. • Tracked project quality to reach a 99.1% quality score. • Developed and maintained detailed annotation guidelines and style guides. • Conducted inter-annotator agreement (Cohen's Kappa) analysis to resolve protocol ambiguities. • Onboarded new annotators, reducing ramp-up time by 30% through documentation and feedback.