Senior Text Annotation Specialist - LLM Training & Quality Assurance
A large-scale text annotation project supporting enterprise LLM development, involving classification, segmentation, and transcription tasks across 750,000+ text samples. Core responsibilities included multi-label categorization into 35 intent classes, semantic segmentation of legal and customer service documents, and transcription of handwritten feedback. Project quality was maintained through daily randomized QA checks on 10% of annotations, gold-standard dataset calibration targeting 98% accuracy, and weekly team calibration sessions. Delivered all milestones ahead of schedule with 96% inter-annotator agreement while adhering to GDPR privacy protocols.