Data Annotation Specialist (Freelance / Remote)
Labeled and annotated image, text, audio, and video datasets to support machine learning and AI training. Performed object detection, segmentation, classification, and tagging while reviewing outputs to ensure compliance with annotation guidelines. Conducted data validation and correction to improve dataset consistency, reliability, and overall quality. • Object detection with bounding boxes • Segmentation with polygons/masks • Text tagging including NER • QA review, validation, and corrections