Freelance Data Labeler / AI Trainer at Appen, Appen China, Telus International
As a freelance data labeler and AI trainer, I annotated and audited various data types for multiple AI/ML projects at Appen and Telus International. My tasks included classification, bounding box annotation, transcription, sentiment analysis, and entity recognition with high audit accuracy. I worked with modern annotation platforms and custom internal tools to ensure AI training dataset quality. • Labeled and reviewed text, images, audio, and video for classification, segmentation, and transcription tasks. • Conducted RLHF-style preference ranking, policy labeling, and safety assessments for LLMs and recommender systems. • Performed QA checks and peer review to maintain labeling standards and inter-annotator agreement. • Documented edge cases and suggested annotation guideline improvements to reduce ambiguity and errors.