Senior AI Data Trainer
Led a distributed annotation team for RLHF and instruction-tuning projects aimed at large language models. Designed annotation taxonomies and labeling guidelines for topics such as sentiment analysis and factuality. Collaborated with ML engineers to evaluate and iterate on model outputs for improved accuracy and lower error rates. • Oversaw 2M+ labeled examples for sentiment analysis and response quality scoring. • Developed a 40-page style guide for onboarding and training annotators. • Built QA workflows and calibration protocols, lowering error rates by 34%. • Maintained over 97% inter-annotator agreement throughout projects.