Hang Yu, Ph.D., currently serves as Principal AI/ML Engineer at the New Zealand Qualifications Authority since October 2025. Previously, Hang held the position of Senior Data Scientist at Spark New Zealand from July 2023 to October 2025, leading AI/ML R&D projects focused on LLM-based engines for call summarization and information retrieval. Prior roles include Senior Data Scientist at Pet Circle, responsible for ML/DL solutions, and Senior Data Scientist at Trade Me, where significant contributions included productionizing personalized search and recommender systems that enhanced search CTR and conversions. Hang's career began with roles as a Junior Data Scientist and Teaching Assistant while completing a Ph.D. in Engineering and Computer Science at Victoria University of Wellington, complemented by a Master's from The University of Manchester and a Bachelor's from Xi'an University of Posts and Telecommunications.
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