Hao Xiao is a Senior Data Scientist at Duolingo, where they have been contributing to data-driven projects since 2025. Previously, they held positions as a Data Scientist at QuantumBlack and a Data Science Consultant at McKinsey & Company. Hao also worked as a Senior Data Scientist at TikTok in 2024, and their earlier experience includes roles at TransUnion, Coinbase, and an internship as a Data Analyst at the China Sustainable Transportation Center. They obtained a Bachelor's degree in Urban Planning with a double major in Economics from Peking University and a Master’s degree in Analytics from Northwestern University.
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