Lead a muti-site team of 20 data scientists from Shanghai to Hangzhou, working on machine learning, data mining and large scale distributed computing to accomplish data-driven risk management. Build the next generation AI based decision-making engine for risk management. Shipped AI based technologies into different scenarios such as promotion abuse detection, account takeover prevention, card stolen prevention and merchant-side risks detection. Support Alibaba's internationalization strategy by supporting risk management of our oversea partner companies