Ads Signal Product• Built web signal integration with partnership companies to drive significant high quality and resilience signal growth, by closely working with business developers and tech XFNs• Led the team build signal automation solutions, unblocked X% signal growth and Y% signal utilization impact on targeting, measurement, and optimization• Drove the signal quality work and built the evaluation system

AI (Speech/ Computer Vision): • Built high quality training and evaluation dataset for speech and CV models and benchmark model performance• Determined model development and optimization directions through deep dive user facing product analysis• Defined the AI to product measurement framework and A/B test executionAds Product: • Influenced new advertiser product directions through ads product deep dive analysis and opportunity sizing• Built framework to measure the 0 to 1 product successAds Ranking and Delivery:• Ads ranking and delivery model understanding and improvementMarketplace Ranking and Recommendation:• Led the marketplace quality work from ranking and recommendation system

eCommerce Marketplace: • Used data to generate product insights and defined the product success measurement• Closely worked with engineers to define and optimize the marketplace item ranking & recommendation algorithmMarketplace Product Ads:• Founding data scientist for Marketplace Product Ads• Owned the end-to-end Marketplace Product Ads analytics, A/B test, modeling, and measurement work

• Performed feature engineering and implemented regression models to predict users' LTV, and compared the performance of models• Analyzed and visualized user behaviors of mobile game in-app purchase• Generated customer-facing reports of data analysis and visualization