Gemini: Advertiser self-serve marketplace for mobile ads that distributes ads across native ads and search channels. Top-priority start-up mode project.

o Tech Lead for internal reporting, architecture and data model design.

o Designed configuration-driven ETL framework that auto-generates pipelines.

o Complex business features such as live advertisers/keywords, budget, demand versus supply.

Digits: A platform that reports Yahoo!’s audience traffic metrics at different grains.

o Design/Develop the reporting platform for metrics (pageviews, clicks, unique cookies) for different periods, levels (property/page/link), and groups (business family/locale/custom groups).

o Convert complex requirements (unique users, user retention, etc) into algorithms in big data technologies.

o Won best poster (1st-author) at Y! Tech Pulse 2013 (Digits user retention with sketch algorithms)

Segments Manager: A highly scalable platform that allows business partners to create segments, analyze, compare and target customers based on their past behaviors.

o The 1st project at Yahoo that applies hadoop stack technologies.

Design and develop cutting edge email software solutions for companies with a large customer database to send their emails on premise.