• Build infrastructure and platform to support large scale distributed training for 3D foundation models, recommendation models, etc

• Build inference engine and backend to optimize Recsys inference at Roblox

1. Works at Messenger, Search and Facebook Watch.

2. Built a cross-platform(iOS & Andriod) mobile framework for efficient and realtime data syncing

3. Worked on first version of Messenger Lite

4. Worked on various products related to search on Facebook and Workplace

5. Worked on various products to personalize video feed through understanding user's interests

1. Responsible for search ranking optimization on Amazon Local Website by utilizing customer

behavior.

2. Designed and implemented a new service to compute and index deal's performance scores

through processing data obtained from data warehouse.

3. Created a new ranking function to incorporate deal's performance scores.

4. Launched the project. Preliminary result of A/B test showed new ranking strategy converted more clicks into purchases and created more revenue.