Ads Delivery & Targeting

• Standard (Age/Gender/Location/etc) targeting for SmartNews Ads

• Custom Audience redesign

• Infrastructure cost reduction (Reduced ads infra cost by ~40% in 1 year)

• Improve service quality and observability

Staff Software Engineer

08/2021 - 07/2022: Shanghai Office

07/2022 - 03/2023: Palo Alto Office

Infra:

• Global service load balancing: Build system to make sure all critical micro-service's traffic is properly routed to/from each data center in a safe and low latency manner, and traffic can be safely shifted to nearby data centers when one data center has problem.

• Facebook's common priority queue service (FOQS): Work on an extremely large scale and high-traffic low-latency priority queue system. The system is deployed in 13+ data centers around the world and handles 1 trillion jobs each day with P99 e2e latency of 7ms.

Product:

• Facebook's Ad Campaign Planner to help brand advertisers plan ad campaigns more efficiently (See press http://www.adweek.com/digital/campaign-planner-business-manager/).

• Network File System

• RPC, TCP.