Built AI Metadata and data flow lineage across 15+ ML frameworks to protect user data privacy

Created ML emulation system for over 30 ML workflows

Achieved a 10% ranking performance improvement on local set search through machine learning optimization.

Scaled a sharded SQL database 10x to meet increasing advertiser user demand and delivered a 100x performance improvement on the advertiser task engine.

Created a PHP code vulnerability detector adopted company-wide by all security teams to improve application security.

Developed security system, security operation system, PHP web framework