• Anti spam-and-abuse

• Anti account takeover

• Web crawling and detect malicious URL

• Major contributor of global benefits product for Canada, UK, France, and more. Domain owner to integrate Rippling with external global insurance integration partners. Automate electronic document exchange with carriers from scratch.

• Optimized architectural performance bottlenecks, targeting 10X speedup.

Worked at core ads product engineering team to provide in-depth personalized guidance to help advertisers create / optimize their ad campaigns.

• Partnered with PhD candidates and postdocs to optimize an iterative method called Louvain’s method. Reimplement the algorithm in C++11 from scratch. Achieved a speed of 720K edges / second by a single process on modern CPUs (Intel Xeon E5).