Hoi leads Android Machine Learning Developer Relations at Google. He is also a sector executive for the Institution of Engineering and Technology (IET). He was part of the launch team for Wear OS by Google (previously, Android Wear), Chromecast, Google Glass Enterprise Edition, and the Google Beacon Platform.

Prior to Google, he founded Exahive to disrupt the mobile commerce marketplace. Hoi was an Equity Research VP at Deutsche Bank and Citigroup covering technology companies. Before banking, he was a product manager / application architect at Accenture. Hoi holds a Master and Bachelor degree in Space Engineering from the University of Cambridge.