After completing studies in Information Systems, David joined Doubleclick as a Technical Account Manager in early 2004. Following Google's acquisition of Doubleclick, he became a Senior Consultant and then in recognition of his expertise and results in his role, he was promoted to Google's Country Manager (Media and Platform Solutions) for Greater China in 2009. During his tenure with Google, he launched the first real-time ad bidding marketplace in China and established four new businesses, launched six new products and grew team size by 350%.
In 2014, David joined Vivaki, the Ad tech company owned by Publicis Groupe. As Managing Director for China, David oversaw the launch of products, technology platforms and partnerships.
In 2017, David stepped into the entrepreneurial field as the CEO of MaxBit, which is part of the Siu Shuo Technology portfolio. He is responsible for leading the company's strategic transformation to focus on new media, connect new screens, and create new marketing scenarios.