David previously served as a trade adviser to the US Government, representing the US at the WTO, WHO, WIPO, and UNCTAD, and in free trade agreement negotiations and WTO dispute resolution.

He has held senior roles including Partner at TLT LLP (UK), Yeutter Visiting Professor of International Trade Law at the University of Nebraska, and Executive Director of the Institute for International Trade at the University of Adelaide. He has delivered technical assistance and training to officials from over 100 countries and taught at institutions such as the WIPO Academy and the US Foreign Service Institute.