He has been working on search ranking related projects, especially listing classification design and development, in the Search Science Factors team since joined eBay in 2008. Prior to eBay, Ted worked as individual contributor for Yahoo! in its desktop search and toolbar teams. Before Yahoo!, Ted worked in many start-ups, including social search engine Spoke Software, web performance measurement and monitoring firm Keynote Systems. Ted holds a doctorate in physics from Northeastern University in Boston and a bachelor's in high energy physics from University of Science and Technology of China.