David's research focus is in key software, services and management technology market segments including media, content management, and collaborative platforms. Since joining Longhaus in early 2007 he has provided support for the company's directional research agenda in the form of data collection and initial analysis, and is a key contributor to Longhaus' ongoing open source market analysis. David is also the Longhaus analyst and primary technical architect responsible for the development of both the Australian Tech Index and the Longhaus Consolidation and Outsourcing Readiness (CORE) Assessment research engines.

Prior to Longhaus, David was a researcher in the Microsoft eResearch Lab (MQUTer) at Queensland University of Technology. His research covered information retrieval, collaborative platforms and application development including the publication of five research papers in international journals and conferences. David is also a member of the Association for Computing Machinery (ACM). He holds a Masters Degree in Information Technology from QUT, and a Masters Degree in Information Systems from Griffith University. He was awarded a Bachelor of Arts from Communication University of China.

After four years with Longhaus in Australia, David (Lei) is now based in Xi'An, China and leads Longhaus' north Asia research.