· Department Chair, Biomedical Engineering, University of California, Irvine2010–2019
· Consultant, Safeguide Consulting2007–
· Professor, University of California, Irvine2002–
· Professor of International Business and Entrepreneurship, Handong Global University2001–
· Senior Technology Advisor, National Cancer Institute2001–2001
· Program Manager, Defense Advanced Research Projects Agency (DARPA)1999–2001
· Group Leader, Senior Research Staff, Lawrence Livermore National Laboratory1992–1999
· Emancro
· Ph.D. Candidate, University of California, Berkeley
· Undergraduate Student, University of California, Berkeley