1996-2001 Assistant Professor, University of California, Irvine 2001-2006 Associate Professor (with tenure), University of California, Irvine 2003-2006 Associate Professor, joint appointment in Biomedical Engineering 2006- Professor, University of California, Irvine 2006- Professor, joint appointment in Biomedical Engineering 2006-2011 Co-Director Growth Factors and Signaling Program, Chao Family Comprehensive Cancer Center 2011- Co-Director Oncoimaging and Biotechnology Program, Chao Family Comprehensive Cancer Center 2009- Chair, Dept. Molecular Biology & Biochemistry, UC Irvine 2009- Member of Leadership Council, Edwards Lifesciences Center for Advanced Cardiovascular Technology, UC Irvine 2013- Chair, HHT Foundation, Global Medical Research Advisory Board 2014- Interim Director, Edwards Lifesciences Center for Advanced Cardiovascular Technology