2021 Full Professor, University of Hawaiʻi at Mānoa
2016-2021 Associate Professor, University of Hawaiʻi at Mānoa (with tenure)
2014-2016 Assistant Professor, University of Hawaiʻi at Mānoa
2012-2014 Associate Professor, University of Texas at El Paso (with tenure)
2008-2012 Assistant Professor, University of Texas at El Paso
2007-2008 Postdoctoral Researcher, California Inst. of Technology, NASA JPL
2005-2007 Postdoctoral Researcher, UC San Diego, Scripps Inst. Oceanography
1999-2005 Graduate Research Asst., UC San Diego, Scripps Inst. Oceanography
1999 Undergraduate Research Asst., NASA Ames, NASA Astrobiology Academy
1998 Undergraduate Research Asst., Stanford University (SLAC)
1997-1999 Undergraduate Research Asst., NASA Space Grant, Lowell Observatory