Associate Editor; Journal of Geophysical Research - Solid Earth, 2008 - present

Associate Chair; Earth Sciences, Dalhousie University, 2008 - present

Canada Research Chair in Geophysics & Petroleum Exploration; Earth Sciences, Dalhousie University, 2006 - present

Associate Professor; Earth Sciences, Dalhousie University, 2006 - present

Adjunct Research Scientist; LDEO of Columbia University 2006 - present

Doherty Associate Research Scientist; LDEO of Columbia University 2004 - 2006

Post Doctoral Research Scientist; LDEO of Columbia University 2002 - 2004

Visiting Fellow; Pacific Geoscience Centre, 2000 - 2002

Geophysicist; NIS-NAFTAGAS Petroleum Corporation, 1991 - 1993