2011 - 2012: Assistant Professor, University of Nottingham, Malaysia campus
2008 - 2010: Lecturer/Researcher, Royal Institute of Technology, Stockholm, Sweden
2007 - 2008: Research Scientist, GeoGRID, AIST, Japan
2006 - 2007: Postdoctoral Fellow, Chiba University, Japan
2003 - 2006: Research Scientist, Earthquake Disaster Mitigation Research Center, Kobe, Japan
1997 - 1999: Head of Spatial Database Group, DITAGIS, HCMC University of Technology, Vietnam