Ten-year-experiences in making and managing CAD engineering drawings; Nine-year-experience in calculating bridge structures (especially in bored pile, driven pile, abutment, pier, Super T girder, slab girder, PCI girder) by structural analysis software (MIDAS/Civil, MIDAS Set, FB-Pier, Geo Slope, etc.) in accordance with Vietnamese Specification (22TCN272-05), American Specification (AASHTO LRFD), American Concrete Institute (ACI); Self-study in Visual Basic for Applications (VBA) for AutoCAD; Two-year-experience in making profile of business (ITC., JSC), preparing CVs for bidding; One-year-experience in working with Japanese Project Manager; Four-year-experience working in Korean contractor DAELIM;