thang le@llengocthanggVietnamFollow BadgesProblem SolvingSqlRuby CertificationsCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencellengocthangg has not updated employment details yet.Educationllengocthangg has not updated education details yet.