Hieu Do@qhd16Programming enthusiast.Follow BadgesProblem SolvingPythonDays of CodeDays of JSC languageRuby CertificationsCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillWork Experienceqhd16 has not updated employment details yet.Educationqhd16 has not updated education details yet.Linksqhd16 has not updated links details yet. Skillsqhd16 has not updated skills details yet.