Geun-Hyung Kim@geunkimdevSouth KoreaFollow BadgesProblem SolvingDays of CodeDays of JSSqlRuby CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencegeunkimdev has not updated employment details yet.Educationgeunkimdev has not updated education details yet.