Tùng Nguyễn Thanh@tung_cs_1994Java developerViet NamFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillWork Experiencetung_cs_1994 has not updated employment details yet.Educationtung_cs_1994 has not updated education details yet.