D Chen@cdzhenUnited StatesFollow BadgesProblem SolvingCPPJavaDays of JS CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Java (Intermediate)VerifiedskillCertificate: C++ (Basic)VerifiedskillCertificate: C++ (Intermediate)VerifiedskillWork Experiencecdzhen has not updated employment details yet.Educationcdzhen has not updated education details yet.