Joy Jiao@joy20123Follow BadgesProblem SolvingCPPSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencejoy20123 has not updated employment details yet.EducationHarvard University, CambridgeLinksjoy20123 has not updated links details yet. Skillsjoy20123 has not updated skills details yet.