Zhang Jianfeng@windhkHong KongFollow BadgesProblem SolvingCPPDays of CodeDays of JSDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: C++ (Basic)VerifiedskillWork Experiencewindhk has not updated employment details yet.Educationwindhk has not updated education details yet.