Haoyuan MA@HaoyuanMaBackend at ThundersoftChinaFollow BadgesProblem Solving CertificationsCertificate: Java (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork ExperienceHaoyuanMa has not updated employment details yet.EducationHaoyuanMa has not updated education details yet.