zhang yan@zhangyan8806United StatesFollow BadgesProblem SolvingJavaPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Python (Intermediate)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencezhangyan8806 has not updated employment details yet.Educationzhangyan8806 has not updated education details yet.