@cathyqiujingUnited StatesFollowAboutEducationColumbia University, New York BadgesProblem SolvingPythonDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillWork Experiencecathyqiujing has not updated employment details yet.EducationColumbia University, New York