Yifan Hou@hyifan9988Software EngineerUnited StatesFollow BadgesProblem SolvingJavaDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Rest API (Intermediate)VerifiedskillWork Experiencehyifan9988 has not updated employment details yet.Educationhyifan9988 has not updated education details yet.