Jeffrey Lu@jeffrey_lu324United StatesFollow BadgesProblem SolvingPythonSqlRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencejeffrey_lu324 has not updated employment details yet.Educationjeffrey_lu324 has not updated education details yet.