이주상 @jscsmkSouth KoreaFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencejscsmk has not updated employment details yet.Educationjscsmk has not updated education details yet.