so ytyk@koiek0683South KoreaFollow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencekoiek0683 has not updated employment details yet.Educationkoiek0683 has not updated education details yet.