YONGJUN KIM@robustjun31Software EngineerFollow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencerobustjun31 has not updated employment details yet.EducationYonsei UniversityLinksrobustjun31 has not updated links details yet. Skillsrobustjun31 has not updated skills details yet.