DY @dongyoonhaniOS engineerKorea, Republic ofFollowAboutEducationUniversity of California, San Diego (UCSD) BadgesProblem SolvingCPPDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencedongyoonhan has not updated employment details yet.EducationUniversity of California, San Diego (UCSD)