Dongjoon Lee@joon1251Follow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencejoon1251 has not updated employment details yet.Educationjoon1251 has not updated education details yet.Linksjoon1251 has not updated links details yet. Skillsjoon1251 has not updated skills details yet.