Stefanus Kurniawan B@mailstefanuskbIndonesiaFollow BadgesProblem SolvingJavaDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencemailstefanuskb has not updated employment details yet.Educationnull