Hiroshi Koizumi@attglobalsSoftware EngineerFollow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillWork Experienceattglobals has not updated employment details yet.Educationattglobals has not updated education details yet.LinksLinkedinhttps://www.linkedin.com/in/koizumi/ Skillsattglobals has not updated skills details yet.