Giannis Aggelis@johnniehdk12Software EngineerGreeceFollowAboutEducationDemocritus University of Thrace BadgesProblem SolvingCPPJavaDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencejohnniehdk12 has not updated employment details yet.EducationDemocritus University of ThraceElectrical Engineering & Computer Science, B.Tech•  October 2015 - October 2021