Alexandr Duplishchev@ppalexRussian FederationFollow BadgesProblem SolvingCPPJavaPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experienceppalex has not updated employment details yet.Educationppalex has not updated education details yet.