Konstantin Zhdanov@jkemailRussian FederationFollow BadgesProblem SolvingCPPJavaSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Java (Intermediate)VerifiedskillCertificate: C++ (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencejkemail has not updated employment details yet.Educationjkemail has not updated education details yet.