Serg Serge@SergZergRussiaFollow BadgesProblem SolvingPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork ExperienceSergZerg has not updated employment details yet.EducationSergZerg has not updated education details yet.