Sergey Fedorov@imfedrSoftware DeveloperRussian FederationFollow BadgesProblem SolvingPythonDays of CodeDays of JSRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Python (Intermediate)VerifiedskillWork Experienceimfedr has not updated employment details yet.Educationimfedr has not updated education details yet.