Sergey Lem@iamlemSoftware Engineer United KingdomFollowAboutMore about meswift,obj-c,js,c++ BadgesProblem SolvingCPPPythonDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceiamlem has not updated employment details yet.Educationiamlem has not updated education details yet.