Boris Korotaev@OnlyLowOnlyFastRussian FederationFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork ExperienceOnlyLowOnlyFast has not updated employment details yet.EducationOnlyLowOnlyFast has not updated education details yet.