Serhii Shtelmakh@shtelmahsergiyFollow BadgesProblem SolvingRuby CertificationsCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillWork ExperienceGlobalLogicEducationshtelmahsergiy has not updated education details yet.Linksshtelmahsergiy has not updated links details yet. Skillsshtelmahsergiy has not updated skills details yet.