Konstantin Y. Rybakov@viocostIndependent software engineerRussian FederationFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: JavaScript (Basic)VerifiedskillCertificate: JavaScript (Intermediate)VerifiedskillWork Experienceviocost has not updated employment details yet.Educationviocost has not updated education details yet.