Anton Tolmachev@anton_tolmachevRussiaFollow BadgesProblem SolvingDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experienceanton_tolmachev has not updated employment details yet.Educationanton_tolmachev has not updated education details yet.