Sergei Kornilov@KosernikprogrammerFollow BadgesProblem SolvingJavaDays of CodeDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillWork ExperienceKosernik has not updated employment details yet.EducationKosernik has not updated education details yet.LinksGithubhttps://github.com/Kosernik SkillsKosernik has not updated skills details yet.