Sergey Markachev@kotkrokSoftware EngineerFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: C# (Basic)VerifiedskillWork Experiencekotkrok has not updated employment details yet.Educationkotkrok has not updated education details yet.Linkskotkrok has not updated links details yet. Skillskotkrok has not updated skills details yet.