Sergei Korolev@korser1Sr. SDEUnited StatesFollowAboutCurrentGastronom LLC BadgesProblem SolvingJavaSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: Rest API (Intermediate)VerifiedskillCertificate: C# (Basic)VerifiedskillWork Experiencekorser1 has not updated employment details yet.Educationkorser1 has not updated education details yet.