Serhii Tyshchenko@tsergiivPhp Web DeveloperFollow BadgesJavaDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencetsergiiv has not updated employment details yet.Educationtsergiiv has not updated education details yet.Linkstsergiiv has not updated links details yet. Skillstsergiiv has not updated skills details yet.