Senior Database Developer
- Took part in migration of Taxpayer3 system oracle production database to Oracle Exadata (Oracle 11g, PL/SQL, SQL, TOAD, PLSQL Developer).- Long time of work experience with 1.5-2TB databases- Database optimization (partition, indexes and queries)- Data analysis of tables which have up to 1.5 billion rows- From OLTP to OLAP synchronization of billion rows via jobs hourly and daily- Risk monitoring system of “Cash register”- Risk monitoring system of “INVOICE”- Architecture design and implementation of E-Ledger project for Taxpayer Republic of Armenia (Include all system architecture, DB architecture, Core implementation, business logic, Chart of accounts, migration from old system to new and calculation of taxpayer personal account card (PL/SQL, SQL, XML, Oracle 11g all supported database object types and system packages, GIT, JIRA, TOAD, PLSQL Developer)).- Data analysis of tables which have up to 100 million rows(PostgreSQL, PL/pgSQL, SQL, XML, XSD)