Sergey Zenzinov

- Database development and optimization - Database refactoring - have optimized storage (saved 300GB) and made data loading 5 times faster - Integration with a wide range of heterogeneous sources (MSSQL, MySQL, internal webservices, NoSQL databases). Have optimized the processes so that all the changes in the external databases are transferred into our system with a max delay of 30 sec and adding new data source doesn't require changes in the code. - OLAP cubes development - MS SQL mentoring

- Created OLAP cubes to replace existing reports - Created monitoring system to track the data consistency. - Have designed and implemented the self-maintaining code approach.

- Software migration from older versions of SQL Server to SQL Server 2008 - Performance optimization - Architectural changes in order to optimize the process of client data generation - Implementing BI solutions - Internal business processes improvements

Project infrastructure development

Being an E5 employee have been working at TMS as a contractor. Responsibilities: - Database development - Performance optimization - Internal systems support and improvement - Served as a trainer for the development team (MS SQL Server)

Working on OT/IPMCE/E5 projects in the same team as a database developer. Have participated in a wide range of projects including - Transactional websites - Banking software (Unicredit bank) - OeBS customisation for SvyazInvest

Theoretical mechanics