• Support, administration, maintenance of corporate Oracle DB Infrastructure
• Administering and managing large Company DB’s(10Tb)
• Database upgrades, migrations, cloning, patching activities
• Database auditing, PCI-DSS standard security compliance
• Support of several Development teams and their DB related questions
• Backup planning, implementation, tuning
• Support of Standby Databases(Data Guard)
• Production DB clones, preparations for development/test environment
• Database storage maintenance(EMC), capacity planning, backup optimization and disaster recovery planning/implementation and testing.
• Design and implementation of improvement in database, like migration to partitioned tables, utilization of materialized views, etc
• SQL query tuning, performance tuning and troubleshooting.
• Set up, update, maintenance and utilization of Enterprise Manager Cloud Control 12c/13c for database infrastructure monitoring
• maintenance of Nagios checks for database alerts

• On site, remote support of different Customers oracle databases
• Troubleshooting customers oracle database issues,troublehshooting, performance tuning,support and fixing all kind of oracle db issues of customers
• Discussion with customers about the requirements of database, database design, implementation, installation,post installation support & consulting
• Patching, upgrades, migrations of customer databases to latest releases
• Backup&Recovery planning, implementation of oracle databases for customers
• Disaster recovery solutions design & implementation for oracle databases of customers
• Mentoring and leading of team of consultants and planning and delivery of projects in time

Working on navy surveillance project(Ilexx) as a database consultant(Oracle, PostgreSQL), software testing with JUnit, testing of project modules, code optimization, writing services, database troubleshooting, design, performance tuning, writing complex sql/pgPL/SQL, PL/SQL procedures, queries, optimizing queries.

SAP Basis administration
Installation, configuration and upgrades, support pack, note installation, background job monitoring, user management, transport organization and management, SAP platform upgrades, and migrations, database upgrades and migrations, almost all of the Basis / NetWeaver related administration tasks, SAP Solution Manager installation and configuration.

Oracle and MS SQL DBA consultancy/administration
Backup / Recovery, performance management and troubleshooting, user security management and audit, maintaining database storage structures, Database design and implementation, installation / upgrade / patching. Providing support for production databases on the basis of 24 / 7. Database performance tuning, sql query tuning, database migrations, database design, monitoring and tuning(AWR, ASH, Enterprise
manager grid control) and other duties of database administration

Operation and maintenance of PrePaid subscribers system, consisting several nodes.
Solaris OS, Java based frameworks, Unix OS, Charging system administering and maintenance (Ericsson CS 3.0), installing new subs. into system, troubleshooting problems, deleting prepaid subs. from the system, tariff handling, etc. Unix shell scripting,
Oracle SQL, PL/SQL etc. Oracle & Sybase RDBMS. Monitoring system logs, reporting and handling errors etc.

Software development: Java / JSP / Servlet / JSF technologies.
MySQL, Oracle RDBMS. SQL/PLSQL. Apache Tomcat Web / Servlet Container. Sun's Application Server.
Unix administering tasks, VMWare management on Linux, troubleshooting network and internet connection etc.

Working as java programmer / developer on the AVIS project of the ministry of Taxes.
Used technologies: Java, JSP, Servlet. JBoss AS, Oracle RDBMS, SQL/PLSQL, XML, XSL-FO. etc.

C / C++ programming, Linux programming, POSIX threads, mutex, locks, semaphores are utilized in multithreaded application based on C / C++. Unix shell scripts. Delphi programming with for GUI part of the application. Also embedded programming for
microcontrollers AVR and PIC series.