Just doing some C++ stuff

Worked on C++ based Risk Valuation Engine

Worked on optimization the Lua/C++ interoperability in PCRF project.PCRF (Policy and Charging Rules Function) is used by broadband service providers as a real-time QoS and charging management platform. The product supports open standards, enabling interoperability between equipment and information systems from any vendors. The main client is the third largest telecom operator in Russia with more than 80 millions customers.

Worked on 2-tier Linux GUI application (Qt5.5/C++14, PostgreSQL 9.2), software for air traffic controllers.

I worked on opensource projects (PL/Lua, PL/V8). Took part in Postgres Conference Moscow as a speaker ( pgconf.ru/2016/89656 abstract in rus)

Work in a team of developers, analytics, designers on a project of medical information system (3tier application, Qt/C++ 4.8.4, PostgreSQL 9.3/plpgsql/C, JavaScript). Responsible for fixing bugs, implementing new features(client plugins with custom logic, server DICOM plugins, embedding and extending lua/javascript etc.), improving application and database performance, writing auxiliary python scripts, performing database migrations:- created lots of ui styled controls using QWidget's and QGraphicsScene- refactored database code and structures without breaking DB interface for application server that improved overall database performance more than 100 times (plpgsql code, structure refactoring, creating rules, and etc.)- developed several Postgres C functions(specific maintenance functions, some of them work in conjunction with qt core libs)- created python scripts for generating database creation sql scripts based on latest db version(empty developer/production database) and scripts that make diff and generate migration sql scripts - moved custom client js logic to Postgres using plv8 that reduced time of developing our REST/SOAP services- changed the way of using common client logic patterns from a procedural code to a declarative code (all procedural code are generated according to json descriptions and database models, using this approach we only described what to use and the rest were generated) I also contribute to pllua (postgres language extension) (https://github.com/pllua/pllua).

Wrote dozens of tools and several applications with 150+ active users such as:Document workflow management system (used Qt/C++ 4.8, Firebird 2.1, QtTwainScan component) - written as analogue of “Evfrat” system that allowed to get rid of old version and specify to enterprise features.Real estate certificate system (used Qt/C++ 4.4.3 – 4.8, Firebird 2.1, MsSql 2005, XML, SpellTextEdit) – helped drastically to reduce time of making certificates, to get rid of using MS Word and to strengthen data control.Coordinated work on providing data to local authorities according to xml scheme specifications, wrote and maintained several software and tools(used Delphi 7-2006, C#\.NET 2.0, Qt 4.4.3 – 4.8).Made database migration of proprietary software from Yaffil 1.5 to Firebird 2.1.

Created many small tools that converted images, transferred data from excel documents to databases, ETL systems, made web page for company (Flash 8, Actionscript 1.0), created ios application with information about all real estate objects in the city, and other stuff.

Worked at software maintenance of ERP+CRM system in a small group of developers (Oracle 8, PL/SQL, Delphi 4)