Developing and support microservices with using C# and .Net Core, Apache Kafka, MS SQL Server.

Developing a new satellite service which collect, process and send results to server information about backuped objects.To Windows agent service was added the ability to run an additional separate satellite process. Satellite process runs when on computer works or installed target application. Agent service control the state of satellite process and rerun it if required. Agent service and satellite process joint by Win32 API Job Object. Job Object helps terminate the satellite process on unexpected termination of agent service.To satellite process was added a new functionality for collecting information about objects backuped by target application. Target application expose REST API which used by satellite process to collect required information. Then satellite process does processing, aggregating and saving information to a local store. After success collect satellite process send through agent service to main server notification about new portion of information.The main server after receiving notification about new information send to satellite process request for getting information about backuped objects.Also were written stored procedures for database server for processing and aggregating information received by main server from all satellite processes.The team used git-flow and code review.

As a senior backend developer was doing implementation of new functionality according to business requirements. Adding new commands and queries within the CQRS paradigm using the Mediatr library.Also was writing SQL scripts to manage database objects and code for stored procedures.Performing a code review.

Working on support and maintenance products for support auto dealers work.Adding new/fixing existing functionality using ASP.NET MVC, WebForms, Razor, jQuery.Writing stored procedures for managing data and implementing part of the logic in the database.Moved legacy WCF-service to .Net Core 2.1 and Docker container on Windows Nano Server 2016 with support SOAP (backward combability for current clients) and implement REST API (for new clients).Support and maintenance only critical tasks for the legacy product.Technical leadership by a team of two developers and one tester, task assessment, code review, sprint planning.Main tasks:- implement new functionality by customer request

Development of a system for ensuring the payment of subsidies and benefits. Adding new/fixing existing functionality using ASP.NET MVC 4 (updated to MVC 5), Razor, jQuery. Working with the database using the EntityFramework 6 ORM and using the CodeFirst approach (subsequently, the migrations were moved to a separate project to reduce the assembly size, and were used only to update the database). Analysis and optimization of heavy queries to the database. Adding/changing reports using DevExpress. Organization of interdepartmental exchange of information with GIS ZKH services. Team leadership of a team of two developers and one tester, assessment and distribution of tasks, code review.Main tasks:- implement new functionality by customer request- implement user reports using DevExpress component

Working on WinForms/WebForms applications for support of travel companies: "Master-Tour" and "Master-Web".Teamwork. Adding new functionality, developing plugins, developing WCF services, developing autotests, finding and solving customer problems.Main tasks:- implement new functionality by customer request- implement user reports using SharpShooter Reports.Win component from Perpetuum Software- optimize "heavy" SQL queries- rewrite old legacy components to .Net/C#

1) Administrator of LAN with 200 workstations;2) One MS Windows Server 2003:Active Directory/Domain Controller,File-server;3) 3 servers with FreeBSD 9.0:Gateway to internet access with ipfw/pf and Squid,Setup VPN between campuses by OpenVPN;4) Implement base virtualization by VmWare ESXi 5.1:the first ESXi host:- server with FreeBSD 9.1: gateway to internet access (ipfw+NAT) for all other virtual machines;- two servers with MS Windows Server 2003 R2 with Terminal service for 1С 7.7 + Kerio WinRoute 6.7.1 (the VPN server);the second ESXi host:- server with FreeBSD 9.0: Web-server: Apache 2.2 (several virtual hosts), PHP 5.3 + modules, MySQL 5.5;- server with FreeBSD 9.0: Mail-server: exim-4.80 + courier-imap-4.12 with authorization by Active Directory;- server with MS Windows Server 2003 R2 with File server role;- server with MS Windows Server 2008 R2 with RemoteApp role for education version of 1С 8.1;- server with MS Windows Server 2003 R2 as a license server for Autodesk products;5) server with MS Windows Server 2008 R2 with RemoteApp role for 1С 8.2 and 1С 7.7 applications

Analysis and optimization of customer applications for optimal performance on high-performance servers on the Intel platform.Work with Intel tools such as Intel Trace Analyzer and Collector, Intel Performance Tune Utility (VTune), Intel Thread Profiler, Intel C ++ Compiler and Intel MPI.