Denis Markhotka Email & Phone Number

Boston, Massachusetts, United States

Greater Boston

Greater Boston

Minsk, Belarus

Enterprise Connectors (connectors which gather and combine data from relational database management systems and REST-sources)• Migrated application from .Net to .Net Core for further running it in the Docker Container• Created and supported automation unit and end-to-end tests• Performed configuration and interaction with different ODBC drivers on MacOS and Linux based systems• Code refactoring, code review during the whole process of support• Deployed VM’s and… Show more Enterprise Connectors (connectors which gather and combine data from relational database management systems and REST-sources)• Migrated application from .Net to .Net Core for further running it in the Docker Container• Created and supported automation unit and end-to-end tests• Performed configuration and interaction with different ODBC drivers on MacOS and Linux based systems• Code refactoring, code review during the whole process of support• Deployed VM’s and configuring SSL on Apache Hive and Cloudera Impala• Bug fixing of frontend and backend parts of applicationUsed technologies: C#, .Net Core, Typescript, Docker, Kubernetes, GBQ, Gradle, Jenkins, Jira, GitProject: Handyman Office (software suite for service management, adapted to the needs of field technicians and office‐based workers with functions for managing, reporting, and documentation)• Reversed engineering of legacy code to migrate to .Net framework• Identified and investigated performance bottlenecks and improved performance by 20%• Implemented lazy loading technique in heavy clients• Optimized SQL procedures and functions• Performance improvement, code refactoring, code review during the whole process of support• Implemented new functionality for Windows-based tablets• Refactored synchronization mechanism between Client and Server• Improved performance data loading on a PC platform• Improved сode readability by its refactoring, reviewed the code during the whole process of supportUsed technologies: C#, WPF, VB.NET, VB6.0, .Net 4.5, WinForms, Entity Framework 5.0, DevЕxpress v16.1, ANTS Performance Profiler, MS SQL Server, SQLite, BlueStacks, TFS Show less

Moscow, Russia

Electronic document management system based on DocsVision project. (electronic document management system)• Developed multiple T-SQL queries, SQL jobs, stored procedures.• Achieved better performance for several complex SQL queries for large tables using SQL profiler• Increased performance of the client and server• Introduced multi-threaded .NET tools and WCF/Windows services to empower DocsVision platform.• Implemented a few extensions for the system (Windows… Show more Electronic document management system based on DocsVision project. (electronic document management system)• Developed multiple T-SQL queries, SQL jobs, stored procedures.• Achieved better performance for several complex SQL queries for large tables using SQL profiler• Increased performance of the client and server• Introduced multi-threaded .NET tools and WCF/Windows services to empower DocsVision platform.• Implemented a few extensions for the system (Windows Forms).• Redesigned a data replication system between multiple DocsVision remote servers.• Developed installers for both server and client side and integrating them under one application (Windows Forms).• Created a new multi-installer tool, which was used for installations on multiple remote serversUsed technologies: C#, WinForms, Docsvision, dotTrace, MS SQL Server, WCF, CruiseControl.NET, TortoiseSVN, Jira Show less

Minsk, Belarus

CMS (web-based reporting application that will improve electronic receiving and importing process of summary report data on oil rigs)• Improved сode readability by its refactoring, reviewed the code during the whole process of support• Implemented multiple reports based on SQL Server Reporting Services‎Used technologies: C#, ASP.NET MVC, ASP.NET WebParts, JavaScript (jQuery), Web Client Software Factory, Entity Framework, MS SQL Server 2008, SSRS, CruiseControl.NET… Show more CMS (web-based reporting application that will improve electronic receiving and importing process of summary report data on oil rigs)• Improved сode readability by its refactoring, reviewed the code during the whole process of support• Implemented multiple reports based on SQL Server Reporting Services‎Used technologies: C#, ASP.NET MVC, ASP.NET WebParts, JavaScript (jQuery), Web Client Software Factory, Entity Framework, MS SQL Server 2008, SSRS, CruiseControl.NET, TestTrackPro, Subversion. Show less

Belarus, Minsk

The application for managing federal and state government buildings and real estate• Deployed the application into commercial operation• Created functional and design specifications• Satisfied customer’s needs during supportUsed technologies: Delphi, VBA, Caché

Wallet System (payment system), SrediProfi (professional social network)Used technologies: C#, ADO.NET, ASP.NET, Ajax, Web services, Telerik Controls, Bugzilla, TortoiseSVN

Minsk, Belarus

Application for simple conversion of physical systems into virtual images, virtual images between hypervisor platforms, and virtual images into physical systems.Used technologies: C#, WinForms, XML, SQL, MSSQL2005/2008, MS Studio2005/2008, Infragistics, DevExpress, Vmware tools, Esx server, Xen Server, Rational ClearCase and ClearQuest

Minsk, Belarus

Website for one of the largest Russia-based mobile service providers• Automated unit and performance test development• Test specification creation and analysis of test results and created reports• Managing and support of load and functional testing scenariosUsed technologies: C#, JavaScript, HTML, CSS, TestComplete, Selenium

Master'S Degree, Information Technology And Software Engineering

Bachelor Of Science - Bs, Computer Systems And Networks