Alexander Velichkin
Verified Expert in Engineering
.NET Developer
Alexander is a .NET开发人员,提供超过八年的领导小型团队设计web的经验, desktop, and mobile applications with a passion for .NET Core, Angular, and DevOps. Alexander擅长提供可靠和创新的策略和解决方案,以提高现有应用程序的性能并推动业务增长.
Portfolio
Experience
Availability
Preferred Environment
TFS, Git, DataGrip, Visual Studio Code (VS Code), Visual Studio
The most amazing...
...我分析和改进的项目性能是一个基于web的应用程序,它有大量的报告和数千个用户同时工作.
Work Experience
Senior C# .NET Developer
Debate.org (via Toptal)
- Eliminated spam by creating a Regex-based, 后端服务,通过RabbitMQ与web应用程序通信,并自动过滤用户内容.
- Integrated third-party services Google ReCaptcha, Analytics, AdSense and Taboola Ads, Pingdom, and SendGrid with a web application—resulting in increased revenue, performance, and accessibility.
- 将运行经典ASP的web应用程序的加载速度提高了40%.NET WebForms, DevExpress, jQuery, and MS SQL.
- 开发工具,管理员使用DevExpress HTML编辑器创建网页,而不涉及程序员.
- 通过使用Azure DevOps引入新的CI/CD流程来扩展和扩展开发功能,并为使用AWS的现有web应用程序设置新的开发和测试环境.
- 最小化在AWS EC2 (Windows Server)和RDS (MS SQL Server)机器上维护web应用程序和后台服务的停机时间.
Senior C# .NET and Xamarin.Forms Developer
Atos IT Solutions and Services, LLC.
- Developed web application using ASP.. NET Web Forms和DevExpress组件为全球房地产公司自动化工作流. App跟踪资本支出和运营支出的变化,并生成PDF和XLS报告.
- 使用ComponentPro简化了Excel报表的操作构建模块, 开发Windows服务来执行后台的长时间处理操作, and creating Xamarin.Forms applying UI components.
- 优化了Xamarin和Xamarin使用的多平台库的数据共享设计.Forms and ASP.NET MVC projects to synchronise, serialize, encrypt, and validate data sent between Android smartphones and server.
- 使用MS SQL Server和本地MySQL数据库开发自动同步库,使最终用户能够离线工作,并在稍后的时间间隔与服务器端数据库同步数据.
- 提高了XLS和PDF报告的性能,减少了50%的生成时间.
- 设计并创建了一个VBA MS Access应用程序,供多个用户同时使用,具有报表和身份验证功能.
Senior WPF and C# Developer
Donation Kiosk (via Toptal)
- 为触摸屏定制控件(如按钮)制作了一个WPF应用程序, labels, and list views.
- 节省了通过JSON使用PHP后端向桌面WPF应用程序添加自动更新功能的无数时间.
Senior C# .NET Developer
MotionGlass
- 使用ASP编写了一个带有英特尔RealSense摄像头和基于web的管理面板的桌面WPF应用程序.NET MVC and MS SQL Server.
- 为WPF应用程序和基于web的管理面板之间的交互创建了一个WCF服务,用于远程访问.
Load-testing Engineer
Home Credit and Finance Bank, LLC.
- 通过使用JMeter为负载测试创建测试计划和使用Python 3为日志文件分析创建脚本,增强了性能.
- Prepared sample data for test plans using the Oracle database.
ActionScript 3 and C# .NET Developer
BI-Leasing, LLC.
- Streamlined operations, 架构内部应用程序,使用PostgreSQL实现基于角色访问的流程自动化, ASP.NET Web API, AngularJS, and FastReport .NET.
- 使用Kinect 2、WPF和ASP开发了一个广告应用程序.NET MVC boosting visibility.
- 使用WPF为现有客户构建了一个允许在线银行的互联网kiosk应用程序.
- 使用OpenStreetMap API和ActionScript 3创建了一个地图应用程序.0 for Windows, Android, and iOS platforms.
- 开发ActionScript 3 UI组件库的加速知识共享被不同项目的多个团队使用.
Experience
K-Visor
http://k-visor.comK-Visor can be used do attract passers-by. An image from display starts interacting with them, 抓住他们的注意力,使他们能够通过几个简单的手势浏览有关商品和服务的信息.
Kiosk Application
将应用程序交付给带有触摸屏显示器和所有必要硬件的客户端.
Data Sync Library
Background Service
This task made it easier for moderators to work.
Skills
Languages
C#.NET, C#, SQL, HTML5, ASP.NET Razor, JavaScript, XML, Python 3, CSS, HTML, TypeScript, Visual Basic for Applications (VBA), Visual Basic .NET (VB.NET), Excel VBA, Python, ActionScript 3, XAML
Frameworks
ASP, ASP.NET Web Forms, .. NET、Entity 6、Windows Presentation Foundation (WPF)、Microsoft Kinect、Razor Pages、MVC Razor、ASP.NET MVC 5, .NET 5, .NET 2, .NET 3, ASP.NET MVC 6, NUnit, ASP.NET Core MVC, Entity 5, ASP.NET Core, ASP.NET, ASP.NET MVC, ASP.NET Core 2, .NET 4, .NET Core, Entity Framework Core, ASP.NET Web API, Newtonsoft JSON, ADO.NET, Windows Communication Framework (WCF), AngularJS, ASP.NET MVC 4, Bootstrap, Razor, ASP.NET Identity, Angular, Classic ASP
Libraries/APIs
SendGrid API, Web API 2, Web API, JSON API, Entity Framework, Selenium WebDriver, Linq2SQL, ASPX, REST APIs, OpenStreetMap API, jQuery, LINQ, Fluent API, SignalR, AutoMapper, OpenID, Node.js
Tools
LINQ to SQL, DotTrace, Visual Studio .NET, Visual Studio 2015, ReSharper, TFS, Visual Studio 2013, Microsoft Visual Studio, Git, Visual Studio 2019, SendGrid, Visual Studio, Bitbucket, C#.NET WinForms, GitHub, WebStorm, Apache JMeter, xUnit.net, JetBrains Rider, DataGrip, Azure DevOps Services, PDFtk, Prism, RabbitMQ, Webpack, Gulp, Subversion (SVN), FastReport, Jira
Platforms
Visual Studio 2017, Amazon EC2, Visual Studio Code (VS Code), Windows, Oracle, ComponentPro, Amazon Web Services (AWS), Azure
Storage
SQL Server 2012, SQL Server 2014, SQL Server 2010, SQL Server 2008 R2, SQL Server 2016, SQL Server 2017, SQL Server 2005, Databases, Microsoft SQL Server, PostgreSQL, JSON, SQLite, MySQL, Web Forms
Other
GitFlow, Xamarin.Forms, DevExpress, Intel RealSense, DevExpress Controls, Ajax, APIs, Back-end, Back-end Development, Web Development, Full-stack, EF6 Code First, DI
Paradigms
Dependency Injection, REST, RESTful Development, Code First, Database First, Waterfall Development, Azure DevOps, Back-end Architecture, Test-driven Development (TDD), Unit Testing, Model View Viewmodel (MVVM)
Education
信息系统与技术理学硕士学位
Voronezh State Technical University - Voronezh, Russia
信息系统与技术理学学士学位
Voronezh State Technical University - Voronezh, Russia
Certifications
Become an ASP.NET Core Developer
ASP.NET Core New Features
ASP.NET Core: Middleware
ASP.NET Core: Razor Pages
ASP.NET Core: Security
ASP.NET Core: Test-driven Development
Building and Securing RESTful APIs in ASP.NET Core
Deploying ASP.NET Core Applications
Learning Entity Framework Core
Learning ASP.NET Core MVC
LinkedIn Learning
Microsoft Certified Solutions Associate
Microsoft