Aliaksei A.

Hello guys, My name is Alex. I have 15+ years of experience in Software Development. Before joining the freelance community, I spent 15 years working in different corporations to get the proper experience and knowledge. I'm an expert in software development, including the full design of the system from the perspective of architecture, including complex microservice architecture. Special offers for you: • Professional consultation on software development topics (e.g. development, learning, DB queries and optimizations - MySQL, MSSQL, MongoDB, etc), • Professional consultation on Migration (e.g. Web Form to .NET Core or similar), Architecture, Development, Team Building, Automation Deployment, etc.; • ASAP creation of the application architecture (proof of concept); • ASAP resolving performance issues related to bad code, DB queries, architectural design issues, etc. • Maintenance or development from scratch; • Anything related to the software development area; I created many startups and participated in the creation of an architecture of big projects (the list is below). I used many different technologies, and now I just need to look at the code to tell you where you'll have a performance issue or bug. No need to debug. I successfully upgraded several projects from Web Forms to .NET Core. I used several DBs (MS SQL, MySQL, and MongoDB). I know perfect SDLC and SOLID principles, so my estimations are perfect. I'm specializing in resolving performance and security issues (slow requests, refactoring bad code, resolving issues with bad practices, migrations from old to new technologies, etc), Some more examples of recent activities: - creation of modern apps with new technologies, microservice architecture, monolith apps, etc..; - migration apps from Web Forms to .NET Core; - developed high-load applications with 50000+ requests per second - microservice architecture; - creation of an architecture for huge e-commerce projects and small product apps; - trades, insurance, bank software, corporate solutions, and custom product apps; - usage of Excel/CSV/PDF in .NET Core/web forms/MVC apps for generating reports; - databases like SQL Server, MySQL, MongoDB; - Azure Service Bus/RabbitMQ/Hangfire for creating pub-sub apps; - the configuration of Azure for production, including release engineering (DevOps/TC/Octopus). - INTEGRATIONS: - Zapier, Marketo, Reveal, Salesforce APIs, etc.; - Enrichment API; - Payments API (Stripe); - Many other APIs. And many others. Short Info: • 17+ years in Software Development • Expert in implementing large-scale and complex software solutions • Expert in management, experience with an internal/external staffing (on/offshore mix of resources) • Perfect knowledge of software development processes (SDLC) & methodologies • Business trips across the continent including Eastern and Western Europe Background projects are: • Trades (UK) • Social communication, virtual events (US) • Insurance Soft (US) • Pharmaceutical Soft (US) • Office security soft (ES) • Plex (US) • NakedAuto (social project) • CatInPhone (Android application) • HawkSearch (US) HighLoad (multiple technologies and DBs: Mongo, Elastic, Relation DB) • Bank Soft (BY) • Job.ru (RU) • hundreds of small projects Technical Background: • .NET, C#, VB.NET, ASP.NET (Web Forms, MVC, Web API, .NET Core), REST, ORMs (EF, Dapper, custom ORMs), etc. • Ajax, JavaScript (jQuery, Bootstrap, Angular, Vue JS, many custom JS libraries) • XML/JSON, CSS/LESS, HTML • SVN, GIT, TFS, TeamCity, Octopus, Unit testing, Selenium • MS SQL Server, MySQL, Redis • MongoDB, Databricks • RabbitMQ, Service Bus, Kafka • Cloud services Azure, ML/AI MCP/Agents