.NET Software Engineer with 5+ years of commercial experience developing and maintaining enterprise web and desktop applications using C#, .NET, ASP.NET Core, Entity Framework, and MS SQL Server.Worked on distributed retail systems, internal business platforms, analytics tools, and client-specific enterprise solutions. Responsible for backend services, REST APIs, business logic, database development, background processing, and integrations with internal and external systems.Developed solutions using Clean Architecture, CQRS, MediatR, MVC, and MVVM. Implemented asynchronous and scheduled processing with Hangfire, Quartz, RabbitMQ, and Azure Service Bus, as well as real-time communication using SignalR. Worked with Redis, Elasticsearch, and MinIO for caching, search, analytics, and object storage.Designed and optimized MS SQL Server queries, stored procedures, views, and database integrations. Investigated production issues, improved application and database performance, and gradually refactored legacy functionality in large existing codebases.Developed web functionality with ASP.NET Core and Angular and desktop applications using Avalonia UI and MVVM. Worked in cross-functional Agile teams with frontend developers, QA engineers, business analysts, DBAs, and DevOps engineers. Participated in task estimation, technical discussions, code reviews, releases, and production support.