Vasyl K.

Full Stack .NET & AI Developer | C# | ASP.NET Core | React | SQL Server | AI Integration Looking for a .NET Developer to build a web application, develop a REST API, improve an existing C# backend, or integrate third-party services? I help businesses develop reliable, scalable, and maintainable software using C#, .NET, and ASP.NET Core. My focus is on building practical solutions that solve real business problems, from backend development and custom web applications to API integrations and database-driven systems. What I Can Help You With ✅ .NET & ASP.NET Core Development - Custom web applications using C# and ASP.NET Core - Backend development and business logic - ASP.NET Core Web API and RESTful services - Existing .NET application maintenance and improvements ✅ REST API Development & Integration - REST API design and development - Third-party API integrations - API debugging, validation, and error handling - Data synchronization between applications ✅ Custom Business Applications - CRM and business management systems - SaaS platforms and admin dashboards - Internal tools and workflow automation - Database-driven web applications ✅ SQL Server & Database Development - Microsoft SQL Server integration - Database design and SQL queries - Entity Framework Core - Data management and performance optimization ✅ Backend Architecture & Maintenance - Clean, maintainable C# code - Application refactoring and modernization - Backend troubleshooting and bug fixing - Scalable application architecture Technologies Backend: C#, .NET, ASP.NET Core, ASP.NET Web API, REST API Database: Microsoft SQL Server, Entity Framework Core, SQL Development: Backend Development, API Integration, Web Application Development, Software Architecture Why Work With Me? I focus on understanding your business requirements before writing code. My goal is to deliver software that is easy to maintain, works reliably, and supports your business as it grows. You can expect clear communication, attention to technical details, and a practical approach to solving development challenges. Have a .NET project in mind? Send me a message with your requirements. I'll review your project and suggest the best technical approach, whether you need a new ASP.NET Core application, REST API integration, SQL Server development, or improvements to an existing system.