Kostiantin V.

🚀 Senior .NET Developer | Acumatica ERP | React | Azure | AI Solutions I help businesses build, modernize, and scale enterprise applications, ERP systems, CRM platforms, SaaS products, and cloud solutions. With 13+ years of commercial software development experience, I have successfully delivered enterprise-grade applications from concept and architecture through deployment and long-term support. My expertise includes backend, frontend, cloud infrastructure, ERP customization, Microsoft 365 integrations, and AI-powered business solutions. Core Technologies ✔ C# ✔ .NET Framework ✔ .NET Core ✔ .NET 8 ✔ ASP.NET MVC ✔ ASP.NET Core ✔ REST API Development ✔ Entity Framework ✔ Entity Framework Core ✔ SQL Server ✔ Azure ✔ Azure DevOps ✔ Docker ✔ Microservices Frontend Development ✔ React ✔ TypeScript ✔ JavaScript ✔ DevExpress ✔ Infragistics ✔ HTML5 ✔ CSS3 ✔ Responsive UI Development Desktop Development ✔ WinForms ✔ WPF ✔ Enterprise Desktop Applications ✔ Legacy Application Modernization Acumatica ERP Expertise ✔ Acumatica ERP Customization ✔ Workflow Automation ✔ Business Events ✔ Generic Inquiries ✔ Custom DAC Development ✔ ERP Integrations ✔ Business Process Optimization Microsoft 365 & Office Development ✔ Excel Add-ins ✔ Outlook Add-ins ✔ Word Add-ins ✔ Office JavaScript API ✔ Microsoft Graph API ✔ Office 365 Integrations AI & Modern Development ✔ OpenAI API ✔ ChatGPT Integrations ✔ Claude AI ✔ GitHub Copilot ✔ OpenAI Codex ✔ Cursor AI ✔ AI Workflow Automation ✔ AI-powered Business Applications ✔ Document Processing Solutions Recent Project Experience • Enterprise CRM Systems • Acumatica ERP Customization • SaaS Platforms • Enterprise Dashboards • Legacy System Modernization • Cloud Migration Projects • Office 365 Add-ins • AI-powered Business Solutions • Database Optimization Projects • Enterprise Workflow Automation Why clients work with me: ✅ Clean and maintainable code ✅ Strong architecture and design skills ✅ Fast problem solving ✅ Excellent communication ✅ Reliable delivery ✅ Full project ownership ✅ Long-term partnership mindset Whether you need ERP customization, a modern SaaS platform, enterprise software development, AI integration, Office Add-ins, cloud migration, or modernization of an existing system, I can help deliver reliable and scalable solutions that create real business value.