Ajith K.

.NET Full Stack Developer and Senior Azure Architect with 7+ years of hands-on experience building, modernizing, and scaling enterprise applications, SaaS platforms, and cloud-native solutions. I specialize in C#, .NET, .NET Core, .NET 10, ASP.NET Core, ASP.NET Core Web API, MVC, REST API development, Entity Framework Core, LINQ, SQL Server, PostgreSQL, Azure, Microservices, and Clean Architecture. WHERE I HELP • .NET application development and enterprise software engineering • ASP.NET Core Web API development and RESTful API integration • SaaS product development, multi-tenant architecture, and MVPs • C# backend development, business logic, and database optimization • Legacy application modernization, including Web Forms, VB.NET, and older .NET Framework applications • Microservices architecture, distributed systems, and cloud-native development • Azure cloud architecture, deployment, and application modernization • Performance optimization, debugging, refactoring, and technical debt reduction • AI integration with OpenAI, RAG, Semantic Kernel, MCP, and AI agents .NET TECHNOLOGIES & EXPERTISE C#, .NET, .NET Core, .NET Framework, .NET 10, ASP.NET Core, ASP.NET MVC, Web API, REST APIs, Entity Framework Core, LINQ, ADO.NET, SQL Server, PostgreSQL, MongoDB, Elasticsearch, Azure App Services, Azure Functions, Azure SQL, Microservices, Clean Architecture, Domain-Driven Design (DDD), SOLID principles, Dependency Injection, Design Patterns, Background Services, WPF, WinForms, LINQ, asynchronous programming, performance tuning, and database schema optimization. SELECTED EXPERIENCE • Built a multi-tenant cybersecurity SaaS platform from scratch on Azure. • Developed and supported an eDiscovery platform with 20+ .NET microservices, MongoDB, and Elasticsearch. • Architected a multi-tenant marketplace with PCI DSS and ADA compliance requirements. • Delivered enterprise desktop and web applications for Royal Enfield. • Migrated a live Amazon seller platform from Amazon MWS to Selling Partner API. AI + .NET DEVELOPMENT Integrate OpenAI, Claude, and Gemini APIs into .NET applications, build Retrieval-Augmented Generation (RAG) pipelines, implement AI agents, and connect enterprise workflows using Semantic Kernel and Model Context Protocol (MCP). HOW I WORK From solution architecture and C# development to API integration, database design, cloud deployment, and production support, I build maintainable, secure, performant, and scalable software. 43+ Upwork contracts delivered | Top Rated Plus Based in IST, with flexible overlap for European and US time zones. Share your requirements for a straightforward technical assessment and a practical implementation plan. Keywords: .NET Developer, Fullstack .NET Developer, ASP.NET Developer, ASP.NET Core Developer, C# Developer, C Sharp Developer, .NET Core Developer, Full Stack .NET Developer, Microsoft .NET Developer, Azure Developer, C# Backend Developer, .NET Backend Developer, Web API Developer, Entity Framework Developer, SQL Server Developer, Microservices Developer, SaaS Developer, Enterprise Software Developer, React .NET Developer, Power Automate Developer, Microsoft Power Automate, Workflow Automation Developer, Business Process Automation, AI .NET Developer.