Ritwik M.

Lead .NET C# Developer & AI Engineer | ASP.NET Core | Azure | OpenAI Building software is easy. Building software that still works after your business grows is much harder. I'm a Lead .NET C# Developer and AI Engineer with 13+ years of experience helping startups and growing companies design, build, and scale SaaS platforms, AI products, CRMs, marketplaces, and enterprise applications on the Microsoft stack. Build Once. Scale Confidently. Most products don't struggle because of the features they ship. They struggle because of the architectural decisions made during the first few months of development. For over 13 years, I've helped founders, funded startups, and established businesses build .NET applications that scale, from MVPs to enterprise platforms. As a Lead .NET Developer and AI Engineer, I work across backend architecture, API design, AI integration, cloud infrastructure, and hands-on development, while leading teams to deliver on time. Whether you need someone to rescue an existing .NET product, modernize a legacy application, or lead development from idea to launch, I bring both technical depth and business thinking. What I Help Clients Build ✅ AI-powered SaaS Platforms ✅ Multi-tenant .NET Applications ✅ Enterprise CRM & ERP ✅ Healthcare Platforms ✅ Fundraising Platforms ✅ Sports & Booking Systems ✅ Marketplaces ✅ Internal Business Applications ✅ Customer Portals ✅ AI Agents & Workflow Automation What Makes Me Different I don't just write C# code. I build .NET systems that are clean, maintainable, and cheaper to grow. Clients usually hire me when they need to: • Build a .NET MVP correctly from day one • Scale an existing ASP.NET Core SaaS • Integrate AI into an existing .NET platform • Migrate legacy ASP.NET MVC / .NET Framework apps to modern .NET • Rescue delayed or unstable development projects • Improve code quality and architecture • Lead remote development teams • Act as a long-term technical partner AI Expertise AI isn't an add-on. I've designed and deployed production AI systems in .NET using • OpenAI • Azure AI Foundry • Claude • RAG • Vector Databases • AI Agents • Prompt Engineering • AI Workflow Automation Recent AI implementations include ✔ Intelligent report generation ✔ AI-powered CRM workflows ✔ Document understanding ✔ Structured LLM pipelines ✔ Email automation ✔ Internal AI assistants Recent Projects Fundraising Platform Led development of an enterprise fundraising platform featuring • Multi-tenant architecture • 4-level RBAC • Clerk authentication • Azure deployment • Modular API design Healthcare Platform Designed and delivered an enterprise pharmacy management system featuring • Inventory Management • Reporting • Stock Tracking • Multi-user dashboards Sports Platform Built a real-time sports booking platform with • Live availability • Payment integration Technical Expertise ✔ .NET & C# C#, .NET 8/9, ASP.NET Core, Web API, ASP.NET MVC, Entity Framework Core, LINQ ✔ Architecture Clean Architecture, Microservices, Event-driven, REST APIs, Multi-tenancy, SOLID ✔ Databases SQL Server, PostgreSQL, Supabase ✔ Frontend React, Next.js, Angular, TypeScript ✔ Cloud & DevOps Azure (App Service, Functions, Service Bus), AWS, Docker, CI/CD, Terraform ✔ AI OpenAI, Azure OpenAI, Azure AI Foundry, Claude, RAG, Vector DB, AI Agents Why Clients Work With Me ✔ Deep .NET expertise ✔ Team leadership ✔ Clean, maintainable code ✔ Strong communication ✔ Transparent delivery ✔ Business-first mindset ✔ Production AI experience ✔ Long-term partnership Let's Talk If you're looking for a senior .NET developer who can lead the technical side of your product, not just write code, I'd be happy to discuss your project.