Manish R.

Senior Full Stack .NET Developer with 10+ years of experience building enterprise applications using ASP.NET Core, Sitefinity, Umbraco, Optimizely, React, Next.js, NET Core Headless CMS + Azure DevOps. I also help businesses integrate AI solutions using OpenAI, Azure OpenAI, AI Agents, and intelligent automation into existing .NET applications. 💼 My Expertise ✔ .NET, ASP.NET Core, ASP.NET MVC, C#, Web API ✔ React, Next.js, JavaScript, TypeScript ✔ AI API Integration (OpenAI, Azure OpenAI, ChatGPT APIs) ✔ Umbraco, Sitefinity, Optimizely (Episerver), NopCommerce ✔ SQL Server, PostgreSQL, MongoDB, MySQL ✔ Azure, AWS, CI/CD, DevOps ✔ REST APIs, Third-Party Integrations & Microservices ✔ Performance Optimization, Debugging & Application Support ✔What I build: .NET Backend & REST API Development ASP.NET Core Web APIs and Microservices using Clean Architecture, CQRS, and MediatR. Entity Framework Core, SQL Server, PostgreSQL, and MongoDB. Tested with xUnit and TDD — not added at the end. ✔Full-Stack SaaS Development End-to-end platforms with React, Angular, Next.js, and TypeScript frontends connected to .NET backends. NgRx and Redux for state. Production-ready, not just demo-ready. ✔Azure Cloud & DevOps Azure App Services, Functions, Key Vault, Service Bus, and Azure AD. CI/CD with Azure DevOps and GitHub Actions. Docker containerisation from day one. ✔AI Integration Azure OpenAI and OpenAI API wired into live .NET applications — already shipped, not proof-of-concept. ✔Third-Party Integrations Stripe, QuickBooks, SAP, ServiceNow, and Azure AD. Complex integrations handled end-to-end. ✔Testing & Code Quality TDD, xUnit, Selenium, and integration testing baked into the process — not added at the end when it's already broken. ✔Stack: Backend: C# · ASP.NET Core · .NET 8 · SignalR · Microservices · CQRS · MediatR · Clean Architecture Frontend: React · Angular · Next.js · TypeScript · NgRx · Redux Databases: SQL Server · PostgreSQL · MongoDB · CosmosDB · Entity Framework Core · Dapper Cloud & DevOps: Azure · Docker · CI/CD · Azure OpenAI · Azure DevOps · GitHub Actions Integrations: Stripe · QuickBooks · SAP · ServiceNow · Azure AD If you're building a .NET SaaS platform, FinTech product, or AI-integrated web application — send me the brief. less. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer | Full Stack | Mobile App Developer|Umbraco| optimizely |Sitefinity| SaaS Application Development | Full Stack SaaS Developer | MERN Stack developer | MEAN Stack developer | Full Stack Developer React Node | React | Node | Next.js | MongoDB | REST API | .NET | PERN | React.js | React Developer | Node.js | React Node | Backend nodejs | node.js developer | Full Stack MERN | MERN MEAN | MERN developer | MERN stack | MEAN developer | .NET developer | .NET core | Full Stack .NET Developer | Azure | AWS | Google Cloud | REST API | Nextjs developer | Full Stack Developer | Web Developer | API Developer | .NET Angular | Microservices | Multi-Tenant SaaS | DevOps | .NET Framework | Saas | Full Stack React Developer | Full Stack Node.js Developer | Full Stack Angular Developer | CI/CD | Full Stack Development | Web Application Development | mern Full Stack Developer | mean Full Stack Developer | .net Full Stack Developer | SaaS Expert | React Full Stack Developer | Node Full Stack Developer | Angular Full Stack Developer | mern Stack Developer | Saas Expert Senior .NET Developer | ASP.NET Core Developer | C# Developer | Azure Developer | AI Integration | OpenAI API | Azure OpenAI | ChatGPT Integration | .NET Developer | Web API | REST API | Microservices | SQL Server | Entity Framework Core | Clean Architecture | Cloud Application Development | SaaS Development | Enterprise Software | AI Chatbot Development | Business Automation | Software Architecture|Umbraco|Sitefinity|Umbraco cloud|Sitefinity Cloud|Optimizely|Optimizely DXP|Optimizely APIs|Optimizely developer|Umbraco headless| Umbraco APIs|Sitefinity|Sitefinity Developer|Sitefinity Development|Sitefinity CMS|Sitefinity Customization|Sitefinity Upgrade|Sitefinity Migration|Sitefinity Integration||Sitefinity API|Sitefinity .NET|Umbraco Developer|Umbraco CMS|Umbraco Development|Umbraco Customization|Umbraco Migration|Umbraco Upgrade|Umbraco API|Umbraco Integration|Headless CMS|CMS Development Custom CMS Development