Hire the Best .NET Core Developers in Delhi, IN

I build and fix QuickBooks integrations. For the past 8 years, I've connected custom software to QuickBooks—syncing invoices, payments, inventory, and customer data between business systems. Most clients find me when their integration is broken, half-built, or when they need to migrate from Desktop to Online without losing years of financial history. WHAT I WORK ON • QuickBooks Online API — OAuth 2.0, webhooks, real-time sync • QuickBooks Desktop — SDK and Web Connector integrations • Desktop-to-Online migrations — full data transfer with validation • Two-way sync — connect QuickBooks to your CRM, ERP, or e-commerce platform • Fixing broken integrations — taking over projects that aren't working RECENT WORK Scholarship Management Platform (ISTS) Migrated 50,000+ financial records from QuickBooks Desktop to Online. Built automated validation that caught 200+ data errors before migration. System now processes $2M+ in annual disbursements. Reduced monthly reconciliation from 8 hours to 45 minutes. HRM Platform Built time tracking and payroll modules with real-time data sync. WPF desktop app + Angular dashboard + Node.js backend. Automated timesheet processing saved client 6+ hours weekly. TECH STACK C#, .NET Core, ASP.NET MVC, Web API, Entity Framework, SQL Server, WPF, Angular, Azure Functions If you have a QuickBooks integration that needs building, fixing, or migrating—send me the details. I'll review your requirements and tell you exactly how I'd approach it.

I am a Senior Full-Stack .NET Developer with 10+ years of experience building scalable web applications, RESTful APIs, and enterprise-grade solutions using C#, ASP .NET Core, Angular, React, PostgreSQL, MS SQL Server, and Microsoft Azure. I specialize in end-to-end full-stack development with a strong focus on code quality, performance, scalability, and maintainability. I deliver production-ready systems that are clean, secure, well-tested, and easy to extend. 🔹 Backend & API Development C#, ASP .NET Core, ASP .NET MVC RESTful Web API development Entity Framework / EF Core MS SQL Server & PostgreSQL Query optimization, indexing, pagination, performance tuning Authentication & Authorization JWT, role-based access Clean Architecture & SOLID principles 🔹 Frontend Development Angular Developer (Angular 14+ / latest) React Developer TypeScript, JavaScript RxJS, Observables Guards, Interceptors, Standalone Components Async Pipe & state-driven UI Responsive, performance-optimized interfaces 🔹 Azure Cloud & Serverless Azure App Services Azure Functions Azure Blob Storage Azure Service Bus (queues & topics) Azure SQL Database CI/CD Pipelines Application monitoring & logging (Sentry) 🔹 Testing & Code Quality Unit Testing & TDD xUnit, MSTest (.NET) Jasmine & Karma (Angular) SonarQube Code quality gates, code smells, maintainability metrics High code coverage & production standards 💡 Why clients choose me ✔️ Proven Full-Stack .NET, Angular & React Developer ✔️ Strong experience with Azure cloud & serverless architecture ✔️ Emphasis on testing, clean code, and maintainability ✔️ Clear communication and realistic timelines ✔️ Comfortable with new development, bug fixes, refactoring, and performance optimization I have worked on enterprise systems, SaaS platforms, cloud-native APIs, dashboards, and data-driven applications, and I can quickly understand existing codebases to deliver results. If you’re looking for a reliable .NET Developer, Angular Developer, React Developer, or Azure Developer who values quality as much as delivery, I’m ready to help.

**Senior .NET Developer | ASP.NET Core | React | Blazor | AI** ⭐ 16+ Years of Experience | 200+ Successfully Delivered Projects ⭐ 5+ Years (10,000+ Hours) on Upwork with Consistent Client Satisfaction ⭐ Available Across Global Time Zones ## Professional Summary I am a Senior Software Developer with 16+ years of experience building web applications, APIs, cloud solutions, and enterprise software for clients across various industries. Over the years, I have delivered more than 200 projects ranging from startup products to large business applications. I enjoy solving challenging problems, writing clean and maintainable code, and helping businesses turn their ideas into reliable software solutions. My experience covers the complete development lifecycle—from understanding requirements and designing solutions to development, deployment, and ongoing support. I follow SOLID principles, design patterns, Clean Architecture, CQRS, and microservices best practices to build scalable, maintainable, and high-performance applications. In recent years, I have also been working extensively with Generative AI, AI-powered automation, RAG applications, LLM integrations, AI agents, and modern AI development tools to help businesses improve productivity and build intelligent software solutions. --- ## Core Technical Skills ### Backend & Frameworks ✔ ASP.NET ✔ ASP.NET MVC ✔ .NET Core (.NET 3.1, .NET 8, .NET 9) ✔ ASP.NET Web API ✔ Entity Framework Core ✔ Node.js ### Frontend Technologies ✔ React.js ✔ AngularJS ✔ Blazor ✔ JavaScript ✔ TypeScript ✔ jQuery ✔ HTML5 ✔ CSS3 ### AI & Python Development ✔ Python Development ✔ Generative AI Applications ✔ OpenAI Integration ✔ LLM-Based Solutions ✔ AI Chatbots & Assistants ✔ RAG (Retrieval-Augmented Generation) Applications ✔ AI Agents & Workflow Automation ✔ Prompt Engineering ✔ Vector Databases ✔ LangChain & AI Frameworks ✔ Document Processing & Knowledge Base Systems ✔ AI-Powered Business Applications ### AI Development Tools ✔ Codex ✔ Cursor ✔ Claude Code ✔ GitHub Copilot ✔ VS Code AI Tooling ✔ Antigravity ### Automation & Integration ✔ N8N Workflow Automation ✔ API Development & Integration ✔ Third-Party Integrations ✔ Webhooks & Event-Driven Systems ✔ Business Process Automation ### Cloud Platforms ✔ Microsoft Azure ✔ AWS ✔ Google Cloud Platform (GCP) ### Databases ✔ SQL Server ✔ PostgreSQL ✔ MySQL ✔ Oracle ✔ MongoDB ### Architecture & Development Practices ✔ SOLID Principles ✔ Design Patterns ✔ Clean Architecture ✔ Domain-Driven Design (DDD) ✔ Microservices Architecture ✔ CQRS (Command Query Responsibility Segregation) ✔ Event-Driven Architecture ✔ GraphQL APIs ✔ RESTful APIs ✔ Dependency Injection ✔ Repository Pattern ✔ Unit of Work Pattern ### Source Control & DevOps ✔ GitHub ✔ GitLab ✔ Bitbucket ✔ TFS ✔ SVN ✔ GitHub Actions ✔ GitLab CI/CD ✔ Azure DevOps ✔ Jenkins ### Additional Expertise ✔ Full-Stack Web Development ✔ SaaS Application Development ✔ Enterprise Application Development ✔ Legacy System Modernization ✔ Performance Optimization ✔ Application Maintenance & Support ### What I Bring to Projects ✔ Strong Full-Stack Development Experience ✔ Clean, Maintainable, and Scalable Code ✔ AI-Powered Solution Development ✔ Focus on Best Practices and Long-Term Maintainability ✔ Reliable Communication and On-Time Delivery ✔ Problem Solving for Complex Requirements ✔ Experience Working with Global Teams and Clients ✔ Long-Term Support and Maintenance

Hi, I’m a Mobile & Full-Stack Developer specializing in React Native, Java backend systems, and AI-powered features. I build scalable, user-friendly applications that are fast, clean, and designed for real users—not just functionality. From mobile apps to backend APIs and AI integrations, I focus on delivering products that feel smooth and reliable. 💡 What I bring: Cross-platform Mobile Apps (React Native) Backend Development (Java, APIs, integrations) AI-powered features (automation, smart insights, data-driven logic) Clean UI/UX with performance-focused development I care about writing clean code, building scalable systems, and creating apps that users actually enjoy using. If you want someone who understands both product thinking + technical execution, let’s connect.

I am a Microsoft Dynamics 365 CRM & Power Pages Developer with over 8+ years of experience delivering customized business solutions across diverse industries. I specialize in Dynamics 365 CE, Power Pages, and the broader Power Platform ecosystem, helping organizations automate workflows, streamline customer engagement, and extend CRM capabilities through portals and integrations. I love what I do and truly take pride in producing high-quality work and excellent customer service to my clients. 🔧 Core Expertise Includes: ✅ Plugins, Actions & Workflows (C#, .NET) ✅ Business Rule, JavaScript, Form Customizations ✅ Model-Driven Apps ✅ SSRS & FetchXML Reporting ✅ SSIS (Data Migration) ✅ Power Automate ✅ Integration with third-party systems using REST APIs ✅ Power Pages (formerly Power Apps Portals) development ✅ HTML, JavaScript, TypeScript, CSS, jQuery, Bootstrap ✅ .Net Core RESTful Web API ✅ XRMtool Box ✅ Entity Framework ✅ Angular JS, Angular, LINQ ✅ Azure Function Why choose me? 🟢Proven experience in building D365 CRM solutions / Power Pages 🟢Strong communicator with timely delivery 🟢Clean, maintainable, and well-documented code 🟢Ability to understand business needs and translate them into technical solutions Let's connect and discuss how I can contribute to your project's success!

12+ years of experience working on a wide range of .NET applications. My area of expertise is ASP.NET and .NET Core applications, Telerik controls for ASP.NET, Good Exposure and experience with Sitefinity and Umbraco CMS Development, Web services, jQuery, HTML/CSS, WCF, LINQ. I have expertise skills with .NET-Based CMS like Umbraco and Sitefinity. I have worked on all versions of Sitefinity from 3.x to the latest. I have good exposure working on Angular and have integrated this with numerous solutions in .NET applications You can approach me for any Sitefinity, Odata, .NET Core CQRS DDD APIs, AngularJS, Angular, Umbraco job/ assignments