Hire the Best ASP.NET Developers
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✅ 9+ years mastering ASP.NET Core, ABP IO, C# & Clean Architecture for enterprise backends 🤖 AI Integration Expert - OpenAI, Azure AI, Semantic Kernel & intelligent automation ☁️ Azure Cloud & Modern Frontend Pro - React, Angular, Blazor + production-ready deployments I’m a Senior .NET Full Stack Developer and AI Solution Architect with 9+ years building scalable enterprise applications. My core expertise lies in C#, ASP.NET Core, ABP IO, React, Angular, and Azure, but I specialize in delivering AI-powered .NET Full Stack solutions that drive real business impact. I seamlessly integrate modern AI technologies into .NET platforms - OpenAI GPT models, Azure AI Studio, Semantic Kernel for .NET, LangChain.NET, intelligent document processing, AI chat automation, predictive analytics dashboards, and automated workflow orchestration. Whether you need an ASP.NET Core backend with embedded AI agents or a full AI-enhanced React/Angular frontend, I deliver production-ready .NET Full Stack systems that are smarter, faster, and more efficient. 💡 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗲𝗹𝗶𝘃𝗲𝗿 𝗶𝗻 𝗘𝘃𝗲𝗿𝘆 𝗔𝗜-𝗣𝗼𝘄𝗲𝗿𝗲𝗱 .𝗡𝗘𝗧 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 - ASP.NET Core, ABP & AI Backend Mastery: Clean Architecture, minimal APIs, Entity Framework Core, JWT security, and direct integration with Azure OpenAI, Semantic Kernel, and custom LLM endpoints. - Modern Frontend + AI UX: Angular, React (Redux, TypeScript), Blazor, HTML5, CSS, Tailwind – plus AI-driven interfaces like real-time chatbots, smart search, and auto-generated UI components. - Azure AI & Cloud Excellence: Azure App Services, Azure Functions, Azure SQL, Azure AI services, Cognitive Services, Docker, Kubernetes, GitHub Actions CI/CD – all optimized for AI workloads. - Multi-Stack & Advanced AI Flexibility: Node.js microservices when needed, Python for data pipelines, Golang for high-concurrency, plus full AI stack (OpenAI, Azure AI, vector databases, RAG patterns) inside .NET Full Stack applications. - Databases & Real-Time AI Systems: SQL Server, PostgreSQL, MySQL, MongoDB, plus SignalR/WebSocket for AI-powered live dashboards and notifications. - Architecture & Modernization: Multi-tenant SaaS platforms, legacy ASP.NET MVC migrations to ASP.NET Core or ABP + AI, microservices, gRPC, and AI-augmented systems that cut costs while boosting intelligence. 🏗️ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 𝗳𝗼𝗿 𝗔𝗜-𝗘𝗻𝗵𝗮𝗻𝗰𝗲𝗱 .𝗡𝗘𝗧 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗪𝗼𝗿𝗸 I don’t just code, I architect intelligent solutions. I’ve successfully delivered AI-integrated .NET Full Stack platforms that automate operations, provide instant insights, and scale on Azure. From OpenAI-powered customer support bots inside ASP.NET Core or ABP apps to AI-driven analytics dashboards in React + Azure, every project ships with measurable ROI. Ready to build a smarter .NET Full Stack application with AI at its core? Let’s discuss your goals and create a secure, scalable, AI-powered solution that gives you a genuine competitive edge. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: .NET Core | ASP.NET Core | ABP | ASP.NET Core Developer | ASP.NET Web API | C# Developer | Full Stack .NET Developer | AI-Powered .NET Developer | Azure AI Developer | Semantic Kernel | OpenAI Integration | Azure AI | .NET AI Solution Architect | React | Angular | Blazor | React .NET Developer | Angular .NET Developer | Blazor Developer | TypeScript | JavaScript | HTML5 | CSS | Tailwind | Node.js | Python | Golang | Microservices | Multi-Tenant SaaS | SaaS Application Development | Multi-Tenant SaaS Developer | .NET SaaS Expert | Full Stack SaaS Developer | Clean Architecture | Minimal API | Entity Framework Core | JWT | OAuth | SignalR | WebSocket | RabbitMQ | Docker | Kubernetes | Azure | Azure App Services | Azure Functions | Azure SQL | CI/CD | GitHub Actions | PostgreSQL | SQL Server | MySQL | MongoDB | gRPC | Legacy Modernization | ASP.NET MVC Migration | RAG Pattern | LangChain.NET | Vector Database | LLM Integration | AI Chatbot | AI Automation | AI Dashboard | Full Stack React Developer | Full Stack Angular Developer | Full Stack Blazor Developer | .NET Developer | ASP.NET Developer | Azure Developer | AI Full Stack Developer | .NET 9 | .NET Aspire | Semantic Kernel .NET | Azure OpenAI | Production .NET Full Stack | Enterprise .NET Developer | Scalable .NET Application | AI-Enhanced .NET | Full Stack Development | Web Application Development | API Development | REST API | DevOps | Cloud Native .NET

✅ Top-Rated Senior Developer ✅ 100% Job Success Score ✅ Available for part-time, full-time long-term projects on Upwork (up to 40+ hours/week) ✅ Government ID Verified ✅ Professional Experience ✅ Expertise in .NET-based Web Applications, RESTful APIs, SPA architectures, CMS solutions, and enterprise-grade systems I’m a Senior Full-Stack .NET Developer with 6+ years of hands-on experience delivering and optimizing production-ready applications using C#, ASP NET / .NET Core, ABP Framework, and frontend technologies such as Angular, React, and modern JavaScript frameworks. I work across both backend and frontend, focusing on APIs, database design, performance optimization, and building responsive, user-friendly interfaces. What I Help You With - Custom web applications & system upgrades - Secure, efficient API integrations - Performance optimization & code refactoring - Long-term maintenance & scalability improvements Technical Expertise - Backend: C#, ASPNET MVC/Core, Web API, EF/EF Core, ABPio - Frontend: Angular, React, Vue, Blazor WASM, Nextjs, Tailwind, Telerik/Kendo UI - Databases: SQL Server, Azure SQL, MySQL, PostgreSQL, MongoDB - Cloud & Tools: AWS, Azure, Git, Visual Studio, CI/CD - Platforms: Windows Server, Linux, macOS Why Choose Me ✔ Clean, scalable, and maintainable code ✔ Fast delivery without sacrificing quality ✔ Client-focused communication ✔ High-performance, real-world applications ✔ Money-back guarantee & long-term discounts Availability 🕒 Part-time or Full-time (40+ hrs/week) | Ready to start immediately 💬 Response within 1 hour | Flexible time zones 👉 Click “Hire Now” or “Invite to Interview” to get started. Best regards, Le Xuan Thuan

25+ years of experience. Author of AccomNET accounting/sales software. Skills: .NET Framework: VB.Net/C#/VBA ASP.Net/ASP.Net Core/ Blazor Flutter Python React, Vue.js, Next.js Microsoft SQL Server

As a seasoned Full Stack .NET Developer with over 6 years of hands-on experience, I have successfully built and delivered 40+ fast, reliable, and scalable .NET web applications. I specialize in creating enterprise-grade software solutions using C#, ASP.NET MVC/Core, Web API, and Angular technologies. My backend expertise enables developing secure, high-performance .NET systems that efficiently manage millions of transactions and users. On the frontend, I craft interactive and responsive applications using Angular, ensuring seamless user experiences across platforms. 🔹Services Offered: - Custom Full-Stack Web Development - Custom Web Application Development - API Development & Integration - Desktop Applications - Responsive Web Design - FinTech and Payment Systems Development - Database Management & Optimization 🔹 Full-Stack & Web Development: - .NET Core, ASP.NET Core, ASP.NET MVC, ASP.NET Web API - C#, .NET, .NET Framework, .NET 6, 7 - Angular, JavaScript (ES6+), TypeScript, jQuery - Razor Views, Web Forms, WebForms, WinForms - Entity Framework, Entity Framework Core - Tailwind CSS, Bootstrap 5, Material UI, shadcn/ui - HTML5, CSS3, SCSS, Styled Components - PSD/Figma/Sketch to HTML 🔹 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: - Google APIs (OAuth 2.0, Authentication, Maps, etc.) - Stripe, PayPal, AWS SDK, Azure, Strava, OpenAPIs - ElasticSearch, Redis, Dropbox, BluePay 🔹 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗤𝘂𝗲𝗿𝘆 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: - MySQL, PostgreSQL, MongoDB, Microsoft SQL Server, DynamoDB, Firebase - GraphQL, SQL, MongoDB Query Language (MQL) 🔹 𝗧𝗼𝗼𝗹𝘀 & 𝗢𝘁𝗵𝗲𝗿 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: - RESTful APIs, WebSockets, WebRTC, Git, GitHub, GitLab, Bitbucket - Blazor, SignalR, JWT, Passport.js, Firebase Auth, SCRUM - AWS (EC2, S3, SNS, SES, Lambda, ElasticSearch, Redis) 🔹 Whether you are looking for a robust .NET web application, advanced API development, or secure database optimization, I bring reliability, speed, and scale to every solution. Let’s transform your ideas into impactful digital experiences.

I have experience working in various tech roles, including technical advisor, team lead, senior software engineer, and full-stack developer. Responsibilities include consulting with clients to select the right technical solutions, recommending improvements, and coordinating with team members to ensure that projects are delivered on time and meet high standards. I also handle VPS management, deployments, and platform migrations using the latest technologies. Below are the tech stacks I’ve worked with: ☑ Ruby on Rails; PHP Laravel; Node.js, ExpressJS, NextJS; Kafka, GraphQL; HTML, HAML, JavaScript, TypeScript, JSON, XML, YAML; Testing: Rspec, Capybara, PHPUnit ☑ Databases: MySQL, PostgreSQL, MongoDB ☑ Server: nginx, Ubuntu, Cloudflare, and other CNDs; VPS: DigitalOcean, OVHcloud, Vultr ☑ SEO: JSON-LD, Google Pagespeed; Frontend: Vue.js, ReactjS, jQuery; Design: Bootstrap, Tailwind CSS, Foundation, Materialize ☑ DevOps: Docker, Kubernetes, Minikube, Helm, AWS, GCP; Version Control: Git, GitHub, GitLab, Bitbucket, Git Flow ☑ Domain & Email: Namecheap, GoDaddy, Custom email with Zoho, Email Hosting Services, Mailchimp, Mailgun I've worked with various projects, companies, languages, frameworks, CMS, and technologies, helping me quickly adapt and apply best practices. This broad knowledge allows me to efficiently handle performance and security issues and offer tailored solutions, diving deeper into problems as needed. Are you looking for a developer to: ◎ Build a website from scratch with high code quality ◎ Enhance security/performance/fix bugs/ implement new features independently or collaborate with your English-speaking team ◎ Improve Google Page Speed score I'm a Senior Software Engineer with 15 years of experience developing secure, scalable web applications. I can help resolve these issues. While I may not claim supremacy in this field, I offer a unique combination of commitments: ☑ I dedicate my time to the in-depth understanding of your challenges. ☑ Swift problem-solving: I quickly tackle complex technical issues that may challenge others. ☑ Security mastery: Years of experience inform my comprehensive security audits and implementations. ☑ Risk insight: I help you navigate and mitigate technical project risks, drawing on extensive experience. ☑ Performance enhancement: I specialize in advanced optimization for applications and databases. This approach sets me apart in delivering value and results. I've found some major problems in web applications: ◼ Slow loading times and poor performance ◼ Scalability issues during traffic spikes ◼ Security vulnerabilities and data breaches ◼ Poor database query optimization ◼ Difficulty maintaining and updating monolithic architectures ◼ Difficulty implementing complex business logic ◼ Poor test coverage and quality assurance processes My experience allows me to deliver results beyond basic requirements, anticipating needs and providing enhanced value.