Hi, I am a .Net developer having 12+ years of professional experience with a wide range of technologies and Frameworks. I am proficient with the following technology stack: ✅ .Net Framework, Asp.net Core , ✅ Xamarin Expert ✅ MAUI ✅ Angular Expert ✅ NativeScript-Angular.JS/Vue.JS ✅ Ionic/Angular ✅ Apache Cordova ✅ Capacitor ✅ Node.JS ✅ Typescript, SAAS & LESS ✅ Azure , AWS, EC2, lambda, S3, RDS, Cloud Front, Cloudformation, Rekognition, Kinesis, translate, Amplify and Elasticsearch. ✅ MySQL, Oracle, MSSQL server, PostgreSQL MongoDB, Dynamo ✅ Maven, Ant, Jenkins, Circle CI, CI/CD in Bitbucket and Gitlab ✅ Docker CLI, docker-compose, Orchestration with Kubernetes, Docker Swarm, and Amazon ECS I have recently completed an ongoing project so currently, I am open for new engagements and can be available for 40-50 hours per week.

I’m Muhammad Haseeb, Full Stack .NET Architect with 10+ years building scalable multi-tenant SaaS platforms and RAG AI chatbots using ASP.NET Core, React, Node.js, and LangChain. 🚀 SaaS MVP to Production: Multi-tenant apps, Stripe subscription systems, 10K+ user scale (ASP.NET Core, Next.js, PostgreSQL). 🤖 AI Solutions: Custom RAG chatbots (OpenAI, Azure OpenAI), AI workflow automation for business data. 💻 Tech Stack: ASP.NET Core, C#, React, Angular, TypeScript, FastAPI, Docker. Clients choose me for production-ready code, fast delivery, and real SaaS scaling experience. Let's build your AI-powered SaaS—message me!

I help businesses build scalable, secure, and high-performance web applications that are ready for real-world usage. What I deliver: • Backend: .NET 8/9, ASP.NET Core, Web API • Frontend: React, MVC • Cloud: Azure, CI/CD • Databases: SQL Server, PostgreSQL, MySQL • Legacy upgrades & third-party integrations Why clients work with me: ✔ Clean, maintainable architecture ✔ Scalable systems (not quick fixes) ✔ Reliable communication & delivery 👉 Let’s build something that scales — click “Invite” to start.

✅ Top rated profile and 100% Client Recommendation. ✅ 5 Stars Rating. ✅ Suggest best solutions to client with fluent English. ✅ 24 hrs response time. ----------------------------------------------------------------------------- I am IT Professional and working as Software Architecture, Software Engineer, IT Consultant. Over the last 16+ years I am working on variety of Microsoft Technology including ASP.NET, MVC, .NET Core, Window Application, WCF, WPF, WebAP, Angular, React JSI. I have hands-on experience with MS SQL Server, MySQL, PostgreSQL, MongoDB. I have CMS experience with Kentico and Umbraco. I worked on small and big size projects, including website, web application, desktop application, Window Services, SaaS application, PaaS application. I have technical expertise in developing software packages for various domains like POS, ERP, Forex Software, e-Commerce Application, Kiosk Software, Education, Energy (Smart city and EV charging), Hospitality and Food Management Software, Sports Betting Systems etc. I have deep knowledge of various software development life cycles such as Agile, Scrum, Water Fall and Incremental, Involved in all phases of SDLC like analysis, estimation, design, coding, testing and deployment. I am good at version control and source code management, build, release and deployment processes. Experience in setting-up and maintaining development, test, UAT, staging & production environments. I am an effective communicator with exceptional relationship management skills with ability to relate to people at any level of business and management. Reasons to hire me: - I am a very responsible (does not disappear with a half-done job); - I am available at least 6 hours of daytime (whatever your timezone is); - I can spend at least 30 hours/week on your project (the project will be completed on time); - I work very quickly, which will save you very many time and a lot of money. Thanks so much for stopping by and checking out my profile! Please don’t hesitate to get in touch with me if there’s anything else you’d like to know about me or my work

Senior .Net Developer with over 10 years of IT experience in all phases of software development life cycle (SDLC) - Project Analysis, Requirements, Design, Development, Testing, and Deployment and Documentation. Extensive experience in .NET Framework Web based application development using Microsoft.NET technologies including ASP.NET, .net core C#, angular 8, ADO.NET, WCF, AJAX, ADO.NET, XML, COM, COM+, DCOM, VB, Java and VB scripts and ASP.

I help SaaS founders and businesses build and scale high-performance .NET applications from MVP to production-ready systems used by real customers. With 10+ years of experience, I specialize in designing scalable backend systems, modern web applications, and enterprise-grade solutions across industries such as logistics, healthcare , insurance SaaS, construction, HR automation systems, and many more using ASP.NET Core, ABPIO, and cloud technologies. 𝐈 𝐭𝐲𝐩𝐢𝐜𝐚𝐥𝐥𝐲 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡: ✔ Startups building SaaS, web, or AI-powered applications from scratch ✔ Businesses scaling or improving existing .NET systems and platforms ✔ Companies looking to integrate AI into their existing applications (automation, chat, smart workflows) ✔ Teams needing custom-built solutions tailored to specific business processes ✔ Founders turning ideas into production-ready applications (MVP → scale) 𝐖𝐡𝐚𝐭 𝐈’𝐯𝐞 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 → Built multi-tenant SaaS platforms, enterprise web applications, and custom .NET systems with ABP → Developed high-performance REST APIs and backend systems handling real-world production workloads → Designed and delivered full-stack web applications for business-critical use cases Improved application performance and reduced response times through optimization → Migrated legacy systems from .NET Framework to .NET Core for better scalability and maintainability → Integrated AI-powered features into SaaS and web applications 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 C#, .NET Core, ASP.NET Core, ASP.NET MVC ABPIO (Modular Architecture, Multi-Tenancy) REST APIs & Web API Development Microservices Architecture Authentication (JWT, OAuth, Identity) Clean Architecture, SOLID Principles 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 Blazor (WebAssembly & Server), Razor Pages Angular / React JavaScript, TypeScript 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 SQL Server, PostgreSQL, MySQL MongoDB, Cosmos DB, DynamoDB Entity Framework Core (EF Core) Query Optimization & Performance Tuning 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 Microsoft Azure, Google Cloud Platform Docker & Containerization CI/CD (Azure DevOps, GitHub Actions) Deployment, Monitoring & Performance Optimization 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 (𝐑𝐞𝐚𝐥-𝐖𝐨𝐫𝐥𝐝 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬) ✔ Built an AI-powered HR system that analyzes resumes and matches candidates with job requirements, reducing manual screening effort ✔ Developed an AI-based EdTech platform with a virtual AI tutor/avatar for interactive learning and engagement ✔ Created an AI-powered inspection & compliance solution to identify issues, validate data, and ensure regulatory compliance using fine-tuned AI models ✔ Built AI chat systems to automate customer support and reduce response workload ✔ Automated workflows for data processing, summaries, and internal operations ✔ Integrated OpenAI and Claude APIs into ASP.NET Core applications 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐖𝐢𝐭𝐡 → SaaS Application Development (ABPIO / .NET Core) (Concept to MVP to Production) → Full-Stack Web Application Development → Enterprise .NET Application Development & Architecture → ASP.NET Core Web API & Integration → Microservices Development → Legacy System Modernization (.NET Framework → .NET Core) → Database Design & Optimization → Azure Cloud Deployment & DevOps Setup → AI Integration into Web & SaaS Applications → Ongoing Maintenance, Scaling & Feature Development 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 ✔ Hands-on experience with real production systems ✔ Experience as a Technical Lead (architecture + code quality) ✔ Ability to work independently and take full ownership ✔ Strong focus on clean, scalable, and maintainable solutions ✔ Clear communication and reliable delivery ✔ Long-term collaboration mindset ⭐ 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: [ .NET Developer, ASP.NET Core Developer, C# Developer, Full Stack Developer, Azure Developer, SaaS Developer, SaaS Application Development, Multi-Tenant SaaS, ABP Framework, Web API Development, REST API Developer, Microservices Architecture, Enterprise Application Development, Scalable Web Applications, Backend Developer, AI Integration, OpenAI API Integration, Claude API Integration, AI Automation, Angular Developer, React Developer, Blazor WebAssembly, SQL Server, PostgreSQL, Entity Framework Core, Cloud Developer, Docker, CI/CD Pipelines, DevOps, Legacy System Migration, Startup MVP Development, Real-Time Data Systems] 𝐋𝐞𝐭’𝐬 𝐖𝐨𝐫𝐤 𝐓𝐨𝐠𝐞𝐭𝐡𝐞𝐫 𝐈𝐟 𝐲𝐨𝐮'𝐫𝐞 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐚 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭, 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐨𝐫 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐬𝐲𝐬𝐭𝐞𝐦 𝐮𝐬𝐢𝐧𝐠 .𝐍𝐄𝐓, 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐝𝐞𝐬𝐢𝐠𝐧, 𝐛𝐮𝐢𝐥𝐝, 𝐚𝐧𝐝 𝐬𝐜𝐚𝐥𝐞 𝐢𝐭 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭𝐥𝐲. 𝐅𝐞𝐞𝐥 𝐟𝐫𝐞𝐞 𝐭𝐨 𝐫𝐞𝐚𝐜𝐡 𝐨𝐮𝐭 𝐈’𝐦 𝐡𝐚𝐩𝐩𝐲 𝐭𝐨 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐲𝐨𝐮𝐫 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐬𝐮𝐠𝐠𝐞𝐬𝐭 𝐭𝐡𝐞 𝐛𝐞𝐬𝐭 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡.

✅15+ Years of Experience | ✅Top Rated Plus Upworker | ✅35000+ Hours | ✅95+ Completed Projects | ✅100% Job Success Hello! I'm Angel, a full-stack engineer with a passion for delivering high-quality software solutions. My career started in 2007, and since then, I've had the opportunity to work in the USA, the Netherlands, and remotely for clients around the world. I specialize in full-stack development, with expertise in both frontend and backend technologies, cloud infrastructure, and cross-platform development. My primary goal is to satisfy client needs by delivering cost-effective solutions, and I am committed to being available whenever you need me. Core Competencies: Backend: .NET Core, ASP.NET MVC, ASP.NET Web Forms, Microservices, Entity Framework, LINQ, MS SQL Server. Serverless computing: Azure Functions, AWS Lambda Frontend: Angular, Vue.js, JavaScript/TypeScript, jQuery, Knockout.js, Tailwind Bootstrap. Cloud: AWS, Azure, Azure Cosmos DB, MongoDB, Docker, Kubernetes. Cross-Platform: .NET MAUI, WPF. APIs and Integrations: Web API, Social Media APIs (Facebook, Twitter, Google). E-commerce: nopCommerce. When I'm not working, you'll find me spending quality time with my two kids or out on a long run—I’m a marathon runner with over 40 marathons completed. I bring the same perseverance and determination to my work as I do to my running, and I'm always ready for the next challenge. I am currently looking for new and exciting projects to work on—let's collaborate and bring your ideas to life!

Over the last 8+ years, I have developed a wide range of different applications using .NET Framework and .NET Core framework(ASP.NET Core 2+, ASP.NET MVC 3-5, WPF, WinForms, etc) and GHL and various UI development (React.js, Angular.js, JavaScript, JQuery, Bootstrap, CSS, Tailwind CSS, HTML, PHP, Laravel, etc). My goal is to participate in an interesting project and to establish a long-time collaboration with the customer. Experience and Skills: * 5+ years of experience as a QA Manual Tester. * 2+ years of experience in GHL, n8n Automation, AI integration, AI Agents • 7+ years of experience in analyzing, designing, developing, and maintaining web, Windows, N-Tier Object Oriented applications. • Experience in developing desktop applications using C#, WPF, Winforms, ADO.NET, Entity Framework. • Experience in ASP.NET, MVC, Ajax, jQuery, CSS, HTML, PHP, Laravel • Experience in working on Design Patterns & Practices like MVC, MVP, and MVVM. • Experience in developing n-tier C# applications. • Experience in developing Data Access Layers using various ORM and native libraries: Entity framework 6+, Entity framework core, bltoolkit, dapper, ADO.NEt • Experience in complex data collection and analysis for automating processes • Ability to take and give directions and instructions, and provide assistance through the completion of tasks. • Strong analytical and problem-solving skills.

𝐈’𝐦 𝐚 𝐂# / .𝐍𝐄𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with deep experience building and improving 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭-𝐬𝐭𝐚𝐜𝐤 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 across 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞, 𝐖𝐞𝐛 𝐀𝐏𝐈𝐬, 𝐀𝐳𝐮𝐫𝐞, 𝐚𝐧𝐝 .𝐍𝐄𝐓 𝐌𝐀𝐔𝐈. 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬, I work with clients who need more than just code written — they need someone who can step into real products, understand the business logic, improve weak areas, solve technical issues, and keep delivery moving with confidence. My work typically involves 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐀𝐏𝐈𝐬, 𝐜𝐥𝐨𝐮𝐝 𝐝𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭, 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐦𝐨𝐝𝐞𝐫𝐧𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐨𝐟 𝐞𝐱𝐢𝐬𝐭𝐢𝐧𝐠 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐬𝐮𝐩𝐩𝐨𝐫𝐭. I also use 𝐀𝐈-𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐞𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 workflows with tools such as 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞, 𝐂𝐨𝐝𝐞𝐱, 𝐂𝐮𝐫𝐬𝐨𝐫, 𝐚𝐧𝐝 𝐆𝐨𝐨𝐠𝐥𝐞 𝐀𝐧𝐭𝐢𝐠𝐫𝐚𝐯𝐢𝐭𝐲 to speed up development, debugging, refactoring, and iteration. I use these tools to improve execution speed, but I rely on engineering judgment for architecture, maintainability, code quality, deployment, and production decisions. My background also includes .𝐍𝐄𝐓 𝐌𝐀𝐔𝐈 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐗𝐚𝐦𝐚𝐫𝐢𝐧 𝐦𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞, 𝐚𝐧𝐝 𝐗𝐚𝐦𝐚𝐫𝐢𝐧-𝐭𝐨-𝐌𝐀𝐔𝐈 𝐦𝐢𝐠𝐫𝐚𝐭𝐢𝐨𝐧, which is especially useful for clients who need to modernize existing mobile applications without losing momentum on current products. Whether the project involves building from scratch, improving an existing codebase, migrating older Microsoft applications, or supporting a long-term roadmap, I focus on delivering stable, maintainable solutions that are ready for real business use. If you’re looking for a dependable 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭-𝐬𝐭𝐚𝐜𝐤 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫 who can combine modern .NET expertise with faster 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐞𝐱𝐞𝐜𝐮𝐭𝐢𝐨𝐧, I’d be glad to discuss your project.

🏆 Upwork Top Rated PLUS Professional 🤖 AI-Enabled .NET & Cloud Solutions Specialist (Azure OpenAI | AWS AI) ⭐ Consistent 5-Star Client Feedback 🔰 8+ Years of Professional Experience ⌚ 3200+ Hours Delivered on Upwork 💯 Fast Response (within 2 hours) & Full-Time Availability I’m a senior full-stack .NET developer specializing in AI-enabled applications, cloud-native systems, and scalable backend architectures. With over 8 years of hands-on experience and Top Rated Plus status on Upwork, I help businesses modernize their products by combining reliable engineering with practical AI solutions. My work focuses on ASP.NET Core–based systems, modern frontend frameworks, and secure AI integrations using Azure OpenAI and AWS AI services. I don’t build AI for demos—I integrate it where it adds real value, improves workflows, and enhances user experience while keeping performance and security intact. 🔧 Core Technical Expertise Backend & APIs ASP.NET Core, C#, Web API, MVC RESTful API design & secure integrations Microservices architecture with Docker & Kubernetes Frontend React, Angular, Vue, Blazor Responsive UI development & performance optimization Cloud & Infrastructure Azure & AWS (production deployments & scalability) CI/CD-friendly, cloud-native system design Databases SQL Server, PostgreSQL, MongoDB, SQLite Database design, optimization & data integrity Entity Framework, ADO.NET 🤖 AI & Intelligent Solutions (.NET | Azure OpenAI | AWS) I have strong practical experience integrating LLM-powered features into .NET applications, including AI chat interfaces, intelligent search (RAG), data summarization, content automation, and AI-assisted workflows. Using Azure OpenAI Service and AWS AI services, I ensure clean API integration, secure data handling, and scalable deployment suitable for enterprise environments. 🧩 What I Deliver Full-stack web application development API development & third-party integrations Cloud-ready backend systems AI-enabled features for modern applications Performance optimization & system refactoring Blazor-based interactive applications I’ve worked across ERP systems, WMS platforms, e-commerce solutions, and custom business applications, with a strong focus on long-term maintainability and performance. If you’re looking for a developer who combines AI, cloud, and solid engineering, I’d be happy to discuss your project. Let’s build something reliable and future-ready. 🚀