I am a Senior Full-Stack Developer and Solution Architect with 8+ years of experience delivering scalable, production-ready web, mobile, and AI-powered applications. I work across the full stack React, Next.js, Node.js, ASP. NET Core, and Blazor and design reliable backend systems with clean APIs, secure data handling, and modern architectures. I also build and integrate AI solutions using Open AI and Claude, helping businesses automate workflows, generate content, and scale intelligently. My background includes SaaS platforms, AI automation systems, recruitment platforms, event-based applications, and publishing tools. I am comfortable taking full ownership of projects: requirements analysis, architecture, development, deployment, and long-term support. What I bring to your project Full-stack development (React, Node.js, ASP .NET Core, Blazor) AI & LLM integrations (Open AI, Claude, multi-model systems) System architecture & technical decision-making Cloud & DevOps experience (AWS, Azure) Database design (SQL Server, PostgreSQL, NoSQL) Clear communication & client-focused delivery I focus on building maintainable, scalable, and cost-effective solutions that align with real business goals—not just writing code.

I’m a senior .NET engineer with 10+ years of experience building scalable backend systems and modern web applications using ASP.NET Core and React. I design clean architectures, implement REST APIs, and build production-ready SaaS platforms. I also integrate AI capabilities, including OpenAI-based agents, RAG pipelines, and intelligent automation features into real-world products. On most projects, I take full ownership of backend development - from system design to production-ready delivery. In most projects, I am responsible for: • Design scalable backend architecture • Build secure ASP.NET Core Web APIs • Implement business logic and domain-driven structures • Integrate AI capabilities (OpenAI API, RAG, vector search, AI agents) • Optimize SQL Server performance • Structure systems using Clean Architecture and SOLID principles • Modernize and refactor legacy .NET applications 🔹 What You Get Working With Me • Clear technical planning before development begins • Clean, maintainable C# code • Scalable REST APIs designed for growth • Well-structured backend architecture • Reliable AI integration when needed • Transparent communication and predictable delivery I build backend systems that remain stable, extensible, and ready for future evolution - including AI-powered features. 🔹 Core Expertise Backend & Architecture: • C# • .NET Core / .NET 6 / .NET 7 / .NET 8 • ASP.NET Core, ASP.NET Boilerplate, ASP.NET Zero, ABP IO • REST API / Web API development • Entity Framework Core • SQL Server • Microservices architecture • Clean Architecture (SOLID, DDD) • Performance optimization • Legacy system modernization AI & Intelligent Systems: • OpenAI API & AI agents • RAG pipelines & vector databases • Semantic Kernel & tool orchestration • Embedding AI features into production SaaS platforms Frontend (When Required): • React • Angular • Blazor • JavaScript / TypeScript (My primary strength is backend and system architecture.) Additional Experience: • SaaS platform development • Third-party API integrations (Stripe, Google, Amazon, etc.) • Data modeling and database optimization • Unit testing (NUnit, xUnit) • Refactoring and architecture improvements 🔹 Best Fit Projects • Building scalable backend systems from scratch • Developing ASP.NET Core Web APIs • AI integration into existing products • SaaS platform architecture • Migrating legacy applications to .NET Core • Long-term product development partnerships If you're building a serious product and need a Senior .NET developer who can design robust backend architecture and integrate modern AI capabilities - I’d be glad to help.

🚀 Transforming Ideas into Exceptional Mobile Experiences 🚀 I am a mobile app specialist with 13+ years of experience, delivering high-performance applications for iOS and Android. My expertise includes Flutter, SwiftUI, and AI-driven solutions, with a strong focus on healthcare and business applications. ⭐What I Offer: - Custom mobile apps tailored to your needs. - AI integrations that enhance app intelligence. - Scalable, robust, and user-friendly solutions. 🛠️ Core Skills & Expertise: - Flutter, SWift, SwiftUI, Objective-C - Android Development (Kotlin/Java) - AI & Machine Learning Integration - REST APIs, Firebase, Cloudflare 🏆 Notable Achievements: Developed Amaze Health, a cutting-edge healthcare app, leveraging modern SwiftUI frameworks. Played a pivotal role in advancing the Countly iOS SDK, ensuring high performance and scalability. ✨ Why Choose Me? I’m committed to delivering: ✅ High-quality, user-focused apps that exceed expectations. ✅ Clear communication and collaboration throughout the project lifecycle. ✅ Timely delivery with a focus on robust architecture and scalability. 📈 What Clients Say: ⭐ "Muhammad is an exceptional developer. Amazing attention to detail and fantastic suggestions of his own which makes it a pleasure working with him." ⭐ "Junaid was knowledgeable, delivered on time, and presented different solutions effectively. Highly recommend!" Let's collaborate to turn your ideas into reality. I aim for 100% client satisfaction and have a proven record of delivering exceptional results. 💬 **Available for 30+ hrs/week** I’m here to help. Message me today, and let’s build something great together!

I am a Full Stack .NET developer having 7+ years of experience in Software Development. I am experienced in Windows and Web development with Microsoft technologies using C#, WPF, ASP.NET MVC, ASP Net CORE, ASP Web API, etc, I have working experience in these technologies and have been structuring applications in Model View Controller (MVC) and Model View View Model MVVM patterns.

I have over 30 years of software development experience on various host, mobile, and embedded operating systems. I am fluently engaged in several programming languages in mobile (Xamarin/MAUI), WEB (Blazor), embedded, multimedia, IoT, wireless, and networking fields. I have advanced knowledge of tools, methodologies, and best practices. I work as a freelancer now and provide my services on a project or hourly basis. Please see my profile below. Thanks PROFILE Key Skills • SW design and development • SW architecting • Mobile and WEB applications • Porting • Testing and debugging • Reverse engineering • API design • Board startup SW Domains • WebRTC • Mobile • WEB • Embedded • IoT • Multimedia • Networking Languages C#, C, C++, Assemblers, Java, TScript .NET .NET Core, Xamarin, Blazor, WebAPI/REST, MVVM, Bootstrap, SignalR, SQL, Entity Framework, Identity framework, OAUTH2/OIDC, WebRTC, Azure cloud services, Kestrel server, nanoFramework, Rx.NET, ReactiveUi Agile / Version Control / Continuous Integration JIRA, Azure DevOps, GitHub / Git, SVN / Jenkins Embedded OS FreeRTOS, EmbeddedLinux,ThreadX, WinCE/WEC,VxWorks, pSOS, Nucleus, OSE, eCos, MicroOS, DEOS, Bare Metal Mobile OS Android, iOS, Windows Mobile, Symbian OS Host OS Windows, macOS, Linux, FreeBSD, Solaris Processors ARM, Intel, PowerPC, MIPS, XTensa SoC STM32, QCA40xx, NHS31xx, iMX6, OMAP, ESP286, ESP32, Snapdragon Wireless WiFi, BLE, NFC, HF Radio Peripheral Busses SPI, I2C, USB

Focused & result-driven Full Stack IT Software professional with nearly 17 years of experience in Design, Development, Deployment, Debugging, Testing and Troubleshooting of application in desktop , web and mobile .Net Core Skills : .Net, WPF, C#, MVVM, MAUI, Asp.Net Core, WebApi, Microservices, Azure etc AI Core Skills : Python, AI/ML, RAG Agents, LLM, Open AI, LangChain,Fast API, Vapi, n8n etc Tools : VS 2022, CoPilot, Claude Code, SQL, PostgreSql etc Excellence in gathering and understanding requirements of clients & other multiple stakeholders (at strategic and tactical levels), followed by translation into functional specifications as well as provisioning of suitable solutions Extensively worked in Agile, CI/CD, GIT, TFS etc Engaged in various phases of Product Development Life Cycle from analyzing requirements specifications, high level design, user story development, Implementation, unit testing, defect fixing, Code reviews and production support maintenance An effective Sr. Developer and leader with proven skills in development and leading teams during the project phase; holds expertise in managing & supporting the clients

🥇 Over 14+ years of experience in Mobile development for both Native and Hybrid Platforms, with a focus on emerging technologies and the latest trends in the industry. 🥇 100% Job Success Ratio, 100K+ Earning 🥇 2500+ hours of experience working on projects 🥇 Huge experience in delivering fantastic mobile applications having more than 1 million downloads. ✅ Technical Skills: ✔ Programming Lang: Swift, SwiftUI, Kotlin, Java, Objective-C, C++, C#, Asp.Net, Python ✔ Software Tools: Xcode, Android Studio, Visual Studio Code, Source Tree, Git, Visio, Sprite Builder, Tiled, Adobe XD, Figma ✔ iOS & Swift Skill: Autolayout, Adaptive Layout, UIKit, SwiftUI, MapKit, ARKit, Core Data, Networking, Combine, Firebase, Codable ✔ Android Skills: Fragments, Intents, Services, Broadcast Receiver, Provider, Material Design, Recycler View, Gradle, Retrofit, Room, Kotlin Coroutines ✔ Libraries & Frameworks: Alamofire, AFNetworking, Retrofit, Picasso, Glide, Firebase, CoreData, Realm, Mapbox, Stripe, PayPal, Braintree, GraphQL, RxJava, RxSwift, SwiftUI, Jetpack Compose ✔ Other: HTML, CSS, XML, JSON, Jscript, TypeScript, Node.js, Express.js, React, Redux, MobX, Angular ✅ Great exposure working with the following industries: ✔ Healthcare and Wellness ✔ Fintech ✔ E-commerce ✔ On-demand services ✔ Social media ✔ Travel and tourism ✔ Gaming ✔ Real Estate ✅ Areas of Interest: Map Kit, AR Kit, Indoor Location, BLE, OpenCV, Core Location, Core Graphics, Call Kit, Chat module with Firebase, Push Kit, VOIP, iCloud, Payment gateway, Apple Pay, In-App Purchase, Machine Learning, Artificial Intelligence, Voice-enabled applications, Wearables, Augmented Reality, Virtual Reality, Blockchain, Cloud Computing, Cybersecurity. Best Regards, Shubham

I help businesses build reliable, scalable applications across mobile, desktop, and cloud using modern .NET technologies. With 15+ years of experience, I’ve delivered production systems used by thousands of users — from cross-platform apps to complex backend services. I focus on clean architecture, performance, and long-term maintainability, and I actively leverage AI tools to accelerate development and improve product quality. What I can help you with • Cross-platform apps (iOS, Android, Windows, macOS) using .NET MAUI / Xamarin • Windows desktop applications (WinUI 3, UWP, WPF) • Backend systems and APIs (ASP.NET Core, REST, SignalR, authentication) • Azure cloud solutions (App Services, Functions, Azure SQL, Storage, CI/CD) • System design and microservices architecture • Integrating third-party APIs and services • Modernizing legacy projects (Xamarin → MAUI, UWP → WinUI, .NET Framework → .NET 8/9) AI-Enhanced Development Experienced in AI-assisted development workflows (“agentic coding”) to deliver faster without sacrificing quality. Skilled in using modern AI tools to improve productivity, code quality, and problem-solving. Hold certifications related to AI and modern development practices Why clients work with me? • I design systems that are scalable and maintainable long-term. • I write clean, well-structured, production-ready code. • I communicate clearly and deliver reliably. • I can take full ownership or integrate seamlessly with your team. If you’re looking for a senior engineer who combines strong fundamentals with modern AI-driven efficiency, I can help you move your project forward quickly and safely. Let’s discuss your project.

I build modern web and mobile applications using .NET / ASP.NET Core, React, and MAUI — delivering robust back-ends, responsive front-ends and smooth cross-platform experiences. With 12+ years of solid experience in backend development, frontend frameworks, database work, and cross-platform app development, I’ve helped businesses deploy reliable solutions that scale. What I bring to the table: ✅ End-to-end ASP.NET Core backend (APIs, business logic, integrations) ✅ Front-end development with React (SPA, responsive UI, client-side logic) ✅ Cross-platform mobile/desktop apps using .NET MAUI — write once, run on multiple platforms ✅ Database design, optimization & migrations (SQL Server / MySQL), including complex data conversions ✅ Full-stack web apps: frontend + backend + database + integrations ✅ Clean, maintainable code with clear communication and timely delivery Whether you need a modern web app, RESTful API backend, or a cross-platform MAUI application, I deliver end-to-end, simplifying your project lifecycle. → C#, .NET 6 / .NET 7 / .NET 8 / .NET 9 → ASP.NET Core / MVC / Web API → React (JS/TS) → .NET MAUI (cross-platform apps) → JavaScript / TypeScript / HTML / CSS / Bootstrap → SQL Server / MySQL / Database Design & Optimization → Entity Framework / ORM → REST API / Backend Integrations → Full-Stack Web Application Development → Cross-Platform Mobile & Desktop App Development → Frontend-Backend Integration → Responsive UI / SPA Development → Code Maintainability & Clean Architecture → Version Control / Git ✅ What I Offer / Services Backend & API development: Build RESTful APIs, business logic, integrations, authentication, and data handling using ASP.NET Core Web front-end development: Create dynamic, responsive SPAs using React (JavaScript or TypeScript), integrating with back-end APIs Cross-platform apps (mobile & desktop): Use .NET MAUI to develop apps that run on Android, iOS, Windows (and other supported platforms) — ideal for maximum reach with minimum effort Database design and optimization: Design normalized schemas, optimize queries, migrate data between SQL Server / MySQL, and ensure efficient data handling Full-stack projects: Handle end-to-end development — from UI to backend to database — so you don’t need to coordinate between multiple freelancers Clean coding, maintainability & documentation: Write structured, readable code with good comments, version control, and documentation for easy future maintenance Let’s collaborate. Share your requirements, and I’ll propose a tailored solution that fits your needs and timeline.

🏆 Top Rated Plus Upwork Freelancer 🕓 100k+ Earning | 300+ Mobile app success stories ⭐ 5-star reviews from satisfied customers 🎯95+% Job Success-oriented work 👉𝐌𝐲 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ➤ Cross-platform ➤ Hybrid: React Native, Flutter (Dart) ➤ iOS: Swift/Objective C ➤ Android: Java/Kotlin ➤ Design: Figma/Sketch/Invision/AdobeXD ➤ Cloud services: Firebase, AWS ➤ Persisting Data: Realm Database, Cloud Firestore, SQLite ➤ IDE: Android Studio, Xcode ➤ Control Versions: GitHub, Bitbucket ➤ Architecture: MVVM, MVP, clean code ➤ Professional software engineering tools and methodologies ➤ Equipped to work with IoT dev kits, prototypes, serial console interfaces, etc. 👉 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝐃𝐨𝐦𝐚𝐢𝐧𝐬 ➤Restaurant Apps (Order Booking & Tracking) ➤Taxi Booking App / Uber clone ➤Social Networking/Dating App ➤Photo/Video Editing ➤GPS ➤Audio Apps (YouTube API) ➤Streaming( audio & video) ➤Cloud-based mobile applications ➤IoT ➤AR ➤Real Estate ➤Ecommerce ➤Telemedicine ➤Banking & Finance ➤Healthcare ➤Travel & Hospitality ➤Automotive ➤Staffing & Recruitment ➤Education 👉𝐈 𝐰𝐢𝐥𝐥 𝐛𝐞 𝐩𝐥𝐞𝐚𝐬𝐞𝐝 𝐭𝐨 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐭𝐡𝐞 𝐟𝐨𝐥𝐥𝐨𝐰𝐢𝐧𝐠 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 (𝐈𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠,𝐛𝐮𝐭 𝐧𝐨𝐭 𝐥𝐢𝐦𝐢𝐭𝐞𝐝) ➤ Most helpful support of the entire application lifecycle (Concept, Design, Test, Release & Support) ➤ Working on customer needs and converting them into technical requirements ➤ Producing fully functional mobile applications with clean code ➤ Designing interfaces for better user experience ➤ Writing unit and UI tests to identify malfunctions ➤ Troubleshooting and debugging to optimize performance ➤ Ensuring the correct linking of the backend and frontend ➤ Implementation of new and further existing apps development ➤ Ensuring new and legacy applications meet quality standards ➤Keeping up to date with the terminology, concepts & best practices for coding mobile apps 👉 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐇𝐨𝐮𝐫𝐬 10:30 AM to 11:00 PM IST ( However, we are available here on Upwork 𝟮𝟰/𝟳 ) 🌻 Thanks for reviewing my Profile Let’s start to build a thrilling Relationship!