⭐ Microsoft Certified Developer ⚡ Senior Full-Stack .NET Core Developer 10+ years | 50+ enterprise systems | API Integration & Azure Expert | C# / ASP.NET Core / SQL Senior Full-Stack Developer with 10+ years of experience delivering 50+ enterprise-level Web Development and Web Application systems using C#, .NET Framework, ASP.NET, ASP.NET Core, ASP.NET MVC, JavaScript, React, Angular, AngularJS, TypeScript, HTML, HTML5, CSS, API, API Development, RESTful API, API Integration, Microsoft SQL Server, PostgreSQL, SQL, Microsoft Azure, Azure DevOps, CI/CD, Amazon Web Service, Node.js, PHP and Python. I build scalable Web Application platforms with clean API Integration, optimized SQL, and production deployments on Microsoft Azure using C#, .NET Core, ASP.NET Core, React, Angular and JavaScript. I also develop AI powered systems using OpenAI API, OpenAI, Claude, Claude API, LangChain, FastAPI, RAG, Artificial Intelligence, Machine Learning and Natural Language Processing. If you need a developer who can build scalable production-ready systems fast let’s talk. I have built 100+ API Integration and API Development solutions using C#, .NET Core, .NET Framework, ASP.NET, ASP.NET Core, ASP.NET MVC and RESTful API architecture, integrating systems across Microsoft Azure, Azure DevOps, CI/CD pipelines and Amazon Web Service. I have implemented 70+ automation workflows using API Integration, Node.js, Python, FastAPI and SQL-based processing across Microsoft SQL Server and PostgreSQL environments. I have delivered 50+ Web Application systems including SaaS platforms, internal tools, dashboards and integration-heavy solutions using C#, ASP.NET Core, .NET Core, JavaScript, React, Angular, AngularJS, TypeScript, SQL, Microsoft SQL Server, PostgreSQL and API Integration deployed on Microsoft Azure and Amazon Web Service. My focus is combining backend architecture with modern Web Development and Web Design for scalable systems. ⚡ What I Build 🔹 Web Application systems processing 100k+ API requests daily using C#, ASP.NET Core, RESTful API, API Development, Microsoft SQL Server, PostgreSQL and SQL optimization 🔹 Integration-heavy platforms using C#, .NET Framework, ASP.NET MVC, ASP.NET Core, API Integration, RESTful API and Node.js connected to CRMs, SaaS tools and external APIs 🔹 Cloud-based systems deployed on Microsoft Azure, Azure DevOps, CI/CD and Amazon Web Service with scalable backend architecture 🔹 Frontend interfaces using JavaScript, React, Angular, AngularJS, TypeScript, HTML, HTML5 and CSS with responsive Web Design 🔹 AI powered features using OpenAI API, OpenAI, Claude, Claude API, LangChain, FastAPI, RAG, Artificial Intelligence, Machine Learning and Natural Language Processing integrated into existing Web Application platforms ⚡ What Makes Me Different Most developers build features. I build scalable systems. As a Senior Full Stack Developer, I focus on: 🔹 API Development and RESTful API architecture using C#, .NET Core, ASP.NET Core and ASP.NET MVC 🔹 Complex API Integration across enterprise systems using Microsoft Azure and Azure DevOps 🔹 High-performance Microsoft SQL Server, PostgreSQL and SQL optimization 🔹 Cloud-native deployment using Microsoft Azure, Azure DevOps, CI/CD and Amazon Web Service 🔹 Full-stack Web Development using JavaScript, React, Angular, AngularJS, TypeScript, HTML, HTML5 and CSS 🔹 AI powered automation, ai agent workflows and AI Integration using OpenAI API, OpenAI, Claude, Claude API, LangChain and FastAPI I design systems where C#, ASP.NET Core, .NET Core, Microsoft SQL Server, PostgreSQL, SQL, React, Angular and Microsoft Azure work as a unified architecture. My focus is production-grade Web Application systems with clean API Integration, scalable infrastructure and maintainable backend architecture built with C#, .NET Framework, ASP.NET, ASP.NET Core and ASP.NET MVC. ⚡ Core Stack C#, .NET Core, .NET Framework, ASP.NET, ASP.NET Core, ASP.NET MVC, JavaScript, React, Angular, AngularJS, TypeScript, Node.js, PHP, Python, HTML, HTML5, CSS, SQL, Microsoft SQL Server, PostgreSQL, Microsoft Azure, Azure DevOps, CI/CD, Amazon Web Service, API, API Development, RESTful API, API Integration, Web Development, Web Application, Web Design, OpenAI API, OpenAI, Claude, Claude API, LangChain, FastAPI, ai agent, ai automation, ai powered systems, RAG, Artificial Intelligence, Machine Learning, Natural Language Processing. I am currently available for Web Development, API Development, API Integration, AI Integration, ai automation and enterprise .NET development using C#, ASP.NET Core, .NET Core, Microsoft SQL Server, PostgreSQL, Microsoft Azure, React and Angular.

As an Electrical/Electronics Engineering graduate and passionate IoT/AI enthusiast, I bring nearly seven years of hands-on experience in embedded systems, Arduino, ESP, and sensors. Throughout my career, I have adeptly coded microcontrollers, including Arduinos, ESP Family, STM32/GD32, and Raspberry Pi, seamlessly integrating them with various hardware modules such as RFID, GSM, Bluetooth, GPS, and LCDs. I have spearheaded core electrical engineering projects leveraging advanced machine learning algorithms like Decision Trees and Clustering for system optimization and efficient design. My proficiency extends across programming languages including C/C++, Python, and MATLAB, enabling me to tackle diverse challenges easily. Additionally, my expertise encompasses a wide array of domains ranging from probability and statistics to signal analysis, digital logic design, power system analysis, and more. I boast strong proficiency in MS Office tools, leveraging them adeptly for comprehensive project documentation. Notable projects in my portfolio include: - Disaster minimization through Home automation - Efficient islanding detection techniques - Clustering analysis for power grids - WiFi-based relay control system - Client-server message exchange utilizing the HTTPS button - MQTT pump controller implementation - Energy meter data logging solutions - Automatic flushing system design for settling basins With a blend of theoretical knowledge and practical skills, I am poised to deliver innovative solutions and drive excellence in the field of embedded systems and IoT.

35 years of experience in software engineering complemented by solid knowledge of computer science, mathematics and electrical engineering.

✅C++ for Linux, macOS, Windows, iOS, Android, WASM, Nodejs addons, Python, microcontrollers ✅Nvidia Jetson Orin, Orange Pi 5 with AI solutions based on neural networks and OpenCV ✅High level review sources ✅Help with architecture and UML design ✅Help with schematic and PCB Hardware design ✅AI integration of any famous library to embedded solution ✅Help with production PCB on JLCPCB and PCBWay

* Over 15 years of hands-on experience in leading a team of software developers. * Extensive experience in developing mobile, desktop, web, blockchain, IoT, and corporate solutions. * Expert knowledge of Object-Oriented Programming. * Expert knowledge in cross-platform software development for mobile (Android, iOS, WebOS, Tizen) and desktop operating systems (Windows, Linux, macOS) using C++ with wxWidgets, and C# with Xamarin. * Proven experience in successfully managing Blockchain startups. * 20 years of experience in software development. * wxWidgets Technology Evangelist in Eastern Europe.

I am a Full Stack Developer and expert in Software and Web Development using .Net framework, asp.net, MVC C#. I am Working in these technologies since 2014. Let me lead on your projects to complete in a time manner. Best Fahad Usman Meer Senior Software Engineer

𝐈’𝐦 𝐚 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 .𝐍𝐄𝐓 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬. I have worked extensively in domains such as Healthcare, Education, Job portals, Finance, Hospitality, ERP, Social Networking, Automobile, Home Care and Custom development. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐎𝐟𝐟𝐞𝐫𝐞𝐝: 🌐 Full Stack Web Development 📱 Responsive Web Design 💡 Custom Web Application Development ✅ Software Development & Maintenance services 🔧 API Development and Integration 🔒 Database Management 🚀 Deployment and Optimization ◆ ERP Software development and maintenance ---------------------------------------------------------------------------------------------------------------------- → 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐈𝐄𝐒 I work on: 🎯 [ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬]: DOT NET Development ( ASP.NET Core, ASP.NET MVC, ASP.NET ZERO, ASP.NET Zero Boilerplate, Webforms ), MVC Razor Pages, C#, Vb, LINQ, Entity Framework, Dapper, Linq2db 🎯 [ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 ]: Microsoft SQL Server, Azure SQL, MySQL, Azure Cosmos DB, MongoDB, Postgres, Google firebase 🎯 [ 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐔𝐈 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤 ]: Angular framework, React.js, Vue.js, JavaScript, jQuery, TypeScript, Next.js, HTML5, CSS3, Bootstrap, 🎯 [ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 ]: HTML, HTML5, CSS, CSS3, SASS, LESS, Bootstrap, Material Design, Tailwind CSS, Kendo UI, Prime Ng, Synfusion, jQuery Datatable 🎯 [ 𝐂𝐥𝐨𝐮𝐝 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 ] : Azure, AWS 🎯 [ 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 ] : Domain driven design (ABP.io), N-layered, 3-layered, MVC architecture 🎯 [ 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐌𝐞𝐭𝐡𝐨𝐝𝐨𝐥𝐨𝐠𝐢𝐞𝐬 ]: Agile, Scrum, Test-Driven 🎯 [ 𝐓𝐨𝐨𝐥𝐬 ]: Visual Studio, Visual Studio Code, Azure DevOps, Agile, TFS, GitHub, JIRA, Bitbucket, Git, Telerik, DevExpress, Kendo UI 🏆 𝐑𝐞𝐚𝐬𝐨𝐧 𝐭𝐨 𝐇𝐢𝐫𝐞 𝐦𝐞! ⚈ 1 Year Support After Delivery ⚈ 24x7 always Tech Support in Upwork. ⚈ Secure Source code at GitHub, Bitbucket, TFS, SVN ⚈ Get real-time project tracking with Azure DevOps, Asana, JIRA, Zoho I am ready for my clients with entire development cycle starting from requirements gathering, application front-end and back-end development. I possess excellent communication skills and can liaise effectively with both clients and work colleagues. Other strong points include an ability to work as part of a team or individually, multi-task, prioritize and work to deadlines under pressure. Let's Connect!

Your project will be built with robust, scalable solutions using: - React & JavaScript - C# / .NET - SQL Server - Entity Framework I believe great development isn't just about code — it's about communication. I take the time to fully understand your requirements, keep you updated throughout the project, and deliver work with genuine care and attention to detail. If you're looking for a developer who treats your project like their own, let's talk. Send me a message and let's discuss how I can help bring your vision to life.

🏆 Top Rated 👍 100% Job Success 😄 Long List of Happy Clients ⏳ Fast Turnaround 📞 Excellent Communication Full Stack .Net Developer with 15+ years experience in the Healthcare domain with a special interest in HIPPA and Interoperability. I have expert knowledge of information messaging standards (I.e. HL7/FHIR/X12 and middle-ware principles and concepts (i.e. APIs, REST, WSDL, SOAP, Web Services, etc.) AI Chatbots for healthcare (patient support, triage) LLM integrations (GPT, Claude) Medical data summarisation (reports, notes) AI-powered EMR automation Voice → text medical transcription (AI) AI agents for clinics (appointments, follow-ups) My Expertise • Web & Mobile Solution • Telehealth/Telemedicine Virtual Appointment Booking Solutions & mHealth Apps • EMR, EHR, PHI, Medical Billing Solutions for Patient Healthcare/Medical Records • HealthKit Integration for Fitness Apps • Healthcare device and smartwatch integration for vitals extraction • Healthcare Marketplace Management Solutions • Doctor-patient apps and Websites • Medical Job Portals • Staff Management Software, and more! • Chat-bot, video call, SMS, email service integration  Healthcare Consulting & Subject Matter Expertise: • HIPAA Compliance & Standards • HL7 V2, HL7 FHIR, SMART on FHIR, and NCPDP Standards • EHR & EMR Integration (EPIC, Cerner) • Healthcare Device & HealthKit Integration • Consulting on Telemedicine, EMR/EHR, HL7, FHIR, EDI, HIE, CCDA, HIPAA, Mirth Connect, Billing, Benefit Plan Management, Eligibility Verification, Claim Scrubbing • Start-Up and Large Organization Consulting for HIPAA Compliance • Security Risk Assessment and Remediation for Healthcare Applications • Mirth Connect Configuration and Channel Customization • Mirth Connect-Based FHIR Integration • Lab Integrations (Uni-Directional, Bi-Directional) • Integration with PopHealth, Epic, Cerner • Billing Management and EDI Processing Systems • DICOM Viewer & PACS Solutions Technologies: .Net Framework, .Net Core, C#, ASP.Net MVC/WebAPI2/WebForms, React, Redux, Node Js, REACT, Angular,, WinForms, WPF, WinRT/WinJS, Windows Phone/Xamarin, Entities Framework/ADO.NET, MS SQL Server, Cloud Server like AWS, Azure & GC HIPAA Security Expert doing security assessment, identifying PHI, looking for HIPAA compliance, complying HITRUST requirements, Involved in auditing, reviewing BAA with HIPAA hosting provider. I have also updated with emerging technologies like AI, chatbot integration, and process automation. Our Global Impact: I've proven my healthcare domain expertise across the US, Canada, Australia, Europe, South America, and the UAE healthcare industries. Let's connect and transform your vision into a reality! Add value to your dream product with our expertise. Contact us today!

I’m a senior software developer from Portugal with more than 20 years of experience building commercial desktop and mobile applications. I help teams build, stabilize, refactor, and extend products that involve real technical complexity. My work is focused on desktop and mobile software where senior technical judgment matters: Qt/C++ applications, native iOS and Android apps, performance-sensitive features, media and audio/video pipelines, computer vision, hardware integration, OS-level behavior, and long-term maintainability. I have worked on commercial products used by real customers, including projects such as Rocketbook - Document Scanning, Triller - Music Video Social Network, ROVR Radio - Audio Production & Dashboard, Toby - AI Real-Time Audio Translation, iContact - Camera Widget, VideoShop - Video Composition, iGreet - Augmented Reality Greeting Cards, LeanStreamer - Multiple Audio Encoding Streaming Tool, BigRoom - Automated AI Editor, and other desktop and mobile applications that required reliable implementation and careful technical decision-making. Clients usually hire me when they need help with: • building a desktop or mobile product properly from the ground up • refactoring an existing codebase without unnecessary rewrite risk • solving platform-specific issues that are blocking progress or release • implementing complex native features involving camera, audio, video, files, hardware, or OS APIs • improving architecture, maintainability, performance, and stability • adding senior technical depth to an existing team or codebase My core expertise includes Qt/C++, desktop software, native iOS and Android development, software architecture, refactoring, performance optimization, media processing, computer vision, and hardware or platform-level integration. I’m especially well suited for products that already exist and now need to be improved carefully. That may mean stabilizing a codebase, modernizing architecture, solving difficult technical issues, or extending the product in a way that remains clean and maintainable. I care about building the right foundation early, keeping the codebase understandable, and making technical decisions that still make sense in the long run. If your product already exists and needs senior technical help to move forward safely, I’d be glad to discuss it.