Hire the Best Universal Windows Platform (UWP) Developers

Available to start immediately. I build and fix real .NET & C# software. Click on Invite button to start conversation I’m a .NET Developer and C# Developer with 13+ years of experience working on production systems built in C#/.NET. Most of my work is focused on helping teams make their existing software more stable, scalable, and easier to evolve without risky rewrites. I’ve worked in long-term roles as a C#/.NET developer, often joining projects where the codebase already exists and needs structure, performance improvements, or careful modernization. 🧠 How clients usually come to me Very often, teams reach out to me as a .NET developer when they already have a product written in C#/.NET, but something isn’t working as it should. Changes are slow, bugs appear in unexpected places, or the architecture feels fragile. In those cases, I step in as a C# .NET Developer who understands how real systems grow over time and how to improve them without breaking production. Depending on the scope, I work either as a backend developer focused on logic and performance, or as a .NET Full Stack Developer when both backend and UI decisions need to be handled together. ⚙️ What I do in real projects Day to day, my work as a .NET Developer is very practical. I write and refactor C#/.NET, clean up .NET architecture, improve async flows, and make sure the application behaves predictably in production. In many projects, this naturally turns into .NET full stack work handling backend services, APIs, and UI integration where I step in as a .NET Full Stack Developer. When teams want a modern .NET Full Stack direction without splitting the codebase, I build new features or full applications using .NET MAUI/WPF/WinForms. I’ve worked with .NET apps both for new products and for migrations from older stacks like, where stability matters more than speed. 🧩 Types of systems I’ve worked on Over the years, I’ve worked as a .NET Developer, across different environments: 💻 Desktop software written in C#/.NET 🌐 Web platforms where I worked as a full stack developer on .NET backends 📱 Cross-platform apps built with .NET MAUI (Windows & Android only) 🧱 Larger products that required a true full stack developer approach 🔗 Mixed systems where .NET AI integration was part of the stack 🎮 Internal tools and simulators developed with C# 🤖 Careful use of .NET AI where it actually added value In several projects, I worked in React .NET setups, connecting React frontends to .NET backends while keeping responsibilities clean and clear. 🛠️ How I work with teams and data I’m comfortable joining existing teams and reading unfamiliar C#/.NET codebases. I focus first on understanding why decisions were made, then improving things step by step. I regularly work with SQL server, collaborate with Azure Data Engineer roles, and support data-heavy systems where performance & reliability are critical. This mix of responsibilities often places me in a .NET Full Stack Developer role even when the original task starts as pure backend work. 🛠️ Tech Stack .NET Framework, .NET 6 / 8 / 9 / 10 App Development - WPF, WinForms, WinUI, Blazor, .NET MAUI, MVVM Concurrency & Performance - Multithreading, async/await, Task Parallel Library Hardware & Protocols - Serial, Bluetooth LE, TCP/IP, UDP, RS232, RS422 Architecture & Quality - Clean Architecture, OOP, refactoring, performance tuning Security & Testing - Unit testing, Polaris, Coverity, SAST, DAST, threat modeling Data & Cloud - SQL Server, Azure Tooling - Visual Studio, VS Code, GitHub, GitHub Actions, Docker ✅ Why clients choose to work with me ✨ I think like a long-term .NET Developer, not a short-term task runner ✨ I write C# code that other C# developers can actually maintain ✨ I’m comfortable owning systems as a .NET Full Stack Developer ✨ I communicate clearly and avoid surprises ✨ I leave .NET full stack codebases cleaner and more stable than I found them 📌 Availability ✅ Available now 🌍 Remote-only ⏱️ Open to long-term collaboration If you’re looking for a .NET Developer, who can step into an existing system and improve it safely let’s chat. 👉 Send a message and we’ll review your setup together.

I build modern, scalable, and business-focused software solutions across Web, Mobile, Desktop, and Backend systems using the Microsoft ecosystem. From elegant user experiences to reliable back-end architecture, I help startups, businesses, and growing products transform ideas into production-ready applications that are fast, maintainable, and built for long-term growth. Whether you need a custom platform, API integration, business portal, CMS website, enterprise dashboard, or cross-platform application — I focus on delivering software that solves real business problems. 🎯 Core Expertise 🔹 C# .NET Development 🔹 ASP.NET Core Web Applications 🔹 RESTful API Development 🔹 Umbraco CMS Development & Customization 🔹 .NET MAUI Cross-Platform Applications 🔹 WPF Desktop Applications 🔹 MVVM Architecture 🔹 Entity Framework Core 🔹 SQL Server & Database Design 🔹 Azure Cloud Solutions 🔹 Authentication & Authorization 🔹 Microservices Architecture 🔹 Third-Party API Integration 🔹 Performance Optimization 🔹 Clean Architecture & SOLID Principles 💻 DEVELOPMENT STACK 🔷 Languages ✔ C# ✔ SQL ✔ JavaScript ✔ TypeScript ✔ HTML5 / CSS3 ✔ XAML 🔷 Frameworks & Platforms ⚙ ASP.NET Core ⚙ .NET 5 / .NET 6 / .NET 8 ⚙ WPF ⚙ WinForms ⚙ .NET MAUI ⚙ Umbraco CMS ⚙ Entity Framework Core 🔷 Front-End 🎨 Razor Pages 🎨 Blazor 🎨 Angular 🎨 Vue.js 🎨 Bootstrap 🎨 Responsive UI Design 🔷 Databases 🗄 SQL Server 🗄 PostgreSQL 🗄 MySQL 🗄 SQLite 🔷 Tools 🛠 Visual Studio 🛠 Git 🛠 GitHub 🛠 Azure DevOps 🛠 Postman 🛠 Docker ☁️ Cloud & DevOps 🔸 Azure App Services 🔸 Azure Storage 🔸 Azure Functions 🔸 Azure SQL Database 🔸 Azure Key Vault 🔸 CI/CD Pipelines 🔸 GitHub Actions 🔸 Azure DevOps Pipelines 🔸 Docker Containerization 🔸 Automated Deployments 🔸 Monitoring & Logging 🔐 Security & Authentication ✔️ ASP.NET Identity ✔️ JWT Authentication ✔️ OAuth 2.0 ✔️ Role-Based Access Control ✔️ Secure API Architecture ✔️ Data Protection & Encryption ⚙️ Solutions I Build ✅ Enterprise Web Applications ✅ SaaS Platforms ✅ Custom Business Management Systems ✅ CRM & ERP Solutions ✅ REST APIs & Backend Services ✅ Mobile Applications (.NET MAUI) ✅ Desktop Applications (WPF) ✅ CMS Platforms (Umbraco) ✅ E-Commerce Integrations ✅ Real-Time Applications ✅ Reporting & Analytics Systems ✅ Legacy System Modernization 🚀 Professional Strengths 💠 Full-Stack .NET Expertise 💠 Strong Software Architecture Skills 💠 Clean & Maintainable Code 💠 Business-Oriented Development 💠 Fast Learning & Problem Solving 💠 Excellent Communication 💠 Reliable Delivery & Long-Term Support 💠 Independent Freelancer — No Agency 💎 WHY CLIENTS WORK WITH ME ⭐ Business-Oriented Development ⭐ Production-Ready Solutions ⭐ Long-Term Maintainability ⭐ Scalable Architecture ⭐ Transparent Communication ⭐ Reliable Deadlines ⭐ Quality-First Development 🔑 RELEVANT KEYWORDS C# Developer, .NET Developer, ASP.NET Core, .NET MAUI, WPF Developer, Backend Developer, API Developer, REST API, Entity Framework Core, SQL Server, Azure Developer, Cloud Solutions, Umbraco Developer, CMS Development, Enterprise Software Development, Cross-Platform Mobile Development, Desktop Application Development, SaaS Development, Web Application Development, Microservices, Clean Architecture, Software Architecture, Full Stack .NET Developer. 🔒 I’m a passionate, independent developer, not an agency. 🕒 Available 40+ hours/week, flexible across time zones. 🌍 Let's build something exceptional together! 💪 📩 Click "Invite" or "Message" and let's discuss how I can help bring your project to life. Your idea + my expertise = success. 🚀

I help individuals, startups, SMBs, and enterprises build reliable, scalable, and user-friendly .NET applications. With 12+ years of experience in custom software development, I specialize in transforming ideas into high-performing desktop, web, and mobile solutions that drive measurable business results. ➜ 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐟𝐨𝐫 𝐘𝐨𝐮 You’ll get more than just coding support — I ensure your software is: • Reliable & Scalable → Built on robust .NET architecture. • User-Friendly → Clean UI/UX for smooth adoption. • Future-Proof → Modern technologies and maintainable code. • On-Time → Agile approach with frequent updates and demos. ➜ 𝐌𝐲 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 • Desktop Apps: WPF, WinUI 3, UWP • Mobile Apps: Xamarin, MAUI • Backend & Frameworks: .NET Core, .NET 5/6/8, .NET Framework (3.5+) • Architectures: MVVM, MVC, PRISM, Singleton, n-Tier, Dependency Injection • Databases: SQL Server, SQLite, MySQL, Oracle • Integrations: Google APIs, Social APIs (Facebook, Twitter, LinkedIn) • UI/Controls: DevExpress, SyncFusion, Telerik ➜ 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 • Startups looking to launch MVPs • SMEs modernizing legacy systems • Enterprises needing robust desktop, web, or mobile apps • B2B & B2C businesses seeking tailored software solutions ➜ 𝐌𝐲 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 1. Understand your goals & requirements 2. Propose the most effective technical approach 3. Share similar past work & align expectations 4. Start with a pilot milestone (risk-free) 5. Provide regular updates, demos, and post-deployment support ➜ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 • Top Rated Plus on Upwork with 100% Job Success Score • Client-Centric Approach: clear communication, flexible engagement • Confidentiality Assured: NDA & secure contracts • Proven Track Record: worked with startups and global enterprises • Easy Collaboration: available via Skype, Teams, Slack, Zoom I’m not just a developer—I’m a partner in your project’s success. My commitment to understanding your goals and providing ongoing support reflects my dedication to achieving the best outcomes for you. Let’s work together to create something extraordinary. Updating an existing app, or building something from the ground up — drop me a message, it is free to talk it over.

🟢 𝐀𝐕𝐀𝐈𝐋𝐀𝐁𝐋𝐄 𝐓𝐎𝐃𝐀𝐘 Outdated systems slowing you down? I help teams 𝗺𝗼𝗱𝗲𝗿𝗻𝗶𝘇𝗲 𝗹𝗲𝗴𝗮𝗰𝘆 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀, 𝗯𝘂𝗶𝗹𝗱 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, 𝗮𝗻𝗱 𝗹𝗲𝘃𝗲𝗿𝗮𝗴𝗲 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁’𝘀 𝗳𝘂𝗹𝗹 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘀𝘁𝗮𝗰𝗸 I’m Ishrar, 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 & 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟭𝟲 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 in designing, developing, and deploying both desktop and web applications. Over the years, I’ve delivered everything from enterprise-grade .NET applications to cloud-native Azure solutions, database-driven systems, and modern microservices. ✅ 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 🔹𝗕𝗮𝗰𝗸𝗲𝗻𝗱: .𝗡𝗘𝗧 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸, .NET Core, ASP.NET MVC, C#, VB.NET, REST & SOAP APIs 🔹𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: Razor, WinForms, responsive & multithreaded applications 🔹𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Microsoft Azure (Functions, SQL Server, CosmosDB, Vault, AD, Microservices, EntraID), CI/CD 🔹𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀:SQL Server, MySQL, MongoDB, CosmosDB 🔹𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Internal & external services, enterprise systems 🏆𝐏𝐫𝐨𝐯𝐞𝐧 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 🔹Designed and deployed scalable enterprise applications serving thousands of users 🔹Optimized database systems for performance, reliability, and scalability 🔹Integrated complex internal/external services (REST/SOAP) seamlessly 🔹Helped businesses transition from legacy systems to cloud-first architectures 💬 Let’s connect! Share your project goals, and I’ll provide a few tailored solution ideas or run a quick audit of your current stack—no strings attached.

25+ years in Software Development Available for 40-60 hrs./wk. Excellent references from CEOs of the companies. Bringing products to market: inception, spec, architecture, implementation, testing. Seeking for software development projects in the following areas on Windows Platforms: - Recent successful GPT-3/3.5/4 API experience with C#, DALL-E interface, and OpenAI Whisper. - Experience of developing RAG Web Service enabling chatting with private corpus of documents, based on Azure Cognitive Search SDK, Azure OpenAI API and Azure Cosmos Vector DB for vector, hybrid, and semantic search. Segmenting Word/PDF/Excel/CSV/Text documents, embeddings, and ingestion. - Worked with ML.NET in VSTO Outlook Add-In environment for email classification. - Experience with Text-To-Speech and Speech-To-Text using AWS, Azure, Google, Eleven Labs, and other vendors. Experience with Google Voice Services, including Diarization (recognition of different speakers and designation in the transcript), and Medical Transcription. Able to produce STS (Speech-to-Speech) application - interacting with ChatGPT over microphone and speakers. Recent Development Experience of TTS with OpenAI. - AI Training of basic GPT models using fine-tuning, and embedding techniques with vector databases, such as Pinecone, Qdrant, and Milvus APIs. - OpenAI Completion and Embeddings API, GPT-3/3.5/4, Whisper API for Transcribing and Translation - Azure Semantic Kernel, Azure Data Explorer (ADX), Azure Blob Storage, Azure Analytical Services. - AWS Text-To-Speech, AWS Storage - Web Services: REST-API, ASP.NET Framework and Core, WCF Web Services, Microservices - Azure Active Directory Authentication from Desktop Applications in C# - Desktop applications with C#/.NET Framework/.NET Core, WinForms, WPF, DevExpress - Microsoft Office VSTO/COM Add-Ins for Outlook, Excel, Word, and PowerPoint - Client/Server Systems: Sockets and high-level protocols, such as HTTP, FTP, MQTT - Windows Services - Microsoft Dynamics 365 - Hardware Interface: USB/RS232/RS485 Technologies and Frameworks: - Languages: C#, C/C++, Python, MicroPython, XML, JSON - Databases: SQL, SQLite, MySQL, Entity Framework 6/Core and LINQ. - Networking: Sockets (.NET and Winsock), REST API, WCF, HTTP, FTP, MQTT, packet-level TCP/IP, - Serial (RS232/RS485), MODBUS. - IDE: Visual Studio 2010 through 2022 - Office Add-Ins: VSTO Add-ins for Outlook, Excel, Word, PowerPoint. Add-In Express Framework. - VOIP: PJ SIP Stack with DBUS, Asterisk, Open Phone Abstract Library (OPAL) - Active Directory/LDAP/ADSI - Monte Carlo Simulations in C# - Linux: C/C++ and Python with MQTT Development on Ubuntu and Raspbian. - AES256 Encryption, Monte-Carlo Simulations, SHA256, PGP/GnuPG PKI (Public Key Infrastructure) Application binaries signing (Authenticode), Security Certificate generation in code based on CA. - Installers with Advanced Installer, Deployment strategies. - Product Licensing

Hello, Thank for visiting my profile. I'm a software engineer with 8 years of experience in developing Desktop Application. I have worked on many projects in this field and got success. I am good at C/C++, Win32, MFC, Qt, C# WPF, Winform, python, Java core and proficient in Visual Studio, Eclipse, Qt Creator. I deeply understand OOP design and GoF design patterns. I am familiar with both Window and Linux. I very happy to cooperate with you. Hai Nguyen.