Hire the Best XAML Specialists

Hi, I'm David, a seasoned mobile app developer with extensive experience across diverse client bases, from individuals to Fortune 100 companies. Specializing in Xamarin, I am known for my unwavering dedication and ability to deliver under pressure, making me the go-to developer for mission-critical projects and tight deadlines. My portfolio showcases my proven track record of successful delivery.

Greetings! If you are searching for a skilled .NET developer, your search ends here! My name is Abdella Solomon, and I am delighted to offer my expertise. With over 3 years of experience working with .NET and C#, I have developed a deep understanding while working in backend development and desktop app development. I am confident that my skills and knowledge will enable me to create an exceptional solution to meet your needs. Let's work together to bring your vision to life! My expertise includes: ✔️Backend development with .NET ✔️ASP.NET Core, ASP.NET Web API and Minimal APIs ✔️Entity Framework, Entity Framework Core ✔️Databases: MS SQL, MySQL, MongoDB, PostgreSQL ✔️Avalonia, WPF ✔️Azure services ✔️Database development and integration ✔️REST APIs, GraphQL, and RPCs development ✔️Cross-platform desktop app development with Avalonia ✔️Automation and scripting ✔️And more... WHY CHOOSE ME? ✨ Timely Delivery ✨ Commitment to Quality ✨ Latest Industry-Standard Code Practice ✨ Exceptional Communication Skills ✨ Adaptable Learner ✨ Strong Collaborator I am confident my work will meet and exceed your expectations, leaving you completely satisfied.

Specializations: ✅ AI-Powered Bots / Agents ✅ Legacy .NET Modernization ✅ Cloud-Ready MVC/Azure Apps ✨ 100% Job Success | ✨ Top Rated | ✨ 12+ Years’ Experience | ✨ Microsoft-Certified Engineer 🚀 AI Chatbots + Legacy .NET Modernization + Azure MVC Transformation — I Do It All Is your business stuck on legacy WinForms, VB.NET, or old ASP.NET apps — and looking to move fast into modern, cloud-ready, AI-powered solutions? I’m Kavitha, a Microsoft-certified .NET expert. Intelligent platforms with: WPF / .NET 6+ / Azure AI-Powered Voice Bots Speech and Cognitive Services Modern MVC Web Apps 💡 What I Do Best 🔧 Legacy .NET Modernization WinForms ➤ WPF (MVVM, XAML) VB.NET ➤ Modern C# ASP.NET ➤ .NET Core MVC Tech debt cleanup, modular redesign, UX/UI refresh 🧠 AI Integration for Support Automation Azure AI: Speech-to-Text, Text-to-Speech, Voice Cloning Build bots that speak, listen, and understand customers Perfect for regulated industries (Finance, Healthcare, Insurance) ☁️ Cloud-Ready MVC & Azure Apps Azure SQL, Blob Storage, Data Factory GitHub Actions, Azure Pipelines for CI/CD Application Insights for real-time monitoring & logs 📊 Reporting + Data Optimization SSRS upgrade/migration Legacy XML/JSON cleanup SQL to API-first data layers 🛠️ Tools & Technologies C#, .NET Core, ASP.NET MVC, WPF, WinForms, VB.NET Azure AI, Cognitive Services, Azure DevOps, Azure Functions NAudio, Praat, SSRS, SQL Server, MySQL Git, TFS, Bitbucket, Trello, DevExpress, Telerik 🎓 Certifications Microsoft Certified Solution Developer (MCSD) Certified Scrum Master (CSM) 💬 Why Clients Hire Me ✅ 12+ years refactoring legacy codebases ✅ Fluent in both business needs & tech solutions ✅ Fast delivery, crystal-clear communication ✅ Scalable, maintainable results — always production-ready 🔥 Let’s ditch legacy limitations and build something future-proof — with AI, Azure, and modern .NET.

• Software development in C# (.NET Framework, .NET Core, and .NET) with more than 11 years of experience. • Desktop application development in C#, primarily using WPF and WinDev. • Mobile application development using Flutter and Dart with 4 years of experience. • General knowledge of ASP.NET, Blazor, JavaScript, TypeScript, React, jQuery, Python, PHP and PowerShell scripting. • Advanced WPF application development using the MVVM architecture, including advanced Data Binding, creation of complex User Controls, control styling and templating, Dependency Properties, Attached Properties, and the use of components and frameworks such as DevExpress, Prism, Handy Controls, and ModernWPF. Experienced in debugging and visual inspection using Snoop. • Knowledge in Radzen Blazor and MudBlazor frameworks for web applications. • SQL databases: SQL Server, SQLite, PostgreSQL, and MySQL, with 11+ years of experience: Database design and implementation; Performance optimization through indexing and normalization; Stored Procedure design and development; Integration using Entity Framework 6 and Entity Framework Core. • REST API integration, including OpenAI API, Spotify Web API, College Scorecard API, DomainBox API, InternetBs API, Dreamscape Reseller API, and Hexonet API. Also experienced in maintenance, troubleshooting, and enhancements of ASP.NET Web APIs. • Use of AI-assisted development tools to accelerate coding tasks and solve unfamiliar technical challenges, including GitHub Copilot, Codex, ChatGPT, and Gemini. • Advanced querying using LINQ and Lambda Expressions. • Asynchronous programming (async/await), background threading and use of Cancellation Tokens. • Source code management and version control using Git, GitHub, and Azure DevOps. • Implementation of authentication and authorization integrations with BambooHR (Auth0-based). • Processing, serialization, and deserialization of JSON, XML, and CSV data. • Excel (.xlsx) file generation and manipulation using ClosedXML. • Development of Google Chrome extensions using JavaScript. • Implementation of data encryption mechanisms for files and text. • Integration with Active Directory and Azure Active Directory through .NET libraries. • Task automation using Windows Task Scheduler and .NET libraries. • Experience with POS systems and peripheral device integrations with serial port communication (COM). • Previous experience with C++ and the Qt Framework, as well as basic Linux administration and Linux command-line usage. • Use of Adobe Photoshop to assist in application design tasks, including logos, UI mockups, and layout designs. About me: Software developer with over 11 years of experience designing and developing software across multiple programming languages, primarily .NET C#. Experienced in SQL database implementation, software debugging, troubleshooting, quality assurance testing, and technical documentation. Strong analytical and problem-solving skills for identifying and solving complex problems through efficient technological solutions. Committed and passionate about continuous learning, research, and process improvement, with the ability to quickly adapt to new technologies and work environments. Note: Not all projects are in my Portfolio. I mostly worked on private projects so is hard for me to show everything on what I've worked

Hello, I’m Jason Nhien Truong, a Senior Software Engineer and Software Architect with over 20 years of professional experience delivering reliable, maintainable software solutions for businesses across multiple industries. I specialize in C# and .NET development, Windows desktop applications, enterprise web systems, SQL databases, and Azure-based platforms. I help clients modernize legacy systems, stabilize and scale existing products, and build new applications with a strong focus on performance, usability, and long-term maintainability. I work closely with stakeholders to translate business needs into practical, well-structured technical solutions. What I offer Full-stack .NET development I work across the .NET ecosystem, from legacy ASP.NET Web Forms to modern .NET 8 APIs and microservices. I design secure, scalable backend systems with clean architecture and clear separation of concerns. Windows desktop application development I have extensive experience building and maintaining Windows desktop applications using WinForms and WPF, including MVVM-based WPF applications. I focus on responsive UI behavior, clean data binding, maintainable ViewModel design, and user-friendly workflows for business-critical desktop software. Enterprise UI with DevExpress and Telerik I have deep expertise with DevExpress and Telerik controls for WinForms and web applications. I redesign and modernize complex UIs to improve usability, consistency, and performance without breaking existing business logic. Database architecture and optimization Strong experience with SQL Server, PostgreSQL, MySQL, and Azure SQL. I design schemas, optimize queries, and ensure data integrity and stability in production systems. Azure cloud and DevOps Hands-on experience deploying and maintaining applications on Azure, including CI/CD pipelines, containerized services, background processing, and cloud-based integrations. Testing and automation I write unit and integration tests using xUnit and NUnit, and implement automation with Selenium and AutoIt to improve quality and reduce regression risk. Key technical skills Languages and platforms C#, .NET Core, .NET 8, ASP.NET, SQL, JavaScript, HTML, CSS, Python Desktop development WinForms, WPF, MVVM, DevExpress WinForms, Telerik UI Frameworks and tools Entity Framework, LINQ, Docker, Azure DevOps Databases SQL Server, PostgreSQL, MySQL, MongoDB, Azure SQL Cloud and monitoring Azure, Kubernetes, Azure Service Bus, Prometheus, Grafana Architecture Microservices, Clean Architecture, Domain-Driven Design Selected projects Web forecasting application maintenance Maintained and enhanced a legacy ASP.NET Web Forms application using SQL Server 2022 and Telerik UI. Improved UI workflows, business logic, and performance. Betx – cloud-native microservices platform Developed backend microservices using .NET 8 and Web API. Worked on PostgreSQL data modeling, Azure Kubernetes deployment, secure APIs, messaging, and observability with Prometheus and Grafana. Custom ERP system for manufacturing Built a custom ERP system using C# and SQL Server, including workflows, reporting, role-based access, and third-party integrations. Carrier pricing API integration Integrated FedEx and UPS APIs for real-time pricing, data synchronization, and robust error handling with retries and logging. Why work with me I bring deep technical experience, strong ownership, and a business-focused mindset. I communicate clearly, meet commitments, and build software that remains stable and maintainable over time. Availability Open to full-time or part-time engagements. Flexible with time zones for long-term projects. If you’re looking for a senior .NET engineer who can handle both backend systems and Windows desktop applications with confidence, feel free to reach out.

With over a decade of hands-on experience and a Top Rated Plus track record of delivering large-scale enterprise ecosystems, I provide the technical leadership necessary to turn complex business logic into high-performance digital products. My approach combines veteran architectural knowledge with AI-driven development to maximize delivery speed without compromising security or code quality. 📱 Dual-Specialist Mobile Architecture I bridge the gap between native performance and cross-platform efficiency, specializing in the two most powerful frameworks for enterprise apps: .NET MAUI & Xamarin Expert: Industry leader in migrating legacy Xamarin suites to .NET 8/9 MAUI, ensuring native rendering and optimized performance. React Native Specialist: Building highly responsive, scalable mobile interfaces with seamless JavaScript/TypeScript integration and native module hooks. Native Foundations: Deep proficiency in Swift, Objective-C, and Kotlin for specialized low-level hardware integrations. Advanced Features: Complex UI/UX animations, MagStripe/NFC, biometric security, and real-time communication (SignalR/Firebase). 🌐 Web & Cloud Solutions I build robust, high-traffic backends and modern web frontends: Frameworks: ASP.NET Core MVC, Web API, and Blazor Hybrid for sharing code between Web and Mobile. Frontend: Responsive, enterprise-grade architectures using Angular, Bootstrap, and HTML5. E-commerce & CMS: Specialized in custom-built retail platforms and scalable inventory management systems. 🗄️ Database & DevOps Databases: Advanced optimization and performance tuning for MS-SQL, SQLite, Oracle, DB2, and MongoDB. AI-Enhanced Workflow: I leverage GitHub Copilot and Cursor for rapid prototyping and automated refactoring, delivering production-ready code in record time. Professional Versioning: Expert management of Git (GitHub/Azure DevOps/Bitbucket) and TFS workflows. 🏆 Why My Partnership Drives Results: 1. Enterprise-Level Project Recovery I specialize in taking over complex, stalled, or legacy codebases and transforming them into stable, live products. My goal is to reduce your technical debt while accelerating your roadmap. 2. Strategic Solution Consulting I don’t just execute tasks; I act as a technical partner. I provide frequent, transparent communication and proactive architectural advice to ensure your product scales with your business. 3. Quality-First Architecture By strictly following MVVM, SOLID, and Clean Architecture principles, I ensure your application is maintainable, testable, and ready for future upgrades. 4. Global Team Momentum I lead a specialized team of UI/UX and Backend experts, allowing us to handle the full project lifecycle while maintaining 24/7 momentum across international time zones.