Over the last 11 year I have developed a lot of web application using C#, Asp.net, MVC, XML, Rad controls, Entity framework, jQuery, knockout js, angular js, window services, third party tools controls for large-scale business. |====== Skill Set ======| Languages: C#, vb.net Web Platform: ASP.NET, MVC, NodeJS Frameworks: Entity framework, ado.net. Dev Tools: Visual Studio, Visual Studio Code Databases: MSSQLServer MS Azure: Blobe Storage, Search Services, Web App hosting. Third party Tools: Telerik, Krypton, Dev component. Mobile Development: Android,PhoneGap, ionic framework Script/MVVM : jQuery, javascript, TypeScript, knockout js, angular js, Angular, React, Kendo UI framework Version Control: Git, SVN, TFS I have a very high level of skills across a wide range of areas. I will provide many suggestions for ways you could improve your project and will be also able to operate with minimal amounts of guidance!

Senior .NET Developer | ASP.NET MVC & .NET Core Expert | Full-Stack Engineer 🚀 13+ Years of Experience | Scalable Enterprise Solutions | Secure & High-Performance Development I am a highly experienced .NET Developer with 13+ years of expertise in backend, frontend, and full-stack development, specializing in enterprise applications, API development, and cloud solutions. I build scalable, high-performance, and secure applications using the latest .NET technologies. 🔹 Core Skills & Expertise: ✅ .NET & C# Mastery – Extensive experience in .NET Core (versions 1-9), ASP.NET MVC, .NET API, and modern backend development ✅ Security Best Practices – Deep understanding of authentication, authorization, OWASP security standards, and best practices for secure APIs ✅ Database Expert – Skilled in MS SQL, MySQL, MariaDB with hands-on experience in T-SQL, stored procedures, views, cursors, and triggers for handling large-scale databases ✅ UI & Frontend Development – Proficient in Kendo UI, Kendo for MVC, Kendo for .NET Core, DevExpress, DevExpress Reports, Bootstrap ✅ Enterprise-Scale Development – Experienced in building and maintaining distributed systems, microservices, and high-traffic applications ✅ Cloud & DevOps – Expertise in Azure App Services, Azure Functions, CI/CD pipelines, Docker, and cloud-based deployment strategies ✅ Code Quality & Testing – Strong advocate of Test-Driven Development (TDD), unit testing, and software architecture best practices (SOLID, Design Patterns) I have successfully developed secure, high-performance applications across industries such as healthcare, trading, and e-commerce. My ability to analyze existing systems and optimize, refactor, or seamlessly integrate new solutions ensures efficient and maintainable codebases. Let’s collaborate to build cutting-edge, scalable, and secure applications that drive business success! 🚀

🏆 Top Rated Plus (Top 3% Talent) 🏆 2K+ hours on Upwork 🏆 100% Success Rate ✅An expert Full-Stack Developer with 13+ years of experience in C#, ASP, NET Core, MVC, Open AI, Azure, AWS, DevOps, Web Apps, APIs, Frontend, Backend, WPF .NET Core, Web API, MVC JavaScript JQuery, SQL Server, Azure Cloud Services, Microservices, DevOps, and Identity server, etc. ✅ I have worked with enterprise clients on Upwork, and other companies and delivered many projects successfully with 100% client feedback. • Microsoft .NET / .NET Core / C# • Azure Cloud Services / Amazon Web Services (AWS) • ASP.NET MVC, Webforms, WCF and Web API • Implementing Open AI APIs and other AI tools • Azure DevOps, Docker, CI/CD Pipelines, Nginx proxy configs • SQL Server (Major), Oracle, MySQL, PostgreSQL • Some experience with NodeJS (Nest JS framework) and Typescript • Entity Framework and other ORMs • Radis Cache, Key Cloak, Swagger etc. • Advanced SQL Server features like SSIS, Broker Services • JavaScript, jQuery and jQuery UI, Bootstrap, and Angular. • WordPress • Identity Servers, OAuth 2.0 (via JWT access tokens) • Backend APIs using WCF Services, WebAPI, API Gateway, Swagger • WinForms - Windows Forms and WPF • Self-hosted and Windows Services • Software Packaging Tools like. MSI and WiX Installer • Self-hosted and Windows Services • Experience with major APIs i.e. PayPal, Stripe, Apple Pay, Google Pay, Google Maps, etc. • Desktop applications on Winforms and WPF • RDLC, Crystal and Telerik Reports • Git Branching strategies • Payment Gateways i.e. PayPal, Stripe and others • Infragistics, Syncfusion and Telerik Controls for Web & Desktop • Source Control, Project Management, and documentation tools i.e., TFS, • Project Management, and documentation tools TFS, JIRA, Trello, Click Up and Confluence etc. ✅ Expert in Payment Gateways integration ✅ Experienced in leading teams sized 10+ members. ✅ Experienced in requirements analysis and functions/user flow design. ✅ Quick learning, implementation and easy adoption of new technologies Regards, Umar Abbas Senior Software Developer & Architect

🔷 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 🔷 𝟏0+ 𝐘𝐞𝐚𝐫𝐬 𝐎𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 🔷 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐏𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 I help businesses build secure, high-performance .NET applications that scale. From backend architecture to modern frontends, I deliver reliable solutions that are built to last. With over 10+ years of experience as a Full Stack .NET Developer, I’ve worked on SaaS platforms, CMS systems, enterprise applications, and custom business tools. My focus is simple: build clean, scalable systems that solve real business problems — on time and without unnecessary complexity. 💡What I Bring to Your Project - Backend Development – C#, .NET Core, ASP.NET MVC, Web API, Microservices - Frontend Development – React.js, Angular, Next.js, Blazor - Databases – SQL Server, MySQL, AWS RDS - Cloud & DevOps – AWS, Azure - Legacy Modernization – Classic ASP, VB6 - Architecture – Scalable, secure, performance-optimized systems ✅ Why Clients Work With Me - Clear communication and structured development process - Strong focus on performance and maintainability - Full ownership from planning to deployment - Quick turnaround on MVPs and feature validation 📌 Next Step: If you’re looking for a senior developer who understands both business and technology, let’s discuss your project. I’m happy to provide a technical review and suggest the best approach before we begin.

🥇 Top Rated Plus | Senior .NET & Azure Software Engineer 🏆 10+ years of experience with Microsoft Azure 🤓 1 x Microsoft Azure Certified | 3 x MongoDB Certification | 2 x PMI Certification I help tech teams ship high-quality cloud applications faster using .NET, Azure PaaS, microservices, and automated CI/CD pipelines. With 10+ years building mission-critical platforms for finance, healthcare, e-commerce and logistics, I deliver secure, scalable, and maintainable solutions that accelerate business impact. I specialize in crafting scalable, secure, and performance-optimized applications using .NET, Blazor, Azure, AWS, and modern frontend frameworks such as Angular and React. I’ve led architecture and development for Fortune 500 firms and startups alike, delivering robust solutions across logistics, finance, e-commerce, healthcare, and gaming. 🔍 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐫𝐢𝐧𝐠: ✅ Scalable Microservices using the latest .NET version ✅ Blazor & Angular/React for interactive UIs ✅ CI/CD pipelines (GitHub Actions, Jenkins, Azure DevOps) ✅ Cloud-native deployments (Azure | AWS | Docker | Kubernetes) ✅ Real-time systems with Redis, WebSocket, Kafka ✅ Strong debugging, optimization, and code quality focus 📈 𝐑𝐞𝐜𝐞𝐧𝐭 𝐖𝐢𝐧𝐬: - Designed a healthcare practitioner search system scaling across AWS with real-time Elasticsearch - Led logistics platform revamp for a US-based company using .NET 10 + React - Built scalable e-commerce and casino gaming platforms from scratch 🤝 Let’s connect if you're looking for long-term value, high-quality code, and a dedicated partner.

I am a Senior Full Stack & AI Developer with deep expertise across the complete .NET ecosystem, Node.js, Next.js, React, Angular, Blazor, cloud platforms (AWS, Azure, GCP), and AI-powered application development solutions. As a Top Rated Plus freelancer with 8,000+ hours on Upwork and over a decade of hands-on experience, I specialize in building end-to-end software solutions across web, mobile, and desktop platforms. My work focuses on production-grade systems that are scalable, secure, and aligned with real business workflows. I do not build demos. I build systems that businesses rely on. --- My Skills & Expertise Full Stack Application Development I design and develop complete applications from architecture to deployment, covering backend logic, frontend interfaces, APIs, databases, and cloud infrastructure. I take ownership of the full lifecycle rather than isolated tasks. .NET & Microsoft Ecosystem I work across the entire .NET stack to build enterprise-level applications using clean architecture, modular design, and long-term maintainability principles. AI-Powered Application Development I integrate AI directly into applications to enhance automation, decision-making, search, and user interaction (AI used as a functional system component, not a surface feature). AI Agents, Chatbots & RAG Systems I build intelligent agents and conversational systems using Retrieval-Augmented Generation for context-aware responses, internal tools, and customer-facing platforms. Cloud Architecture & DevOps I deploy and manage applications across Azure, AWS, and GCP with a focus on scalability, cost control, security, and production stability. Automation & Workflow Orchestration I automate business processes and AI workflows using modern automation platforms to reduce manual work and improve operational efficiency. Database Design & Data Handling I design efficient, scalable data models and manage structured and unstructured data for high-performance applications. --- Core Technology Stack Backend & Application Frameworks • .NET Framework • .NET Core • ASP .NET • ASP .NET MVC • ASP .NET Web API • Node.js • Next.js • Blazor Server • Blazor WebAssembly • .NET MAUI (cross-platform mobile and desktop apps) • C# (primary language), JavaScript, TypeScript Frontend Technologies • Angular • Blazor • React • HTML, CSS, JavaScript (modern standards and performance-focused UI) AI & Intelligent Systems • OpenAI APIs • AI-powered application development • AI Agents & Chatbots • RAG (Retrieval-Augmented Generation) systems • LangChain • LangGraph • Vector databases • Context-aware automation and intelligent search Cloud Platforms & Infrastructure • Microsoft Azure • Amazon Web Services (AWS) • Google Cloud Platform (GCP) • CI/CD pipelines • Containerized deployments • Cloud security and monitoring Automation & Integration Tools • n8n • Zapier • Microsoft Power Automate • API integrations and system orchestration Databases & Data Storage • SQL Server • MongoDB • Relational and NoSQL database architecture • Performance optimization and data integrity Additional Languages & Tools • JavaScript, TypeScript, Tailwind CSS • Python (for AI, automation, and integrations) --- What I Deliver • End-to-end Web, Mobile, and Desktop Applications • Full Stack .NET Solutions with clean architecture • AI-powered platforms, agents, and chatbots • Cloud-native, scalable applications • Secure APIs and third-party integrations • Database-driven systems built for performance and scale --- I offer free consultation for custom application ideas and enjoy working with founders and teams to refine requirements, design architecture, and turn ideas into production-ready systems. I stand behind my work. If you are not satisfied, I provide a complete money-back guarantee with no questions asked. I am a problem solver and a doer. If you need someone who can take full ownership of your application and deliver results, let’s connect and discuss how to make it happen.

✅ Top-Rated Senior Developer ✅ 100% Job Success Score ✅ Available for part-time, full-time long-term projects on Upwork (up to 40+ hours/week) ✅ Government ID Verified ✅ Professional Experience ✅ Expertise in .NET-based Web Applications, RESTful APIs, SPA architectures, CMS solutions, and enterprise-grade systems I’m a Senior Full-Stack .NET Developer with 6+ years of hands-on experience delivering and optimizing production-ready applications using C#, ASP NET / .NET Core, ABP Framework, and frontend technologies such as Angular, React, and modern JavaScript frameworks. I work across both backend and frontend, focusing on APIs, database design, performance optimization, and building responsive, user-friendly interfaces. What I Help You With - Custom web applications & system upgrades - Secure, efficient API integrations - Performance optimization & code refactoring - Long-term maintenance & scalability improvements Technical Expertise - Backend: C#, ASPNET MVC/Core, Web API, EF/EF Core, ABPio - Frontend: Angular, React, Vue, Blazor WASM, Nextjs, Tailwind, Telerik/Kendo UI - Databases: SQL Server, Azure SQL, MySQL, PostgreSQL, MongoDB - Cloud & Tools: AWS, Azure, Git, Visual Studio, CI/CD - Platforms: Windows Server, Linux, macOS Why Choose Me ✔ Clean, scalable, and maintainable code ✔ Fast delivery without sacrificing quality ✔ Client-focused communication ✔ High-performance, real-world applications ✔ Money-back guarantee & long-term discounts Availability 🕒 Part-time or Full-time (40+ hrs/week) | Ready to start immediately 💬 Response within 1 hour | Flexible time zones 👉 Click “Hire Now” or “Invite to Interview” to get started. Best regards, Le Xuan Thuan

I am web application developer with excellent front-end skills. On the back-end side I have had experience with ASP .NET MVC, C#, Entity Framework, Multi-tier, SQL and I developed several website and application using their such that (personal, news,eCommerce, etc website). On the front-end side, I have had experience with HTML, HTML 5, CSS, CSS3, JS, j-Query, AJAX, JSON, Bootstrap so I have the ability to convert any graphics(PSD, JPEG) to interactive HTML layouts. I used to finish and deliver projects on time, and I take consider to give guarantee until launch and publish your projects.

Senior DevOps Engineer and Solution Architect delivering measurable results on AWS and Azure: 40% lower infrastructure costs, 80% faster deployment velocity, and 99.99% uptime on production workloads. I design and automate scalable cloud platforms using .NET Core, Kubernetes, Terraform, and modern CI/CD pipelines. I partner with companies to transform fragmented codebases into high-performance systems, from initial architecture through global rollout, focused on outcomes that move the bottom line, not just clean code. Cloud Infrastructure & Cost Optimization (AWS, Azure) • Engineered a GitOps-driven AWS pipeline with Terraform, reducing infrastructure provisioning time by 80% • Reduced Amazon EC2 costs by 35% through intelligent auto-scaling and instance optimization • Architected a serverless AWS + Amazon S3 solution processing 10M+ daily requests at 99.99% uptime • Built a high-throughput event streaming architecture with Docker and Apache Kafka, handling 5TB of daily data ingestion without latency spikes .NET Development & Application Architecture • Re-platformed a legacy monolith into .NET Core microservices on Kubernetes, cutting rollback windows by 70% • Designed a multi-tenant ASP.NET Core + React application supporting 200,000+ concurrent users • Developed custom C# middleware that optimized high-volume API traffic, reducing database load by 25% • Migrated a critical financial system to the latest ASP.NET version, cutting technical debt by 60% and improving API response times by 200ms CI/CD, DevOps Automation & Linux Administration • Built robust CI/CD pipelines in Azure DevOps and GitLab, tripling release frequency on key products • Automated compliance audits using Python and Terraform, saving 90% of manual audit prep time • Orchestrated a Linux System Administration overhaul, hardening network security across 500+ EC2 instances Security, Compliance & Data • Implemented a Zero-Trust security mesh across Azure and AWS, preventing lateral movement attacks on sensitive fintech data • Delivered PostgreSQL-backed APIs with full HIPAA and PCI-DSS compliance for a leading healthcare provider Core Skills: AWS, Microsoft Azure, DevOps, Solution Architecture, Cloud Engineering, .NET Core, ASP.NET, C#, JavaScript, React, Full Stack Development, Kubernetes, Docker, Terraform, GitOps, CI/CD, Azure DevOps, GitLab, Apache Kafka, PostgreSQL, Amazon S3, Amazon EC2, Linux System Administration, Python, Microservices, Serverless, Zero-Trust Security, HIPAA, PCI-DSS, Deployment Automation, Cloud Migration. Let's schedule a call to map your objectives to a clear technical roadmap.

Senior .NET Engineer with 16 years of experience building and fixing complex web applications, specially integration-heavy systems. I mostly work on systems where things are already in production but difficult to change — involving APIs, third-party integrations, SFTP/EDI flows and legacy codebases. What I can help with: • Stabilizing and fixing broken or unreliable integrations (APIs, file-based, external systems) • Refactoring legacy .NET applications without breaking existing functionality • Designing clean backend architecture and service layers • Improving logging, debugging and overall system visibility • Removing or replacing costly/rigid third-party dependencies Tech stack: C#, ASP.NET Core / MVC, Web API, SQL Server, JavaScript, Angular, Azure (App Services, Storage, Functions), Docker, Azure DevOps (CI/CD pipelines) I have worked on web apps, services, background jobs and cloud-based solutions, including deployment pipelines and containerized environments. I usually focus on understanding the actual business flow first, then making changes in a safe and controlled way so production systems remain stable. If your system is getting hard to maintain, risky to change or integrations keep breaking, I can help bring it under control.