I have over 15 years industry proven experience in designing and developing business oriented (cloud-based) robust, scalable, high performance and interactive software solutions using legacy as well as modern frameworks, tools & technologies. I have also been providing comprehensive infrastructure management, devops, build, deployment, maintenance and support services using on-premise and cloud platforms such as Azure, AWS and GCP. I have been extensively working on API based development, integration and automations. List of work done or clients I worked with: - Eziway (Australia) - Brainstorm Productions (USA) - Contel (Israel) - American Prime Lending (USA) - grupo-core [dot] com/intranet/ (Spain) - nanhikali [dot] org (India) - THJA (USA) - Living Space Estate Agents (UK) - Tupperware India (USA-India) - Votrite (USA) - Optim Healthgroup LLC (https:// appstoremedia.blob.core.windows.net/media/Partners/Medical%20Information%20Records/brochureAOS415.pdf) (USA) - Bridgestone EU (Europe)

Most business software is either too expensive, too rigid, or just doesn’t match how you actually work. I build custom systems that automate processes, reduce manual work, and scale with your business - exactly the way you need. 🚀 Many businesses rely on expensive, off-the-shelf software that doesn’t fit their real processes - or forces them to pay for features they don’t need. I design and build custom systems that: • match your actual workflows instead of forcing you to adapt • automate manual processes, saving time and reducing errors • integrate with your existing tools seamlessly • stay flexible as your business grows What I deliver: • Custom business systems replacing or complementing legacy platforms • Process automation and workflow digitization • CRM/POS integrations and data synchronization • Scalable, maintainable architecture (.NET, React, Angular, MS SQL, MongoDB, Node.js) How I work: I start by understanding your operations and pain points, then design a solution that eliminates inefficiencies and unlocks growth potential - without overpaying for unnecessary complexity. If you’re paying too much for software that doesn’t really fit your business, I can help you build something better.

I am Ahmed El-Sonpaty, a Software Developer and Structural Engineer with a strong proficiency in C#. With a solid foundation in Civil Engineering, I specialize in developing advanced tools and plugins for a variety of structural applications, leveraging APIs to enhance functionality and improve workflows. My expertise spans multiple AEC software, including Tekla Structures, Revit, AutoCAD, BricsCAD, SAP2000, ETABS, STAAD.Pro and Rhino. I am passionate about integrating computational design and automation into BIM workflows to solve complex engineering challenges. Skills and Technologies: Programming Languages: C#, WPF, MVVM Architecture, .NET Framework, .NET Core, .NET 8.0 APIs: Tekla Structures API, Revit API, AutoCAD API, BricsCAD API, SAP2000 API, ETABS API, STAAD.Pro API, Rhino API Computational Design: Grasshopper scripting, automating geometries, developing custom Grasshopper components Database Management: Entity Framework Core (EF Core) Web Technologies: ASP.NET

********Upwork TOP Rated | 100% Client Recommendation ****** 12+ years of experience in developing medium to enterprise-level applications from scratch and migrating legacy applications to the latest technology. I am specialized in: - ASP.NET Core, ASP.NET MVC, C#, VB.Net, WPF, VB6, EF6, LINQ and Xamarin. - Angular/React Latest Versions. - CMS- NopCommerce, Umbraco, Sitecore, Sitefinity. - SQL Server, SSRS, SSIS, UDF, and Stored Procedures. - IoC/ DI implementation, Repository, and Unit of Work Pattern and Singleton. - Bootstrap, Javascript, JQuery, HTML5, CSS3 and Ajax. - Azure & AWS Cloud Services Experienced in Mobile Application Development through Xamarin for 3+ years. Business Domain Expertise - ERP, CRM, Survey Solutions, Drip Campaigns, and Loyalty Programs. Project Management Tools - Very well familiar with Jira, Asana, Ace, and Trello. Version Control Systems - Git, TFS, and SVN. Thanks for reviewing my profile.

I am a professional full-stack developer with more than 10 years of experience in web development with excellent knowledge in ASP.Net MVC - C# and MS SQL server as well as Python - Django, MySQL. Also has great front-end capabilities & experience in CSS3, HTML5, TypeScript, JavaScript, Angular, jQuery & bootstrap and much more along with exceptional problem solving skills. Please check out my portfolio for example of my work.

🌟 Transform Your Vision into Reality with a Trusted Tech Partner! 🌟 Hi there! I’m Ajay Kumar, a seasoned tech leader with 10+ years of expertise in Microsoft, Python, and Cloud technologies, leading a high-performing team that builds secure, scalable, and future-ready software solutions. Whether you’re building from scratch, modernizing legacy systems, or scaling cloud infrastructure — we make complexity feel simple. 🚀 What We Deliver 🔧 Full-Stack Development Expertise Backend Powerhouse: ✅ Microsoft Stack: ASP.NET MVC, .NET Core, REST APIs, JWT, Entity Framework, Microservices ✅ Python Stack: Django, FastAPI, Flask, Tornado, Bottle, Pyramid, Falcon, Eve — everything you need in Python development ✅ PHP Stack: Laravel, Core PHP, CodeIgniter ✅ AI/LLM Integration: Implement and fine-tune Large Language Models (LLMs) using OpenAI, HuggingFace, LangChain, RAG — for smart apps like: AI chatbots Document summarization Semantic search Recommendation systems Frontend Brilliance: ✅ Angular ✅ React.js ✅ Razor Pages ✅ HTML5/CSS3 ✅ JavaScript — responsive and modern UI/UX ☁️ Cloud & DevOps Mastery ✅ Azure: App Services, Functions, Blob Storage, Azure SQL, Azure AD, Azure DevOps ✅ AWS: Lambda, EC2, S3, RDS, API Gateway ✅ DevOps: CI/CD Pipelines, Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI ✅ Cloud-Native Deployments: Secure and cost-efficient infrastructure 🔐 Secure, Scalable Data & Auth Systems ✅ Databases: SQL Server, PostgreSQL, MySQL — optimized for performance & scalability ✅ Authentication: JWT, OAuth2, Azure AD, Identity Server ✅ Version Control: Git, GitHub, GitLab, GitExtensions 🏭 Industries We Empower We serve FinTech, Healthcare, eCommerce, Logistics, EdTech, Real Estate, and 15+ other industries — delivering domain-aligned tech solutions with precision. 💡 Why Partner With Us? ✅ End-to-End Product Ownership — from UI to DevOps ✅ Microservices-Driven Architecture — effortless scalability ✅ Security-First Mindset — best practices & compliance (GDPR, HIPAA, etc.) ✅ Transparent Agile Development — sprint planning, daily standups, and demos ✅ Fast LLM Integration — build AI-powered features in days ✅ Full Python Stack coverage — Django, FastAPI, Flask, Tornado, Bottle, Falcon, Eve & more 🕒 Availability & Reliability ✅ 24/7 Support & Monitoring ✅ Flexible Engagement Models (Dedicated, Hourly, Fixed) ✅ Rapid Onboarding & Transparent Communication 🔖 #TechPartner #AzureDeveloper #AngularDeveloper #FullStackDevelopment #CloudSolutions #DevOps #PythonDevelopment #MicrosoftTechnologies #FastAPI #Django #Flask #LLMIntegration #Microservices #ASPNetCore #ReactJS #DatabaseManagement #CyberSecurity #AgileDevelopment #DigitalTransformation #eCommerce #Healthcare #FinTech #Logistics #PythonFullStack

⭐ TOP-RATED .NET Full-Stack Developer & React Native Mobile App Specialist ⭐ 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐝𝐮𝐫𝐢𝐧𝐠 𝐔𝐒, 𝐂𝐚𝐧𝐚𝐝𝐚, 𝐔𝐊, 𝐨𝐫 𝐩𝐫𝐞𝐟𝐞𝐫𝐫𝐞𝐝 𝐭𝐢𝐦𝐞 𝐳𝐨𝐧𝐞𝐬 𝐟𝐨𝐫 𝐬𝐞𝐚𝐦𝐥𝐞𝐬𝐬 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧. 🏆 𝐓𝐞𝐫𝐫𝐢𝐟𝐢𝐜 𝐔𝐩𝐰𝐨𝐫𝐤 𝐇𝐢𝐬𝐭𝐨𝐫𝐲 𝐰𝐢𝐭𝐡 𝟳𝐊+ 𝐇𝐨𝐮𝐫𝐬 & 𝐂𝐨𝐮𝐧𝐭𝐢𝐧𝐠. 🚀 𝐌𝐲 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐭𝐢𝐞𝐬 🚀 Hi! I’m a **.NET Full-Stack Developer & React Native Mobile App Specialist** with 12+ years of experience helping startups, enterprises, and innovators build **secure, scalable, and high-performance applications**—from robust web backends to sleek cross-platform mobile experiences. Whether you need a custom business web app, a real-time API-driven platform, or a feature-rich mobile app for iOS and Android, I deliver solutions that are **clean, maintainable, and built to grow**. **My Expertise Includes:** 🔹 Full-cycle .NET development (ASP.NET Core, C#, MVC, Web API, Entity Framework) 🔹 Cross-platform mobile apps with **React Native** (iOS & Android) 🔹 RESTful & GraphQL API design and integration 🔹 Cloud deployment (Azure, AWS) and DevOps best practices 🔹 SQL Server, PostgreSQL, and NoSQL database architecture 🔹 Agile development with CI/CD, Git, and modern testing workflows **What I Focus On:** 🔹 **.NET Web Applications** – Secure, responsive, and data-driven business solutions 🔹 **React Native Mobile Apps** – Native-like performance with shared codebase efficiency 🔹 **Backend APIs & Microservices** – Scalable, well-documented, and easy to integrate 🔹 **Authentication & Security** – JWT, OAuth, role-based access, and data protection 🔹 **Performance Optimization** – Fast load times, smooth UX, and efficient resource use 🔹 **End-to-End Ownership** – From concept and architecture to deployment and support **Tools & Technologies:** 🔸 C#, .NET 6/8, ASP.NET Core, Blazor 🔸 React Native, TypeScript, Redux, Expo 🔸 SQL Server, PostgreSQL, MongoDB, Firebase 🔸 Azure, AWS, Docker, GitHub Actions 🔸 REST/GraphQL, SignalR, Entity Framework Core 🔸 Figma (for UI handoff), Postman, Swagger, Jest, React Testing Library Let’s build an application that not only solves your business challenge but also delights your users and stands the test of time. **I’m ready when you are—just send me a message, and let’s bring your vision to life!** 💻📱 Thanks and Regards, Varinder Gupta

Need a reliable Senior .NET Developer who can turn your ideas into scalable, production-ready software? With over 10 years of professional experience, I specialize in building high-quality desktop and web applications using C#, .NET, ASP.NET Core, WPF, WinForms, Avalonia, SQL Server, and Azure. I've worked with startups and established businesses to develop new products, modernize legacy applications, integrate third-party APIs, and optimize existing systems for performance and maintainability. As a Senior Software Engineer and Team Lead, I have hands-on experience across the complete software development lifecycle—from gathering requirements and designing system architecture to development, testing, deployment, and long-term support. I write clean, maintainable code and focus on delivering solutions that are reliable, scalable, and easy to extend. My expertise includes: ✔ C#, .NET Framework & .NET (Core/.NET 8+) ✔ ASP.NET Core MVC & REST API Development ✔ WPF, WinForms & Avalonia Desktop Applications ✔ SQL Server, Entity Framework & Performance Optimization ✔ Azure Cloud Deployment & App Services ✔ Third-party API Integration (Payment, Crypto, ERP & more) ✔ Legacy Application Modernization & Desktop-to-Web Migration ✔ Bug Fixing, Code Refactoring & Performance Improvements I believe communication is just as important as technical expertise. I keep clients informed throughout the project, deliver on time, and focus on building long-term professional relationships based on trust and quality. Whether you need a new application, enhancements to an existing system, API integrations, or an experienced developer to join your team, I'm ready to help. Let's discuss your project and find the best solution together.

C# Development 👨‍💻, ASP.NET Core 🟢, Angular 📐, React ⚛️, TypeScript ✍️, Entity Framework Core 🗄️, Microsoft SQL Server 💾, Azure ☁️, Docker 🐳, SignalR 📡, Microservices 📦, REST APIs 🌐, Clean Architecture 🏗️ When your product needs to scale, your architecture needs to be right from day one. That's exactly what I deliver. I'm a 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 𝗮𝗻𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 .𝗡𝗘𝗧 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟵+ 𝘆𝗲𝗮𝗿𝘀 building enterprise-grade platforms for 𝗦𝗮𝗮𝗦 companies,𝗳𝗶𝗻𝘁𝗲𝗰𝗵 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀, and global businesses. My work sits at the intersection of clean backend engineering, modern frontend experiences, and cloud-native infrastructure — powered by 𝗖#, .𝗡𝗘𝗧 𝟴, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 𝟭𝟳, 𝗥𝗲𝗮𝗰𝘁, 𝗮𝗻𝗱 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗔𝘇𝘂𝗿𝗲. ✅ 𝗪𝗛𝗔𝗧 𝗜 𝗔𝗥𝗖𝗛𝗜𝗧𝗘𝗖𝗧 𝗔𝗡𝗗 𝗕𝗨𝗜𝗟𝗗 ✦Scalable REST APIs & Microservices using ASP.NET Core, Clean Architecture, CQRS, MediatR, and Entity Framework Core ✦Dynamic Angular & React frontends with real-time capabilities via SignalR and WebSockets Secure authentication systems built with JWT, OAuth 2.0, OpenID Connect, and role-based access control (RBAC) ✦Azure cloud deployments with Docker, Kubernetes, Azure DevOps, and full CI/CD pipelines AI-integrated features using OpenAI API, Azure OpenAI, and Semantic Kernel embedded directly into .NET applications ✦Event-driven architectures using Azure Service Bus, RabbitMQ, and message queue patterns Database design & optimization across Microsoft SQL Server, PostgreSQL, Redis caching, and EF Core migrations ✅ INDUSTRIES I'VE DELIVERED IN ✦Fintech & Banking — KYC/AML onboarding portals, compliance workflows, payment gateway integrations, and PCI-DSS-aware systems ✦SaaS Platforms — Multi-tenant architecture, subscription billing, feature flagging, and white-label solutions ✦E-Commerce — High-volume transaction handling, inventory management, order processing, and third-party API integrations ✦Enterprise Internal Tools — Real-time dashboards, workflow automation, ERP integrations, and reporting systems ✅𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 𝗥𝗘𝗣𝗘𝗔𝗧𝗘𝗗𝗟𝗬 Most developers write code. I solve business problems with code. Before touching a keyboard, I map out the architecture, identify the risks, and align the technical approach with your business goals. You won't get surprises mid-project. You'll get clear communication, early warnings, and a system you can maintain and grow long after I'm done. I've built platforms handling thousands of daily transactions, onboarding systems used by regulated financial institutions, and SaaS products trusted by enterprise clients across multiple industries. Every system I deliver is documented, tested, and built to hand off cleanly — with unit tests, integration tests, Swagger/OpenAPI docs, and clean repository structure. ✅ 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛𝗡𝗜𝗖𝗔𝗟 𝗦𝗧𝗔𝗖𝗞 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: C# · ASP.NET Core · .NET 8 · Web API · Minimal APIs · CQRS · MediatR · Clean Architecture · Domain-Driven Design (DDD) · Entity Framework Core · Dapper Frontend: Angular · React · TypeScript · RxJS · NgRx · Redux · HTML5 · CSS3 · SignalR 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Microsoft Azure · Azure App Service · Azure Functions · Azure Service Bus · Azure DevOps · Docker · Kubernetes · CI/CD Pipelines · GitHub Actions 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: Microsoft SQL Server · PostgreSQL · Redis · CosmosDB · T-SQL · Query Optimization Security & Auth: JWT · OAuth 2.0 · OpenID Connect · Azure AD B2C · IdentityServer · RBAC 𝗔𝗜 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: OpenAI API · Azure OpenAI · Semantic Kernel · REST & GraphQL APIs · Stripe · Twilio · SendGrid 🗓️ 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗻𝗼𝘄. 𝗜 𝗿𝗲𝘀𝗽𝗼𝗻𝗱 𝘄𝗶𝘁𝗵𝗶𝗻 𝟰 𝗵𝗼𝘂𝗿𝘀. Not sure if I'm the right fit? Let's have a free 30-minute discovery call — no pitch, no pressure, just an honest conversation about your project and whether we're a good match. --- NET Developer, ASP.NET Core, Azure Developer, Solutions Architect, Microservices, REST API Development, Angular Developer, React Developer, C# Developer, Clean Architecture, SaaS Development, Fintech Developer, Full Stack Developer, CI/CD, Docker, AI Integration, OpenAI, Entity Framework, SignalR, JWT Authentication, Multi-tenant SaaS, KYC AML, Enterprise Software, TypeScript

🚀**I’m a Freelance Web Designer / SEO Specialist & I Love To Build Great Looking Websites** I am committed to delivering high quality work for every client, ensuring your website stands out and meets your expectations. When you work with me, you’ll find my down to earth approach makes the process straightforward and enjoyable. My focus is always on delivering results that help your business grow.