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Hi ! This is Sourav, A self-motivated, hard-working ASP.NET Full Stack Developer with 8+ years of experience in building web application with ASP.NET, .NET Core, ASP .NET Web API, Web-Form applications using Oracle and MS SQL Server Database for companies/individuals. I am fully equipped to develop Enterprise-grade applications(ERP) with latest .NET technologies.

ABP Framework Expert | Senior .NET Architect Skilled in .NET, ABP Framework, Angular, and Blazor. Proficient in microservices, modular monolith, and monolithic architectures. Hello Upwork members, I'm a Senior Full Stack Engineer specializing in ABP Framework and ASP.NET Core, with 3+ years building enterprise SaaS products, from founding engineer on a 17-service microservices platform to modular monolith ERPs, hotel and hospital management systems, and cross-platform apps running on a single Blazor codebase. 💻 Core ABP & .NET Expertise → ABP Framework (modules, multi-tenancy, subscription system internals, OpenIddict) → Domain-Driven Design, aggregates, domain managers, domain events, Notification Pattern → CQRS + MediatR, Inbox/Outbox pattern, event-driven architecture with RabbitMQ → Entity Framework Core (migrations, query optimization, keyset pagination) → Custom SaaS subscription systems, dynamic plan builders, Stripe billing, tenant provisioning 🌐 Full Stack & Frontend → Angular (reactive forms, RxJS, LeptonX theme customization) → Blazor Server, WebAssembly, and Hybrid — plus .NET MAUI for shared web/desktop/mobile codebases → ASP.NET Core Web API, REST design, YARP API gateway → PostgreSQL, Redis distributed caching 🏗️ Architecture I Actually Ship ✔ Microservices (schema-per-service PostgreSQL, RabbitMQ event bus, centralized OpenIddict auth) ✔ Modular Monolith (my default recommendation for most SaaS, enforced module boundaries, DIP-based cross-module communication) ✔ Clean Architecture and CQRS where the problem actually calls for it ✔ SaaS multi-tenancy, timezone-aware scheduling, department-level data isolation 🔒 Security & AI Integration ✔ Led full remediation of a third-party pentest (4 critical + 6 high findings), HttpOnly cookie migration, CSP rollout, JWT claim hygiene, OAuth grant hardening ✔ Built an MCP server on a live production ABP system for AI agent integration, and Semantic Kernel-powered live-data chat interfaces 📌 Why Clients Choose Me ✅ Deep, multi-system ABP Framework experience, not a single-project generalist ✅ Clear judgment on monolith vs. modular monolith vs. microservices, based on actual requirements, not trend-chasing ✅ Security treated as architecture, not an afterthought ✅ Founding-engineer experience, I can own architecture solo on a greenfield product If you need someone who can architect an ABP-based SaaS platform end to end, backend, Angular/Blazor frontend, and the infrastructure decisions in between — let's talk.

Hi there, I'm a Software Engineer. I am working on Windows and Web Development. I can help you to build your application. I value my time, and I know you do the same way. So let's do business now! Cheapest and Reliable provider!!! Support is available 24/7. My services are: ● C#, C ● .Net Windows & Web Development. ● .Net MVC, .Net Web Form, ADO.Net, VB .Net. ● .Net Web API, RESTful API ● .Net Core, .Net MAUI. ● Layer Architecture. ● Crystal Report, SSRS (RDLC Report) ● ERP HR Module, Banking Remittance Solution. ● Umbraco CMS. ● IIS Hosting Server. ● Azure web hosting, Azure DevOps, Docker. ● JavaScript, jQuery. ● Kendo UI-(Telerik). ● HTML, CSS. ● Angular 10 (Basic), Blazor (Basic). ● PSD to HTML ● MS SQL, PostgreSQL. ● SignalR. ● Unit Testing (SonarQube) ● GitHub, GitLab ● Agile (Jira, Trello). You will get: Quality Work 100% satisfaction Full-time support 100% accuracy Always available for customer orders. ORDER NOW TO GET YOUR JOB DONE WITH 100% ACCURACY! ❉❉❉ Thank You ❉❉❉

🏆 𝗨𝗽𝘄𝗼𝗿𝗸 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗿𝗼𝗱𝗶𝗴𝘆 ✅ 𝗢𝘃𝗲𝗿 𝟭𝟱𝟬𝟬+ 𝗱𝗲𝗱𝗶𝗰𝗮𝘁𝗲𝗱 𝘄𝗼𝗿𝗸 𝗵𝗼𝘂𝗿𝘀 ✅ 𝟳+ 𝗴𝗿𝗼𝘂𝗻𝗱𝗯𝗿𝗲𝗮𝗸𝗶𝗻𝗴 𝘆𝗲𝗮𝗿𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗳𝗶𝗲𝗹𝗱 Completion of 11+ milestone projects on Upwork. Welcome to the world of Moazzem Hossain, a veteran .NET Developer with a proven track record in building robust Microsoft technology-based applications. With a combined proficiency in both Back-End and Front-End development, Moazzem's work is a testament to his experience and skill with enterprise-grade websites backed by the powerhouse of Microsoft SQL server databases. His impressive portfolio encompasses the development of intricate programming solutions using C# and JavaScript, focusing on a variety of .NET Frameworks. 🚀 Moazzem Hossain's Domain Expertise: ✅ Back-End Development Virtuoso: Drawing on his deep understanding of ASP.NET technologies, Moazzem excels as a Back-End .NET Developer, wielding his expertise in ASP.NET Web API2, ASP.NET Core, ASP.NET MVC 5, ASP.NET Web Forms, ADO.NET, and Entity Framework. ✅ Front-End Development Maestro: As a seasoned .NET Developer, Moazzem has an unparalleled mastery over HTML5, CSS3, Bootstrap, JavaScript, JQuery, and Ajax, enabling him to build user interfaces that are intuitive, responsive, and user-friendly. ✅ UI Frameworks Guru: His proficiency extends to UI frameworks such as Kendo UI, Telerik, and JQuery UI, where he crafts stunning user interfaces that further enrich user experience. ✅ Business Domain Expert: As a leading .NET Developer, Moazzem has significant experience in the e-wallet and payment gateway integration, warehouse inventory management, and supply chain management domains, delivering high-value solutions to his clients. ✅ Unmatched Work Ethic: Moazzem champions code that's clean, readable, reusable, and maintainable, with strict adherence to SQL ACID principles. His expertise in optimized SQL transaction writing, SQL transaction flow control, and T-SQL code debugging and profiling, places him among the top .NET Developers in the industry. 👉 Why Choose Moazzem Hossain? Moazzem offers over 1500+ hours of dedicated .NET Development work and has successfully delivered 11+ milestone projects in his 7+ years of transformative experience. Above all, Moazzem provides unwavering 24/7 support, ready to collaborate and redefine your project's success. In the realm of .NET Developers, Moazzem Hossain's expertise is second to none. His proficiency, backed by years of experience, makes him a top-rated .NET Developer. Reach out today for unparalleled software development services! Best Regards, Moazzem Hossain Your Go-To .NET Developer

I'm a Senior Full-Stack .NET Developer with 14+ years of experience delivering enterprise web applications, SaaS platforms, and scalable business solutions for clients across the USA, Europe, Canada, and Australia. I specialize in building secure, high-performance applications using ASP.NET Core, C#, Blazor, React, Next.js, Web API, SQL Server, PostgreSQL, Azure, and Umbraco CMS. I also have extensive experience integrating Stripe, Authorize.Net, third-party APIs, and AI-powered solutions. ##Core Expertise: * ASP.NET Core, C#, Web API, REST APIs, Entity Framework Core, LINQ,Dapper * Blazor, React.js, Next.js, JavaScript, TypeScript, JavaScript, HTML5, CSS3, Bootstrap * Umbraco CMS & DotNetNuke(DNN) * SQL Server, PostgreSQL * Microsoft Azure,Azure App Service,Azure SQL Database,Azure Communication Services * Stripe, Authorize.Net * Google APIs, Facebook APIs, Email & SMS Services,Third-party REST APIs * AI-assisted application development * GitHub, Azure DevOps ## What I can help you build ✔ Enterprise Web Applications ✔ SaaS Platforms (Multi-Tenant) ✔ ERP & CRM Systems ✔ Inventory & Order Management ✔ Property Management Systems ✔ Healthcare & Education Platforms ✔ Financial & Accounting Solutions ✔ REST APIs & Third-Party Integrations ✔ AI-powered Business Applications ✔ Legacy .NET Modernization ✔ Cloud-ready Solutions on Microsoft Azure I focus on delivering clean architecture, scalable solutions, and high-quality code that helps businesses grow. Whether you need a new SaaS platform, enterprise application, API integration, or modernization of an existing system, I'm ready to help. If you're looking for a senior developer who understands both technology and business, I'd be happy to discuss your project and help turn your ideas into reliable, scalable software.

𝐍𝐞𝐞𝐝 𝐚 𝐒𝐞𝐧𝐢𝐨𝐫 .𝐍𝐄𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐰𝐡𝐨 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐬 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐬𝐨𝐟𝐭𝐰𝐚𝐫𝐞—𝐧𝐨𝐭 𝐣𝐮𝐬𝐭 𝐜𝐨𝐝𝐞? 𝐈'𝐦 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐟𝐨𝐫 𝐟𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐫𝐞𝐦𝐨𝐭𝐞 𝐨𝐩𝐩𝐨𝐫𝐭𝐮𝐧𝐢𝐭𝐢𝐞𝐬. 𝐈𝐟 𝐲𝐨𝐮'𝐫𝐞 𝐥𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫 𝐚 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐡𝐨 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐞𝐬 𝐜𝐥𝐞𝐚𝐫𝐥𝐲, 𝐭𝐚𝐤𝐞𝐬 𝐨𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩, 𝐚𝐧𝐝 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐬 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤. I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐰𝐢𝐭𝐡 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 building secure, scalable, and high-performance applications using the Microsoft .NET ecosystem. I specialize in designing clean, maintainable solutions that solve real business problems and support long-term growth. 𝐈 𝐥𝐞𝐯𝐞𝐫𝐚𝐠𝐞 𝐦𝐨𝐝𝐞𝐫𝐧 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐭𝐨𝐨𝐥𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞, 𝐂𝐨𝐝𝐞𝐱 𝐚𝐧𝐝 𝐂𝐡𝐚𝐭𝐆𝐏𝐓, 𝐭𝐨 𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐰𝐡𝐢𝐥𝐞 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐢𝐧𝐠 𝐡𝐢𝐠𝐡 𝐜𝐨𝐝𝐞 𝐪𝐮𝐚𝐥𝐢𝐭𝐲, 𝐭𝐞𝐬𝐭𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐛𝐞𝐬𝐭 𝐩𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬. 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐘𝐨𝐮 𝐖𝐢𝐭𝐡 ✔ AI-powered applications & AI Agent integration ✔ ASP.NET Core Web Applications ✔ RESTful APIs & Backend Development ✔ Blazor Server & Blazor WebAssembly ✔ Enterprise Software Development ✔ Legacy Application Modernization ✔ Database Design & Performance Optimization ✔ Third-party API & Payment Gateway Integration ✔ Bug Fixing, Refactoring & Performance Improvements 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: C#, .NET 8/9/10, ASP.NET Core, ASP.NET MVC, Web API 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 & 𝐃𝐞𝐬𝐢𝐠𝐧 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 & 𝐏𝐫𝐢𝐧𝐜𝐢𝐩𝐥𝐞𝐬: RESTful APIs, Clean Architecture, Layered Architecture, Vertical Slice Architecture, Domain-Driven Design (DDD), CQRS, Repository Pattern, Mediator Pattern, OOP, SOLID, DRY, KISS, YAGNI & Clean Code 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐎𝐑𝐌: SQL Server, Entity Framework Core, Dapper, LINQ, Stored Procedures 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: Azure, Azure DevOps, GitHub Actions, CI/CD 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: xUnit, Unit Testing, Integration Testing, Architecture Testing(NetArchTest.Rules), Fluent Assertions, Shouldly, NSubstitute 𝐎𝐛𝐬𝐞𝐫𝐯𝐚𝐛𝐢𝐥𝐢𝐭𝐲 & 𝐃𝐨𝐜𝐮𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧: Swagger/OpenAPI, Scalar, API Versioning, Health Checks, Serilog 𝐅𝐫𝐨𝐧𝐭-𝐄𝐧𝐝: Blazor, MudBlazor, Razor Pages, Bootstrap 𝐀𝐈 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Generative AI, AI Agents, OpenAI Integration, AI Chatbot Development 𝐓𝐨𝐨𝐥𝐬: Visual Studio, SSMS, Postman, Insomnia, Git, Jira, Trello, Slack, Copilot, Claude, Codex. I write clean, well-tested, maintainable code, communicate proactively, and focus on delivering software that is reliable, scalable, and easy to maintain. 𝐖𝐡𝐞𝐭𝐡𝐞𝐫 𝐲𝐨𝐮 𝐧𝐞𝐞𝐝 𝐚 𝐧𝐞𝐰 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐀𝐏𝐈𝐬, 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧, 𝐨𝐫 𝐚𝐧 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 .𝐍𝐄𝐓 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐭𝐨 𝐬𝐭𝐫𝐞𝐧𝐠𝐭𝐡𝐞𝐧 𝐲𝐨𝐮𝐫 𝐭𝐞𝐚𝐦, 𝐈'𝐝 𝐛𝐞 𝐡𝐚𝐩𝐩𝐲 𝐭𝐨 𝐡𝐞𝐥𝐩. 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞, 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭.