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Senior .NET Full-Stack Developer with 8+ years of experience building SaaS platforms, ERP systems, REST APIs, AI-powered applications, and enterprise software used by thousands of users. I help businesses launch scalable, secure, and cloud-ready solutions using ASP.NET Core, C#, Azure, React, Angular, and modern AI technologies. My expertise spans ASP.NET Core, .NET 8/9, C#, microservices, cloud infrastructure, enterprise integrations, and modern frontend frameworks including React, Angular, Blazor, and Next.js. I have successfully delivered scalable applications ranging from fintech and logistics platforms to healthcare, eCommerce, AI-powered SaaS products, and enterprise workflow systems. In addition to backend and frontend engineering, I have strong experience integrating AI-powered solutions into enterprise applications, including intelligent chatbots, recommendation engines, predictive analytics, workflow automation, computer vision, and AI-assisted decision systems. I have worked with AI integrations, automation frameworks, and cloud AI services to improve operational efficiency and user engagement. Languages C#, ASP.NET Core, .NET Framework, .NET 8/9, TypeScript, JavaScript (ES6+), SQL, T-SQL, Python, HTML5, CSS3, Dart, JSON Frontend Technologies React.js, Next.js, Angular, Blazor, Razor Pages, MVC, Bootstrap, Tailwind CSS, Material UI, Shadcn/UI, jQuery Backend & Frameworks ASP.NET Core MVC, ASP.NET Web API, Entity Framework Core, LINQ, SignalR, MediatR, Dapper, Minimal APIs, gRPC, MassTransit, RabbitMQ, Hangfire, Quartz.NET, Node.js, Express.js, NestJS Cloud, DevOps & Infrastructure Microsoft Azure, Azure DevOps, AWS Services, Docker, Kubernetes, GitHub Actions, Firebase, Cloud Functions, IIS, Nginx, CDN & Security Platforms Databases & Storage Microsoft SQL Server, PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, SQLite, Firebase Firestore, Elasticsearch, Cloud Storage Solutions Integrations & APIs Payment Gateways, Logistics APIs, Shipping Integrations, GPS & Fleet Tracking Systems, ERP/CRM Integrations, Marketplace APIs, Communication Platforms, AI Services, Authentication Providers, Real-time Notification Systems Tools & Platforms Visual Studio, VS Code, Git, GitHub, Bitbucket, Jira, Postman, Swagger/OpenAPI, Docker Desktop, Azure Portal, Firebase Console Architecture & Methodologies Microservices Architecture, Clean Architecture, Domain-Driven Design (DDD), CQRS, Event-Driven Architecture, SOLID Principles, MVC, MVVM, Agile, Scrum, Kanban Core Expertise • Enterprise SaaS Platforms • Fintech & Payment Applications • Logistics & Transportation Management Systems • Fleet Management & Real-time Tracking • eCommerce & Marketplace Solutions • Healthcare & Telemedicine Platforms • AI-Powered Applications • CRM / ERP Systems • Booking & On-demand Platforms • IoT & Device Integrations • Warehouse & Inventory Management • Multi-tenant Applications • Secure API Development • Cloud-native Applications • Real-time Applications & Notifications AI development: • OpenAI API • GPT-4o • RAG • Vector Databases • AI Agents • LangChain • MCP • Cursor AI • Workflow Automation • AI Chatbots

🏆𝗜 𝗛𝗘𝗟𝗣 𝗖𝗢𝗠𝗣𝗔𝗡𝗜𝗘𝗦 𝗠𝗢𝗗𝗘𝗥𝗡𝗜𝗭𝗘, 𝗦𝗖𝗔𝗟𝗘, 𝗔𝗡𝗗 𝗦𝗧𝗔𝗕𝗜𝗟𝗜𝗭𝗘 𝗖𝗢𝗠𝗣𝗟𝗘𝗫 .𝗡𝗘𝗧 𝗦𝗬𝗦𝗧𝗘𝗠𝗦. Whether you're building a new SaaS platform, modernizing a legacy .NET application, or rescuing a system that's becoming difficult to maintain, I help you build software that's stable, scalable, and easier to evolve. Most clients come to me when: They’re starting a system and want to build it clean and scalable from day one Or the system already works… but feels fragile, slow, or hard to maintain Or growth is starting to break the architecture I step in, take ownership, and make sure the system is stable, scalable, and built to last. 🔹 QUICK SNAPSHOT ✔ 15+ years in .NET, SaaS, enterprise systems ✔ 100% Job Success on Upwork ✔ $50K+ delivered ✔ 2000+ hours on long-term systems ✔ Systems I built are still running after 10+ years 💡 My responsibility doesn't end when the code compiles. I make sure your system is maintainable, reliable, and ready for future growth. 🔧 WHAT I CAN HELP YOU WITH ✔ Stabilizing legacy .NET Framework applications ✔ Migrating to .NET Core / .NET 8 ✔ Designing scalable SaaS architecture ✔ Building and maintaining REST APIs ✔ Fixing performance & production issues ✔ Taking over systems where previous developers left 🧠 WHAT MAKES ME DIFFERENT Most projects don’t fail because of bad code they fail because NO ONE UNDERSTANDS THE SYSTEM anymore. I specialize in: • Understanding complex, undocumented systems • Fixing ROOT CAUSES, not symptoms • Improving architecture WITHOUT unnecessary rewrites Focus areas: • Clean, maintainable architecture • Long-term reliability • Proactive communication ⚙️ HOW I WORK I join as a SENIOR .NET ARCHITECT and not just a developer. ✔ I understand your system quickly ✔ I take ownership ✔ I work independently ✔ I focus on business impact 🧰 TECH STACK CORE TECHNOLOGIES Backend C#, .NET Framework, .NET 8, ASP.NET Core, Web API, Entity Framework, REST API, Web API Frontend Angular, Vue, TypeScript, Blazor, ASP.Net MVC Database SQL Server, PostgreSQL, MySQL, ORACLE Cloud & DevOps Azure DevOps, AWS, Docker, CI/CD Architecture SaaS Platforms, SaaS Archiecture, REST APIs, Microservices, Monolith, Legacy Modernization, Cloud Migration 🔄 SERVICES ✔ .NET Migration ✔ Legacy Modernization ✔ .NET Framework → .NET 8 ✔ Architecture Modernization ✔ Cloud Migration ✔ System Restructuring ⭐ REAL CLIENT FEEDBACK “Tremendous asset for large, long-term, complicated projects. He gets it done.” CTO, American Penaeid (2000+ hours) “He always gets the job done no matter how difficult it is.” Robin Pearl (10-year client) 💬 IF YOUR SYSTEM IS CRITICAL AND YOU NEED SOMEONE WHO CAN TRULY TAKE OWNERSHIP, LET’S TALK.

It's been 10+ years working as a Full Stack Developer React Node (MERN Developer), specializing in React.js, Node.js, and Express.js, building SaaS platforms, MVPs, AI-powered apps, and enterprise web applications. 15+ years as a .NET Developer, past and current, giving me a rare depth in enterprise architecture that most React/Node developers don't have. $90K+ earned and 47 projects delivered on Upwork as a React MERN Developer and SaaS Developer, with a 100% Job Success Score and Top Rated status. 50+ SaaS platforms shipped as a Senior React MERN Developer, including multi-tenant architecture, subscription billing, and role-based access systems. 1,178+ hours delivered across full stack builds from early-stage MVP to production SaaS platform as a Full Stack Developer React Node. 700+ enterprise clients migrated from legacy .NET systems to modern React/Node.js stacks, drawing on 15+ years of .NET depth alongside 8 years of hands-on MERN/React/Node delivery. PhD in Computer Science, 14,000+ StackOverflow reputation, and an active GitHub presence since 2014 engineering rigor behind every SaaS Developer engagement. WHERE I DELIVER As a React Developer, component architecture, dashboard builds, and responsive UI for SaaS platforms and enterprise web apps, with 500+ production launches. As a MERN Developer, REST APIs, backend architecture, MongoDB database design, and secure, scalable systems as a Full Stack Developer React Node. As a React MERN Developer end-to-end SaaS builds from data architecture to polished frontend, including a UK fintech SaaS platform (account management, compliance, CRM, and payment tooling). As a Senior React Developer, AI-powered web application productionization, including auth, backend, AWS deployment, rate limiting, and monitoring for a live product. As a SaaS Developer, multi-tenant applications, workflow automation, and third-party API/payment integrations across healthcare, fintech, and logistics domains. As a .NET Developer with 15+ years of enterprise depth legacy system modernization and .NET-to-Node/React migration for teams replatforming older applications, backed by 8 years of hands-on MERN delivery on the other side of the migration. INDUSTRY IMPACT FinTech / SaaS: Built a UK-based fintech SaaS platform covering account and investment management, loan and insurance workflows, budgeting tools, compliance and fraud detection, and secure payments, as a React MERN Developer. Healthcare: I have worked on Medi Spack Platform, Medical Audit platform and Klinck Care as a React MERN Developer. E-Commerce / CRM: I have developed ShopisLive, 100000+ orders processed / 10000+ customers managed, as a Full Stack Developer React Node. AI-Powered Applications: EZPZ, AI SaaS Comission Platform, built with ChatGPT, Claude and Gemini AI Integrated and productionized on AWS as a Senior React Developer. Enterprise / .NET Modernization: 15+ years working across .NET systems, including Soley Cleaning, Solar4Goods, Cosmicfinite, now applied to migrating legacy platforms into modern React/Node architectures. HOW I BUILD - As a React Developer: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux, responsive design, component-driven architecture. - As a MERN Developer: MongoDB, Express, React, Node.js, REST APIs, Redis. - As a SaaS Developer: multi-tenant architecture, subscription billing, Stripe/payment integration, Docker, AWS, CI/CD, Git. - As a .NET Developer (15+ years, past and current): C#, ASP.NET Core, Entity Framework, SQL Server, the enterprise foundation behind every migration and architecture decisions I make on the MERN side.

I help startups turn React/Next.js frontends into production-ready SaaS platforms with real backend architecture behind them, not just API calls duct-taped to someone else's system. 🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 · ✅ 𝟓𝟎+ 𝐣𝐨𝐛𝐬 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 · ⏳ 𝟏𝟓+ 𝐲𝐞𝐚𝐫𝐬 𝐬𝐡𝐢𝐩𝐩𝐢𝐧𝐠 𝐟𝐮𝐥𝐥 𝐬𝐭𝐚𝐜𝐤 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 Most "full stack" developers own the frontend and hand off the backend to someone else. I own both - React/Next.js on the frontend, .NET Core or Node.js on the backend, deployed and production-ready end to end. That means fewer handoffs, faster iteration, and a system that's architected consistently from database to UI instead of stitched together. ──────────────────────────────── 𝐑𝐎𝐋𝐄𝐒 𝐈 𝐓𝐀𝐊𝐄 𝐎𝐍 (𝟏𝟓+ 𝐘𝐄𝐀𝐑𝐒 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄) ──────────────────────────────── ✔ Full Stack Developer / Full Stack Engineer ✔ React Developer / React.js Developer / Next.js Developer ✔ Frontend Developer - component architecture, state management, performance ✔ .NET Developer / .NET Core Developer / C# Developer (backend & full stack) ✔ SaaS Developer / Multi-Tenant SaaS Architect ✔ Angular Developer (8–20) for teams standardized on Angular ──────────────────────────────── 🛠️ 𝐂𝐎𝐑𝐄 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 ──────────────────────────────── Frontend: React.js, Next.js, Angular, TypeScript, JavaScript, Tailwind CSS Backend: .NET Core, ASP.NET Core, C#, Node.js, Web API, Entity Framework, Microservices, REST APIs Cloud & DevOps: Microsoft Azure, AWS, Docker, CI/CD Database: SQL Server, PostgreSQL, MongoDB Also comfortable with: Python (FastAPI, Django, Flask) used when a project calls for it ──────────────────────────────── 🚀 𝐏𝐑𝐎𝐉𝐄𝐂𝐓𝐒 𝐈'𝐕𝐄 𝐃𝐄𝐋𝐈𝐕𝐄𝐑𝐄𝐃 ──────────────────────────────── 🔹 𝐍𝐢𝐧𝐣𝐚𝐃𝐀𝐌 - Multi-tenant SaaS, AWS S3/CloudFront, subscription billing. Solved schema-per-tenant isolation so tenant data never crosses. 🔹 𝐗𝐞𝐧𝐨𝐩𝐡𝐨𝐧 - Legal transcription platform, real-time AI (Whisper, Google STT). Solved speaker ID accuracy for court-admissible transcripts. 🔹 𝐀𝐜𝐞𝐌𝐌𝐈 - AI coaching platform, OpenAI-powered scoring across 8 competencies. Rebuilt the async queue after serverless timeouts broke under load. 🔹 𝐑𝐨𝐬𝐞 𝐏𝐎𝐒 - Restaurant POS system, React + Electron + FastAPI. Built a print queue with retries so a jammed printer never blocks an order. 🔹 𝐅𝐋𝐗 𝐍𝐞𝐭𝐰𝐨𝐫𝐤𝐬 - B2B wealth management platform, React + Node + AWS/Azure. Unified fragmented multi-party workflows into a single coherent system. 🔹 𝐕𝐚𝐬𝐭 𝐀𝐝𝐯𝐢𝐬𝐨𝐫 - Compliance SaaS for investment advisors, Blazor + .NET. One shared data layer powering independently operating client dashboards. 🔹 𝐋𝐎𝐊𝐑 - IoT smart parcel locker SaaS, FastAPI + React. Cut failed deliveries 80% by fixing real-time state sync between hardware and software. 🔹 𝐌𝐨𝐧𝐭𝐚𝐠𝐞 - Software licensing & digital commerce platform, ASP.NET + SQL Server. Automated the full license lifecycle with zero payment calculation errors. 🔹𝐑𝐚𝐩𝐫𝐨𝐝 - B2B marketplace with a real-time bidding engine. Held pricing accuracy under concurrent buyer/supplier load. 🔹 𝐎𝐧𝐭𝐫𝐚𝐜𝐤 𝐂𝐚𝐫𝐞𝐞𝐫𝐬 - Rescued a broken AI career platform. Fixed auth (OTP, OAuth, subscription bypass) without a full rewrite. 🔹𝐂𝐫𝐞𝐰 𝐏𝐥𝐚𝐧𝐧𝐞𝐫 - Maritime fleet & crew management, Angular + .NET. Built certification-expiry logic that correctly cascades across assignments. 🔹 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐚 - AI analytics dashboard for university career centers. Replaced manual spreadsheets with role-filtered predictive reporting. ──────────────────────────────── 🏆 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄 ──────────────────────────────── ✅ Top Rated Plus - 50+ jobs completed on Upwork ✅ 15+ years shipping production frontend + backend systems ✅ Comfortable owning a project end-to-end or slotting into an existing team ✅ Enterprise client feedback: "demonstrated excellent technical knowledge and professionalism. Delivered high-quality work on time and was reliable throughout" ✅ Several contracts have run 6+ months, clients keep me on past the first milestone ✅ Clear communication, honest scoping, no surprises If you need a Full Stack Developer who can own a React frontend and a real backend behind it, send me your project and I'll respond within a few hours.

🏆 Top Rated Plus | 100% Client Feedback | 3000+ Hours I help businesses build fast, scalable .NET applications—and extend them to web, mobile, and AI-powered systems when needed. With 7+ years of experience, I’ve delivered 50+ applications used by startups and enterprises, including platforms handling 1M+ users and millions of daily transactions. If you need someone who can design, build, and scale your system end-to-end, I can help. 💡 What I Can Help You With Build or improve ASP.NET Core / Web API / microservices Develop modern Angular or React frontends Build cross-platform apps using .NET MAUI , Blazor (Android, iOS, Windows) Add AI features (chat, automation, semantic search, workflows) Fix performance issues (30–40% improvements in real projects) Design scalable architecture for SaaS or enterprise systems 🧠 Practical AI Integration I focus on AI where it actually creates business value: AI-powered APIs and backend workflows Semantic search with vector databases (Azure AI Search, Pinecone) Automation to reduce manual work Secure, production-ready integrations (OpenAI, Azure OpenAI) ⚙️ Core Tech Stack Backend: C#, ASP.NET Core, Web API, Entity Framework, Microservices Frontend: Angular, React, JavaScript Mobile: .NET MAUI (cross-platform apps) Cloud & DevOps: Azure, AWS, Docker, CI/CD Database: SQL Server (performance optimization), MySQL 📈 Proven Results 50+ applications delivered Systems handling 1M+ users & high-scale traffic Database performance improved by 40%+ Experience working across 100+ repositories in team environments 🎯 What It’s Like Working With Me Clean, scalable architecture (not quick fixes) Clear communication and reliable delivery Strong debugging and performance optimization Practical solutions focused on your business goals 🚀 Let’s Talk Whether you’re: Launching a new SaaS Building a web + mobile app (MAUI) Adding AI features Fixing performance issues Send me a message, and I’ll suggest a practical approach based on your goals.

Senior .NET Developer with 10+ years of experience building enterprise software, cloud-based systems, and high-performance backend solutions using C#, .NET Core, Azure, React, Angular, and SQL Server. I help startups, SaaS companies, and enterprises build secure, maintainable systems designed for long-term growth - whether that's a new application, modernizing a legacy system, backend API development, Azure cloud deployment, or full-stack work with React or Angular. I also use AI-assisted workflows with Cursor and Claude to speed up development, accelerate debugging, and reduce repetitive work without sacrificing code quality. WHAT I SPECIALIZE IN Backend API development (REST and GraphQL) Full-stack development with React and Angular Cloud-native applications on Azure Modernization of legacy applications Multi-tenant SaaS architecture Microservices and event-driven architecture Entity Framework Core and SQL Server database design Third-party API integrations Authentication, authorization, and Azure AD integration CI/CD pipelines and performance optimization CORE TECHNOLOGIES Backend: C#, .NET Core (.NET 6/7/8), ASP.NET Core, Web API, Entity Framework Core, LINQ, Dapper Frontend: React, Angular, JavaScript, TypeScript, Blazor Database: SQL Server, PostgreSQL, MySQL, MongoDB Cloud & DevOps: Azure App Services, Azure Functions, Azure DevOps, Docker, Kubernetes, AWS Architecture: Clean Architecture, Domain-Driven Design, CQRS, SOLID Principles, Microservices Security: JWT, OAuth2, Azure AD, Role-Based Access Control AI Tools: Cursor, Claude WHAT YOU GET Clean, well-documented, maintainable code Scalable backend architecture built for growth Secure authentication and authorization by default Enterprise-grade engineering standards Faster delivery through AI-assisted workflows, without cutting corners PROJECT EXPERIENCE -Property Management SaaS Platform - multi-tenant architecture with role-based dashboards, reporting systems, and tenant management, built with .NET Core, React, Angular, Azure, and SQL Server -Employee PDP Management System - planning modules, approval workflows, reporting, and secure access management -School Management Platform - full .NET Core application with authentication, teacher/student portals, scheduling, and admin dashboards, built on MySQL with Clean Architecture -Enterprise Internal Systems - integrated with Azure AD, SharePoint, HR platforms, insurance systems, and third-party APIs -API Integrations - Stripe, PayPal, CRMs, and enterprise APIs with secure authentication INDUSTRIES I'VE WORKED WITH SaaS & Product Development, Property Management & Real Estate, HR & Workforce Management, Education Technology, Insurance Software, Enterprise Internal Systems, Business Automation If you need a Senior .NET Developer who understands both business requirements and technical architecture, send me your project details - I'll help you define the right approach and build it right the first time.