Hire the Best Full Stack .NET Developers

Hello, I’m Raj Narayan Gupta, a Full Stack Developer with more than five years of experience in designing and developing modern web applications. I build fast, secure, and scalable solutions using .NET technologies and cloud platforms like Azure and AWS. I have a strong command over C#, ASP.NET Core, Blazor, and React, and I enjoy working on both backend and frontend parts of a project. My approach focuses on writing clean, maintainable code, optimizing performance, and ensuring smooth deployment through modern DevOps practices. Core Skills and Expertise ASP.NET Core MVC, Razor Pages, Blazor Microservices, CQRS, Repository Pattern, SignalR, RabbitMQ RESTful API development and third-party integrations React.js, TypeScript, JavaScript (ES6+), and responsive UI design SQL Server, MySQL, Entity Framework Core Azure App Services, AWS Elastic Beanstalk, Dokploy, CloudPanel, S3, and CI/CD pipelines What I Can Help You With Building new web applications from the ground up Refactoring or upgrading existing .NET projects Designing and integrating REST APIs Implementing authentication and authorization (JWT, OAuth, Identity) Database design, optimization, and migration Fixing bugs, improving performance, and maintaining reliability Why Work With Me I have a solid understanding of .NET architecture and full-stack development, allowing me to deliver solutions that are both scalable and efficient. My work is guided by attention to detail, clear communication, and a focus on client satisfaction. I’m comfortable collaborating in agile environments and taking ownership of complete project lifecycles. If you’re looking for a developer who understands business goals as well as technology, I’d be happy to help you bring your project to life. Let’s discuss how we can work together to build something great.

🌟 Senior Full-Stack Engineer & Solution Architect | .NET, React, Azure | AI-Assisted Development 💬 “Nitin is an exceptional developer with deep architectural insight—delivers efficient, scalable solutions and communicates complex ideas clearly.” — Dhwani K., BCG 👋 Hi there, thank you for checking out my profile! I’m Nitin, a Senior Full-Stack Engineer (11+ years) helping businesses modernize legacy systems, ship modern React frontends, and build secure .NET + Azure backends—always with a strong architectural foundation and future-ready design. I’ve delivered projects for Microsoft, BCG, Harman, Nagarro, Digital Juice, BusyBoxx, Lutron, McCarthy & Vaughn, and MROCorp across industries including healthcare, airlines, lighting/IoT, construction, and e-commerce. ✨ My differentiator: I combine proven engineering practices with AI-assisted development (Copilot, ChatGPT, Cursor) to accelerate productivity, improve documentation, and deliver enterprise-ready solutions faster. ✅ What I Do (Full-Stack End-to-End) ⚛️ Frontend Engineering → Responsive UIs with React, TypeScript, MUI5, Tailwind, TanStack (Query, Table, Virtual), and advanced charting. Migrated old ASP.NET/Angular apps to React/Angular latest with better performance and usability. 🖥️ Backend & APIs → Robust .NET 6/8 Web APIs, EF Core, Dapper, SQL Server—modular, secure, and scalable. Skilled with microservices and modular monolith architectures. 🗄️ Database & Search → Expertise in SQL Server, MongoDB, Elasticsearch, Redis for high-performance queries and intelligent search features. ☁️ Cloud & DevOps → Deployments on Azure App Services, AKS with Pods, IIS, Docker, CI/CD pipelines. Focused on secure, observable, and highly available systems. 🔐 Identity & Security → Migrated legacy ASP.NET/custom auth to OpenID Connect / OAuth 2.0 / JWT with ASP.NET Identity. Implemented RBAC and SSO-ready solutions. ⚡ AI-Driven Productivity → Leveraging Copilot, ChatGPT, Cursor AI to accelerate development, streamline testing/documentation, and deliver enterprise-ready solutions faster. 🚀 Recent Highlights 🏗️ McCarthy Vaughn Constructions → Delivered Safety Audit & Leadership Engagement modules with React + .NET 8 + SQL Server. Migrated from ASP.NET WebForms to modern stacks, deployed on Azure, and implemented reporting, user management, and authentication modernization. 💡 Lutron (Lighting & IoT) → Migrated legacy .NET Framework & Angular apps to React, Angular latest, and .NET 8 with a microservice architecture and secure token-based authentication. ✈️ Airlines (BCG) → Built shared libraries and data-heavy React UIs (ZBN, Pathfinder, Sentry) for real-time operations and disruption management. 🖊️ Microsoft (Virtuoso) → Designed a dynamic UI framework rendering configurable screens from JSON, added SQI/RAID/review workflows, and deployed to Azure cloud-native environments. 🛒 E-commerce (Digital Juice/BusyBoxx) → Delivered Elasticsearch + Redis search/admin tools, boosting content discovery and reducing infrastructure costs. 🏥 Healthcare (MROCorp, Nagarro) → Architected HIPAA-compliant APIs, audit logging, and modernization strategies for enterprise-grade healthcare applications. 🛠 Tech Stack (Keywords) Frontend: ⚛️ React, TypeScript, MUI5, Tailwind, TanStack, Charting, Angular Backend: 🖥️ .NET 6/8, .NET Framework, C#, EF Core, Dapper, Node.js/Fastify Cloud/DevOps: ☁️ Azure App Services, AKS with Pods, Service Bus, APIM, Functions, IIS, Docker, CI/CD Databases: 🗄️ SQL Server, MongoDB, Elasticsearch, Redis Architecture: 🏗️ Clean Architecture, Microservices, Modular Monolith, Caching, Telemetry, Secure Auth Domains: ✈️ Healthcare, Airlines, Construction, Lighting/IoT, E-commerce, Media 💼 Why Work With Me? ✔️ 11+ years delivering enterprise-grade solutions across industries ✔️ Proven expertise in legacy → modern migration (.NET Framework → .NET 8, Angular/ASP.NET → React/Angular latest) ✔️ Cloud-native delivery across Azure App Services, AKS, IIS, and Docker ✔️ Strong foundation in architecture, scalability, security, and compliance ✔️ Endorsed with LinkedIn recommendations highlighting technical excellence & leadership 📞 Let’s Connect If you’re looking for a full-stack partner who can modernize legacy systems, build new cloud-native applications, and deliver with AI-enhanced speed and precision, let’s talk. I’ll propose a clear, phased plan tailored to your project and business goals. Best Regards, Nitin R

Full Stack .NET Developer | ASP.NET Core, C#, Blazor, Angular, Azure | I build secure, scalable web apps, APIs, and cloud solutions that modernize legacy systems and accelerate business growth. 📌 Legacy apps that need upgrading to .NET 8 / ASP.NET Core? ☁️ Slow, unscalable systems that must migrate to Azure or AWS cloud? 🔌 Complex integrations with REST APIs, GraphQL, or Microservices? 📊 Inefficient databases needing SQL Server optimization, Entity Framework, or NoSQL? 🤝 Frustrations from developers who miss deadlines or fail to communicate? 💡 𝐒𝐎𝐋𝐔𝐓𝐈𝐎𝐍𝐒 𝐁𝐀𝐂𝐊𝐄𝐃 𝐁𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄: .NET Core & Blazor Development → Scalable, next-gen enterprise applications Cloud-Native Apps → Deployments on Azure Functions, AWS Lambda, Docker, Kubernetes API-First Development → REST APIs, GraphQL, gRPC, and 3rd-party integrations (Stripe, PayPal, Twilio, Google APIs) Modern Front-End → Angular, React, Vue, Next.js, Tailwind for responsive, pixel-perfect UI/UX Enterprise Solutions → ERP, CRM, SaaS, E-commerce, Workflow Automation AI & Data Integration → ChatGPT APIs, ML.NET, Power BI dashboards, analytics pipelines Database Mastery → SQL Server performance tuning, Stored Procedures, NoSQL (MongoDB, Firebase, Redis) 🔧𝐌𝐘 𝐒𝐊𝐈𝐋𝐋 𝐒𝐄𝐓: Back-End: ASP.NET Core, MVC, Web API, Blazor, Entity Framework, LINQ Front-End: Angular, React, Vue.js, Next.js, TypeScript, Tailwind CSS Cloud & DevOps: Azure (Functions, Logic Apps, Cosmos DB), AWS (Lambda, S3, EC2), Docker, Kubernetes, CI/CD pipelines (Azure DevOps, GitHub Actions) Databases: SQL Server, PostgreSQL, MySQL, MongoDB, Firebase, Redis Other Tools: GitHub, GitLab, Bitbucket, Swagger, Postman, JIRA, Trello Whether it’s modernizing your existing system, building APIs, or deploying to Azure/AWS, I ensure your applications are ready for growth and long-term success. From legacy upgrades to full-stack development and cloud migration, I build future-proof solutions that combine performance, security, and scalability.

I help businesses build scalable, high‑performance, and maintainable web applications using .NET, ASP.NET Core, Angular, and Azure. With 10+ years of experience in full‑stack development, backend architecture, REST API development, and cloud deployment, I focus on delivering solutions that are clean, reliable, and built for long‑term growth. My core expertise includes: - .NET and ASP.NET Core development - Angular front‑end development - RESTful API design and integration - Azure cloud services and deployment - SQL Server database design and optimization - Legacy system modernization - SaaS and enterprise application development I have worked on enterprise web applications, microservice‑based solutions, and performance‑focused systems where scalability, security, and maintainability matter most. If you need a Senior .NET Full Stack Developer who understands both technical execution and business impact, I can help turn your requirements into a solid product.

I'm a Full Stack Developer and .NET Developer with 10+ years building web applications that businesses actually run on. I take an idea and ship it — front end, back end, database, deployment — and I've done it for products still serving customers a decade later. ✦ WHAT I DO BEST My core stack is .NET and C#. As a .NET Developer I build secure, scalable back ends with .NET Core and ASP.NET Core, expose them as clean ASP.NET Web APIs (REST), and back them with Entity Framework and SQL Server, PostgreSQL. As a Full Stack Developer I pair those APIs with responsive front ends in Angular, React, or Blazor, then deploy and scale on Azure with Azure DevOps, Docker, and CI/CD. When a product needs AI, I wire proven models — often through a thin Python layer — into the application without breaking what already works. And when a templated WordPress or Shopify build has hit its ceiling, teams bring me in to rebuild it as a custom .NET web application that can actually grow. ✦ PROOF OF WORK Longevity is the point. I once took a rough idea from an automotive client and built it into an e-commerce platform that has served customers for nearly 15 years and still runs today. As the lead .NET Developer on Launch Control, a real-estate SaaS, I refactored the core and made the system 50x faster. I also built SiftScore, an AI-powered talent-acquisition platform that uses the OpenAI API to source and score large datasets. Across fintech, real-estate, and healthcare I've owned the full lifecycle as a Full Stack Developer: requirements, architecture, build, go-live. 🚀 SaaS MVP (From Idea → Production) When a client starts from a rough idea, I take it the full way: requirements, architecture, prototyping, build, and go-live on Azure. As a Full Stack Developer I've shipped .NET SaaS MVPs for fintech, real-estate, and conveyancing platforms — clean, maintainable code with the scalability and monitoring to grow once real customers arrive. ✦ AI Integration for Existing Products I add AI features when a product actually needs them. The fastest, most cost-efficient path is usually integrating a proven model — OpenAI, Claude, or Gemini, often through a thin Python layer — rather than training your own. I add chatbots, automation, and smart search to existing web apps. Most AI features fail not because of the model but because the surrounding .NET architecture wasn't built to support it — and that's where a senior Full Stack Developer earns their keep. ⚙️ Modernizing Existing .NET Systems - without the rewrite If you have a .NET or C# application that needs work, I optimize performance, refactor legacy code, upgrade aging ASP.NET back ends, and migrate data access to Entity Framework Core — refactored against SOLID principles, without freezing feature work. Stuck on an old ASP.NET WebForms app? You don't have to gamble on a big-bang rewrite. As a .NET Developer I migrated a WebForms spare-parts store — 20M+ products across 100+ suppliers — to ASP.NET MVC by running both side by side in one solution, so the business kept selling while the modernization happened underneath it. The same incremental approach moves teams off PHP, Laravel, or legacy WordPress builds and onto a maintainable .NET stack: ship value continuously, retire old code gradually, never go dark. ✦ Legacy .NET project modernization Old code isn't the enemy — downtime is. As a .NET Developer, I modernize legacy ASP.NET and ASP.NET MVC systems by introducing a clean API layer, migrating data access to Entity Framework Core, and refactoring against SOLID principles, all without freezing feature work. As a Full Stack Developer, I migrate the application page by page behind a feature flag, so new and old run together in production and you can switch any screen over — or roll it back instantly — without disrupting users. Whether it's an ASP.NET MVC application that has grown brittle or a WebForms system that needs a path forward, I find the route that lowers risk: incremental, tested, and reversible at every step. ✦ ENTERPRISE-GRADE .NET ARCHITECTURE My work as a Full Stack Developer goes deeper than features. On a large enterprise fintech platform built on microservices, as a Full Stack Developer I designed how the team builds — onboarding developers, setting architectural standards, and structuring a clean, maintainable .NET codebase that scales. As a .NET Developer with a decade across .NET Framework, .NET Core, ASP.NET, and ASP.NET MVC, plus an M.Sc. in Applied Mathematics behind the design decisions, means I build systems meant to last years, not quarters. I focus on web rather than native mobile apps in Flutter or React Native; on the .NET side I also ship cross-platform with .NET MAUI. I'm a web developer — my C# and .NET expertise powers web applications. ✦ HOW WE'LL WORK If you need a Full Stack Developer or .NET Developer who can take something from rough idea to production — and keep it running for years — let's talk about the fastest path to shipping it.

✅ Top Rated Plus | 100% Job Success | 6,500+ hours | $200K+ earned on Upwork ✅ Senior .NET Engineer: 17 years building backends that scale under real load ✅ Architecture-level work: high-traffic APIs, system integrations, SQL performance ✅ Delivered for Tractor Supply (Fortune 500), Allivet & Edible Arrangements I build .NET backends that stay fast and correct when the load is real. Most of my work is the hard part, the systems that handle traffic, money and third-party integrations without falling over, and clients usually bring me in when something is slow, duplicating data, or breaking at peak. 𝗥𝗲𝗰𝗲𝗻𝘁 𝗪𝗼𝗿𝗸 ➜ Allivet & Tractor Supply (Fortune 500): Multi-Tenant REST API Tech: ASP.NET Core (.NET 6), Azure Service Bus, Redis, Azure Functions, SQL Server, Splunk 🔹Stopped duplicate orders during request retries by adding idempotency keys 🔹Moved slow blocking calls onto Service Bus with background workers to cut response times 🔹Used Redis caching and Azure Functions to keep products, customers and subscriptions syncing reliably to the Salesforce Commerce storefront ➜ Allivet Web Admin: E-Commerce & Subscription Platform Tech: .NET Core, Web API, SQL Server, Azure, CommerceHub, Deposco 🔹Integrated CommerceHub payment gateway: card tokenization, authorization, capture, void and refund 🔹Connected Deposco warehouse management and rebuilt the financial posting process 🔹Ran the full catalog, orders, autoships, inventory and warehouses end to end ➜ Franchise Management System (ERP): used by 150+ international clients Tech: ASP.NET MVC, Web API, Azure, SQL Server 🔹Architected and optimized the central platform serving 150+ franchise clients worldwide 🔹Exposed REST APIs for mobile apps using Repository, Unit of Work and Singleton patterns 🔹Built the supporting systems too: video training (Wowza streaming), field audit tools, and a marketplace with Amazon Pay and BlueSnap ➜ County Taxation Filing System Tech: ASP.NET Core, Azure Functions, Logic Apps, Angular 10, SQL Server 🔹Built yearly tax filing with PDF generation and historical data imports 🔹Rebuilt a batch engine that brought large-scale query processing down from minutes to seconds 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝐇𝗶𝗿𝗲 𝗠𝗲 ✔ End-to-end ownership: from architecture and database design through to deployment, not just the coding in the middle ✔ I solve the hard backend problems: idempotency, event-driven sync, the outbox pattern, background jobs, multi-database setups, and SQL that's slow under load ✔ AI-augmented delivery: I use Claude Code and GitHub Copilot every day to move faster on scaffolding, refactoring and debugging, and I review everything they produce ✔ Clear and reliable: regular updates, no surprises, no ghosting 𝗖𝗼𝗿𝗲 𝗦𝘁𝗮𝗰𝗸 ASP.NET Core, C#, Web API (REST & SOAP), SQL Server, Entity Framework, Azure (Service Bus, Functions, App Service, Logic Apps), Redis, Angular, Splunk If you've got a .NET system that's slow under load, an integration that keeps failing, or an API that needs to scale, send me the details and I'll tell you how I'd approach it.