Hire the Best .NET Developers

Hello and welcome! 👋 I enjoy helping startups and enterprises transform complex business challenges into scalable SaaS platforms, enterprise applications, and workflow automation systems using ASP.NET Core, Angular, React, Azure, and modern cloud technologies. With 20+ years of experience in software architecture and full-stack development, I specialize in building secure, high-performance, and scalable systems designed for long-term business growth. My expertise includes: ✔ SaaS Application Development ✔ Enterprise Web Applications ✔ Workflow Automation Systems ✔ ERP & CRM Platforms ✔ REST APIs & Microservices ✔ AI-Integrated Business Applications ✔ Real-Time Dashboards & Reporting ✔ Cloud-Native Platforms on Azure & AWS Tech stack: ASP.NET Core, .NET 8, Angular, React, Next.js, PostgreSQL, SQL Server, Azure, AWS, Docker, CI/CD. I have delivered solutions across logistics, healthcare, manufacturing, hospitality, education, transportation, AI, and enterprise automation industries. Clients work with me for: ✔ Scalable architecture ✔ Clean & maintainable code ✔ Secure enterprise systems ✔ Business-focused development ✔ Long-term technical reliability Recent projects include: • Logistics & fleet tracking systems • Maritime inspection platforms • Reservation & booking SaaS applications • ERP & workflow automation systems • AI-powered applications • POS & inventory management platforms If you're building a SaaS platform, enterprise application, or automation system and need an experienced technical partner who can design scalable architecture and deliver reliable solutions, feel free to send me a message with your project details. I’d be happy to discuss the best technical approach for your product and help turn your idea into a scalable solution.

🏆 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.

If your .NET system is slow, breaking under load, or needs a React or Node.js frontend built right - I have solved that exact problem 50+ times. 50+ completed jobs. 100% Job Success Score. $100K+ earned. Top Rated Plus since 2021. You work directly with me - not a team you've never met. ──────────────────────────────── WHAT I DELIVER ──────────────────────────────── ✔ ASP.NET Core & C# backend - enterprise APIs, microservices, clean architecture ✔ React.js & Next.js frontend - SaaS dashboards, portals, admin panels ✔ Angular development - v6 to v18, enterprise dashboards, complex SPAs ✔ Node.js backend - REST APIs, Express.js, real-time systems, WebSockets ✔ FastAPI & Python backend - async APIs, AI integrations, data pipelines ✔ .NET modernization - legacy .NET Framework to ASP.NET Core cloud- native ✔ Azure & AWS cloud - App Services, Functions, EC2, S3, Lambda, DevOps ✔ Full stack .NET + React - end to end, architecture to production ✔ SaaS development - multi-tenant, subscriptions, RBAC, billing systems ✔ AI/ML integration - OpenAI API, Python, TensorFlow, FastAPI, Scikit-learn ✔ Database architecture - SQL Server, PostgreSQL, MongoDB, CosmosDB, Redis ✔ CI/CD pipelines - Azure DevOps, GitHub Actions, Docker, Kubernetes ✔ Third party integrations - Stripe, Salesforce, DocuSign, Twilio, Google APIs ──────────────────────────────── LIVE PROJECTS DELIVERED ──────────────────────────────── ✔ Immigration Consultation Marketplace - multi-role platform with .NET + Angular + React, full stack architecture ✔ Ontrack Careers - AI mentorship platform with booking engine, scheduling, and OpenAI integration ✔ Rose POS - enterprise restaurant kiosk with shift-based cash tracking and Stripe payment flows ✔ Raprod - B2B manufacturing marketplace with real-time bidding engine, React + Node.js ✔ Ninja DAM - multi-user digital asset management SaaS, React + Node.js + AWS ✔ Acemmi - AI interview coaching platform with scoring pipeline, OpenAI API + React + Node.js ✔ Promo Standards SOAP API - enterprise-grade integration, .NET + C#, 500+ hours delivered ✔ Stripe Payment Integration - .NET MAUI enterprise mobile application, end to end ──────────────────────────────── TECH STACK ──────────────────────────────── BACKEND C# · ASP.NET Core · .NET Core · .NET 8 · Web API · Entity Framework · Node.js · Express.js · FastAPI · Python · GraphQL · Microservices · SignalR FRONTEND React.js · Next.js · Angular v6–v18 · TypeScript · JavaScript ES6+ · Tailwind CSS · Redux · Material UI DATABASE SQL Server · PostgreSQL · MongoDB · MySQL · CosmosDB · DynamoDB · Redis CLOUD & DEVOPS Azure App Services · Azure Functions · Azure DevOps · AWS EC2 · S3 · Lambda · RDS · Docker · Kubernetes · CI/CD · GitHub Actions · Linux AI & ML Python · TensorFlow · Scikit-learn · FastAPI · OpenAI API · Predictive Analytics INTEGRATIONS Stripe · Salesforce · DocuSign · Twilio · SendGrid · Google APIs · SOAP APIs · Webhooks · REST APIs SPECIALIZATIONS ASP.NET Core Developer · C# Developer · .NET Core Developer · Full Stack .NET Developer · React Developer · Angular Developer · Node.js Developer · Azure Developer · SQL Server Developer · Entity Framework Developer · SaaS Developer · Enterprise Developer · Legacy Migration Developer · Microservices Developer · REST API Developer ──────────────────────────────── WHY CLIENTS CHOOSE ME ──────────────────────────────── ✔ 100% Job Success Score - 49 completed jobs, Top Rated since 2021 ✔ Proactive communication at every milestone - clients never chase me for updates ✔ I find the real problem, not just the reported one - root cause fixes that prevent future issues ✔ Architecture decisions that save expensive rewrites at scale ✔ Available and responsive - fast turnaround, clear timelines, no surprises ✔ You work directly with me - no handoffs, no juniors ──────────────────────────────── READY TO START? ──────────────────────────────── Share your project. I'll review it and tell you exactly what I'd build, how long it takes, and what it costs. Senior .NET Developer · Full Stack .NET Developer · ASP.NET Core Developer · ASP.NET MVC Developer · C# Developer · .NET Core Developer · .NET Backend Developer · REST API Developer · Microservices Developer · Enterprise Application Developer · SaaS Developer · Azure .NET Developer · Cloud Application Developer · Legacy Migration Developer

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.

♛ 𝐓𝐎𝐏-𝐑𝐀𝐓𝐄𝐃 𝐏𝐋𝐔𝐒 🥇 Microsoft Certified Professional🥇 100% Job Success Ratio 🕐 15,000+ Upwork Hours 🏆 100+ Happy Clients Globally 🏆 All 5 Star Ratings & Reviews I am Harsh, a Microsoft Certified Full Stack Developer with 14+ years of experience building AI Powered Enterprise Communication SaaS platforms/VoIP Systems, AI development, Dashboards, E-commerce platforms, AI Voice Agents, and scalable web applications. I specialize in developing real-world AI solutions using OpenAI, LLMs, AI Agents, Voice AI, RAG systems, workflow automation, and modern full stack technologies. My focus is not just building features, but creating scalable systems that solve actual business problems, automate operations, improve user experience, and support long-term product growth. Also, I worked on a healthcare IoT projects where real time devices were connected through Azure IoT Hub using DPS, X.509 authentication, PostgreSQL, Event Hub, private networking, monitoring, and secure healthcare-grade infrastructure. 🥇I have strong hands-on experience with: ➤ AI SaaS Platforms ➤ AI Voice Agents & Chatbots ➤ OpenAI / GPT / LLM Integrations ➤ LangChain & RAG Systems ➤ Workflow Automation ➤ CRM & Business Platforms ➤ Multi-tenant SaaS Architecture ➤ REST APIs & Scalable Backend Systems 🥇𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: ➤ React.js / Next.js ➤ Angular ➤ TypeScript ➤ Redux ➤ Material UI / Ant Design ➤ Blazor 🥇𝗕𝗮𝗰𝗸𝗲𝗻𝗱: ➤ Node.js / Express.js / NestJS ➤ C# / ASP.NET Core / .NET MVC ➤ Python ➤ REST APIs & Microservices 🥇𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: ➤ PostgreSQL ➤ MongoDB ➤ MySQL ➤ Cosmos DB ➤ DynamoDB ➤ Vector Databases 🥇𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: ➤ OpenAI APIs ➤ AI Agents ➤ Voice AI Systems ➤ Embeddings & Vector Search ➤ RAG Pipelines ➤ Prompt Engineering ➤ AI Workflow Automation 🥇𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: ➤ AWS & Azure ➤ Docker & Kubernetes ➤ CI/CD Pipelines ➤ Azure DevOps ➤ Serverless Architecture 🥇I have worked across industries including: ➤ Healthcare ➤ AI & Automation ➤ Communication Platforms ➤ Fintech ➤ E-commerce ➤ Telecommunication ➤ ERP & Business Management Systems I focus on clean architecture, scalable systems, practical implementation, and long-term maintainability while keeping communication transparent throughout the development process. 🚀 .NET | Node.js| Python | React.js | Angular | Next.js | TypeScript 🤖 AI SaaS | AI/ML| LLM | OpenAI | AI Chatbots | AI Voice Agents | RAG Systems 📞 Twilio | Vapi | Retell AI | Communication Platforms | Workflow Automation 📊 Enterprise Dashboards | Complex Front-end Development | multi-Tenant SaaS ⚙️ Backend Architecture | REST APIs | PostgreSQL | MongoDB | Docker | Azure | AWS| Railway 🏗️ CRM | ERP | Healthcare | FinTech | Real-time Systems | Web Applications 🏥 Healthcare IoT | Azure IoT Devices | Real-Time Dashboards |

Individual with 27,000+ hours worked on Upwork with 100% JOB SUCCESS. My experiences: ✓ OOP and System Design; ✓ Theoretical knowledge and practical experience with design patterns; ✓ Asynchronous and multithreading development (TPL); ✓ Rest API design, architecture and implementation; ✓ 3rd party API integration using existing packages or from scratch; ✓ Microservices and monolith architectures; ✓ GIT (Azure DevOps, github, bitbucket), SVN and TFS version control systems; ✓ .NET / .NET Core C#; ✓ TypeScript; ✓ JavaScript (jQuery, linq.js, lodash, underscore, moment, HighCharts); ✓ CSS/LESS/SASS, Bootstrap, Bootswatch; ✓ XML, XSLT, Serialization/Deserialization (XML, Binary, JSON); ✓ ASP.NET Core; ✓ ASP.NET MVC / Web API; ✓ AngularJS 1.x, Angular 2-21; ✓ React (basic); ✓ Kendo UI (JS and ASP.NET MVC wrapper) and DevExtreme; ✓ Bootstrap, Bootswatch; ✓ SMS integration (Twilio, Plivo, SMSru); ✓ Payments integration (Authorize.Net, Chargify, Stripe, Hint, Paymentwall) ✓ Email integration (SendGrid, MailGun, Gmail, custom SMTP); ✓ Reports integration (PowerBI, LogiReports, Crystal Reports); ✓ Medical partners inegration: Hint, Redox, EazyScripts, AthenaHealth, PokitDok, RxNT; ✓ SignalR; ✓ Microsoft Azure (Azure SQL, Azure AD, MobileApp, WebApp, ApiApp, Azure Storage, EventHub, Stream Analytics, Application Insights and others); ✓ AWS (EC2, Load balancer, ECS, S3, DynamoDB, Redis); ✓ WCF and WebServices; ✓ Entity Framework (Full and Core) ✓ LINQ and Dynamic LINQ; ✓ Database architect and optimization including Microsoft SQL/T-SQL; ✓ Caching (Redis); ✓ Brokers: RabbitMQ, MSMQ, Kafka, Azure Service Bus ✓ .NET Desktop (WinForms, WPF: MVVM, MVP); ✓ .NET for MacOs; ✓ Telerik, DevExpress, ComponentOne frameworks for WinForms and WPF; About me: • 16+ years of professional experience in all stages of the SDLC (Software Development Life Cycle) involving studying of the user requirements, analyzing, designing, implementation, testing, deployment, documentation and maintaining of various stand-alone, intranet, client-server and web-based projects with exposure to diverse business domains including Retailing, Medical, Financial and Banking • 12+ years of non-stop experience of working remotely and locally with companies located in USA and Germany • 8+ years of non-stop UpWork experience • Strong skilled in .Net technologies • Experience in developing cross-platform applications • Experience in client / server web-technologies • Solid background in computer science • Ability to work well within tight deadlines and under pressure • Self-motivated • Good team player with excellent coorganizational and mentoring skills • Fluent level of English