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Rajesh R.

Jodhpur, India

$25/hr
4.8
51 jobs

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.

  • .NET Framework
  • Full-Stack Development
  • React
  • Node.js
  • ExpressJS
  • MERN Stack
  • SaaS
  • SaaS Development
  • JavaScript
  • Web Application
  • Docker
  • Python
  • Celery
  • Nuxt.js
  • MongoDB
  • Angular
  • AngularJS
  • ASP.NET
  • Entity Framework
  • Flutter
Ram S.

Mohali, India

$16/hr
4.9
63 jobs

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

  • ASP.NET Web API
  • TypeScript
  • AngularJS
  • Nuxt.js
  • ASP.NET Core
  • Node.js
  • Angular
  • ASP.NET MVC
  • React
  • Entity Framework
  • MongoDB
  • Microsoft Azure
  • Selenium
  • Blazor
  • MVC Framework
  • Umbraco
Hemant V.

Bengaluru, India

$20/hr
5.0
4 jobs

Available to start immediately. I build and fix real .NET & C# software. Click on Invite button to start conversation I’m a .NET Developer and C# Developer with 13+ years of experience working on production systems built in C#/.NET. Most of my work is focused on helping teams make their existing software more stable, scalable, and easier to evolve without risky rewrites. I’ve worked in long-term roles as a C#/.NET developer, often joining projects where the codebase already exists and needs structure, performance improvements, or careful modernization. 🧠 How clients usually come to me Very often, teams reach out to me as a .NET developer when they already have a product written in C#/.NET, but something isn’t working as it should. Changes are slow, bugs appear in unexpected places, or the architecture feels fragile. In those cases, I step in as a C# .NET Developer who understands how real systems grow over time and how to improve them without breaking production. Depending on the scope, I work either as a backend developer focused on logic and performance, or as a .NET Full Stack Developer when both backend and UI decisions need to be handled together. ⚙️ What I do in real projects Day to day, my work as a .NET Developer is very practical. I write and refactor C#/.NET, clean up .NET architecture, improve async flows, and make sure the application behaves predictably in production. In many projects, this naturally turns into .NET full stack work handling backend services, APIs, and UI integration where I step in as a .NET Full Stack Developer. When teams want a modern .NET Full Stack direction without splitting the codebase, I build new features or full applications using .NET MAUI/WPF/WinForms. I’ve worked with .NET apps both for new products and for migrations from older stacks like, where stability matters more than speed. 🧩 Types of systems I’ve worked on Over the years, I’ve worked as a .NET Developer, across different environments: 💻 Desktop software written in C#/.NET 🌐 Web platforms where I worked as a full stack developer on .NET backends 📱 Cross-platform apps built with .NET MAUI (Windows & Android only) 🧱 Larger products that required a true full stack developer approach 🔗 Mixed systems where .NET AI integration was part of the stack 🎮 Internal tools and simulators developed with C# 🤖 Careful use of .NET AI where it actually added value In several projects, I worked in React .NET setups, connecting React frontends to .NET backends while keeping responsibilities clean and clear. 🛠️ How I work with teams and data I’m comfortable joining existing teams and reading unfamiliar C#/.NET codebases. I focus first on understanding why decisions were made, then improving things step by step. I regularly work with SQL server, collaborate with Azure Data Engineer roles, and support data-heavy systems where performance & reliability are critical. This mix of responsibilities often places me in a .NET Full Stack Developer role even when the original task starts as pure backend work. 🛠️ Tech Stack .NET Framework, .NET 6 / 8 / 9 / 10 App Development - WPF, WinForms, WinUI, Blazor, .NET MAUI, MVVM Concurrency & Performance - Multithreading, async/await, Task Parallel Library Hardware & Protocols - Serial, Bluetooth LE, TCP/IP, UDP, RS232, RS422 Architecture & Quality - Clean Architecture, OOP, refactoring, performance tuning Security & Testing - Unit testing, Polaris, Coverity, SAST, DAST, threat modeling Data & Cloud - SQL Server, Azure Tooling - Visual Studio, VS Code, GitHub, GitHub Actions, Docker ✅ Why clients choose to work with me ✨ I think like a long-term .NET Developer, not a short-term task runner ✨ I write C# code that other C# developers can actually maintain ✨ I’m comfortable owning systems as a .NET Full Stack Developer ✨ I communicate clearly and avoid surprises ✨ I leave .NET full stack codebases cleaner and more stable than I found them 📌 Availability ✅ Available now 🌍 Remote-only ⏱️ Open to long-term collaboration If you’re looking for a .NET Developer, who can step into an existing system and improve it safely let’s chat. 👉 Send a message and we’ll review your setup together.

  • C#
  • .NET Framework
  • Windows Presentation Foundation
  • Universal Windows Platform
  • Windows Forms
  • Standalone Application
  • Desktop Application
  • Application Improvement
  • Python
  • Microsoft Visual C++
  • Docker
  • Ubuntu
  • GitHub
  • Android App Development
  • Bash Programming
  • Microsoft Windows PowerShell
  • Prototyping
  • Microsoft Azure
  • PostgreSQL
  • Angular
Vladyslav P.

Wroclaw, Poland

$35/hr
4.9
11 jobs

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.

  • C#
  • .NET Framework
  • Software Development
  • Web Application
  • React
  • Node.js
  • .NET Core
  • API Integration
  • Full-Stack Development
  • ASP.NET MVC
  • ASP.NET
  • ASP.NET Core
  • Angular
  • WordPress
  • Microsoft SQL Server
  • Microsoft Azure
  • JavaScript
  • PHP
  • Python
  • ASP.NET Web API
Manpreet S.

Mohali, India

$25/hr
4.9
58 jobs

Over 10+ years of experience in IT industry, involving in Software Design, Analysis, Development integration and Testing at client and server side in various domains such as transport, finance, etc. My Skills: • Experience in .NET Framework/Core • Experience with C# 10 and .NET 6 and earlier versions • Experience in React, Angular, Node, HTML5, JavaScript and CSS • Windows desktop application development experience • Experience with Windows and WCF services development • Experience in Microservice API and REST services and understanding of containers • Experience with WPF GUI Modular application development • Practical experience using MVVM design pattern and DevExpress WPF controls • Exposure in multi-process .NET applications • Relational database experience MySQL & SQL Server • Understanding of message queues and middleware. • Experience with SDLC tools, like Jira, bitbucket, bamboo Confluence, GIT source control system • XAML-based user interface development experience (e.g., WinUI 3, UWP, WPF) • Experience with LINQ to XML • Understanding of XML schemas (XSD) • Integration with third party softwares like Act, Quick Books, UPS/USPS. • Ability to work independently • Git version control • Solid understanding of testing principles and high-quality software • Excellent written and verbal English communication skills. DEVOPS Experience: 1.) Docker for containerization of projects 2.) GITHUB Actions for CI/CD over Ec2-Instance 3.) AWS CI/CD over S3 bucket 4.) Jenkins for project build and deployment. 5.) Docker-compose for managing and launching micro services using YML compose. 6.) ElasticBeanstalk Worked in an Agile team of .NET developers for a fast-paced software development firm. Worked on 10+ SQL database design projects. Improved speed to complete projects by 35% in 15 weeks. Developed and provided maintenance for 20+ .NET websites/applications, using ASP.NET MVC, jQuery, HTML, and CSS. Achieved 100% client satisfaction and on-time completion. Created remote coding and testing environment with bash and Docker scripts.

  • C#
  • Windows Communication Foundation
  • SaaS
  • ASP.NET MVC
  • Entity Framework
  • Windows Presentation Foundation
  • LINQ
  • Xamarin
  • Telerik
  • Microsoft Azure
  • Blazor
Harsh K.

Panchkula, India

$25/hr
5.0
46 jobs

⭐ Microsoft Certified Professional | ⭐ Top Rated Plus | ⭐ 14+ Years of Experience 𝐈 𝐡𝐞𝐥𝐩 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐞 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧𝐬, 𝐬𝐭𝐫𝐞𝐚𝐦𝐥𝐢𝐧𝐞 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐞 𝐠𝐫𝐨𝐰𝐭𝐡 𝐛𝐲 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, 𝐀𝐈 𝐕𝐨𝐢𝐜𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬, 𝐏𝐎𝐒 𝐒𝐲𝐬𝐭𝐞𝐦𝐬, 𝐈𝐨𝐓 & 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐞𝐝 𝐃𝐞𝐯𝐢𝐜𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬𝐚𝐧𝐝 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬. With over 14 years of experience, I partner with startups, growing businesses, and enterprise organizations to architect, develop, and modernize secure, scalable, and high-performing software solutions. 𝐈 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐢𝐧 𝐝𝐞𝐬𝐢𝐠𝐧𝐢𝐧𝐠 𝐚𝐧𝐝 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠: ✅ Enterprise SaaS Platforms ✅ Internal Business Applications ✅ Enterprise Communication & VoIP Systems ✅ AI Voice SaaS Platforms ✅ Complex Dashboards & Business Intelligence ✅ AI-Powered Automation Solutions ✅ IoT & Connected Device Solutions ✅ Restaurant POS & Hospitality Systems ✅ Azure Cloud & Healthcare Platforms Whether you are launching a new SaaS product, modernizing a legacy application, replacing manual workflows with custom software, integrating AI into your business, or developing an enterprise communication platform, I bring both architectural expertise and hands-on development experience to deliver software that creates measurable business value. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 .NET • C# • ASP.NET Core • React • Angular • Azure • Node.js • Python •AI Automation • AI Agents • Chatbots • OpenAI • Azure OpenAI • Enterprise Communication • VoIP • AI Voice SaaS • Power BI • Twilio • Microservices • SignalR • REST APIs • Stripe 𝐑𝐞𝐜𝐞𝐧𝐭 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 ✔ Vozio (AI Voice SaaS Platform) – Built an AI-powered voice platform that automates bookings, customer inquiries, orders, and interview screening using conversational AI. ✔ Evo.tech (Enterprise Communication Platform) – Developed an AI-powered, multi-channel communication platform that enables intelligent voice, messaging, and customer engagement workflows. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 🚀 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 Multi-tenant SaaS Applications MVP Development Customer & Client Portals Subscription Platforms Admin Dashboards 🏢𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 CRM & ERP Systems HRMS Platforms Inventory Management Workflow Automation Operations Management Business Process Automation ☎ 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐀𝐈 𝐕𝐨𝐢𝐜𝐞 Enterprise Communication Platforms VoIP Systems AI Voice SaaS AI Voice Agents Twilio Integration SIP & WebRTC Virtual Receptionists Call Center Solutions 📊 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 & 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 Executive Dashboards KPI Dashboards Power BI Reporting & Analytics Data Visualization 🤖 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 AI Agents OpenAI Azure OpenAI Conversational AI RAG Workflow Automation 🌐 𝐈𝐨𝐓 & 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐞𝐝 𝐃𝐞𝐯𝐢𝐜𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 IoT Device Integrations Connected Device Platforms Azure IoT Hub Azure Health Data Services Remote Patient Monitoring Medical Device Connectivity Real-Time Data Streaming Device Telemetry & Monitoring Secure Cloud Integration Healthcare IoT Solutions 🍽️ 𝐑𝐞𝐬𝐭𝐚𝐮𝐫𝐚𝐧𝐭 𝐏𝐎𝐒 & 𝐇𝐨𝐬𝐩𝐢𝐭𝐚𝐥𝐢𝐭𝐲 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 Restaurant POS Systems Multi-Location POS Platforms Kitchen Display Systems (KDS) Order & Menu Management Table & Reservation Management Online Ordering & Delivery Integration Payment Gateway Integration Inventory & Stock Management Staff & Shift Management Sales Analytics & Reporting Customer Loyalty & Rewards 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 ✔ Microsoft Certified Professional ✔ Top Rated Plus Freelancer ✔ 14+ Years of Enterprise Software Development ✔ 50+ Enterprise SaaS Platforms Delivered ✔ Enterprise SaaS Architecture ✔ AI Voice & Enterprise Communication Specialist ✔ Internal Business Applications ✔ Complex Dashboards & Business Intelligence ✔ Azure Cloud Solutions ✔ Clean, Secure & Scalable Development ✔ Long-Term Technical Partner 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 Healthcare • Finance • Manufacturing • Logistics • HR • Real Estate • Retail • Education • Enterprise SaaS • AI Startups 𝐋𝐞𝐭'𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 If you are looking for a senior technical partner to architect, build, or modernize enterprise software, I would be glad to help turn your vision into a scalable, secure, and production-ready solution.

  • C#
  • SaaS
  • Point of Sale & Payment Systems
  • Telephone System
  • Dashboard
  • Back-End Development
  • Front-End Development
  • ASP.NET Core
  • Node.js
  • React
  • AngularJS
  • TypeScript
  • REST API
  • Twilio API
  • Database Development
  • Azure DevOps
  • Azure IoT HuB
  • CI/CD
  • Minimum Viable Product
  • AI Development

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.NET developer hiring guide

In the world of enterprise software and scalable web applications, the Microsoft .NET framework remains a dominant force. From Fortune 500 companies to fast-growing startups, businesses rely on .NET developers to build secure, cross-platform applications that drive digital transformation. Whether you need to migrate a legacy system to modern .NET, build a cloud-native web application with ASP.NET Core, or develop mobile apps with .NET MAUI, hiring the right developer is crucial.

What does a .NET developer do?

A .NET developer specializes in building applications using Microsoft's .NET platform. While often associated with the C# programming language, the scope encompasses a vast ecosystem of tools, libraries, and languages designed to create everything from simple desktop applications to complex, cloud-native enterprise systems.

.NET developers manage the full software development life cycle (SDLC), ensuring applications are scalable, secure, and performant. They often:

  • Create web applications using ASP.NET Core to build web apps, IoT solutions, and mobile back ends

  • Manage server-side logic, handle HTTP requests, and integrate with databases like SQL Server while implementing robust authentication protocols

  • Develop desktop applications using Windows Presentation Foundation (WPF) or Windows Forms

  • Develop mobile apps through Xamarin and .NET MAUI, allowing them to write code once and deploy across Android, iOS, and Windows devices

  • Migrate older software to cross-platform .NET environments to improve performance and reduce costs

.NET developers often specialize based on project needs. Back-end specialists focus on server-side logic, APIs, and database architecture, while full-stack developers handle both server and client-side code using frameworks like Blazor or React. Mobile developers use .NET MAUI or Xamarin to create cross-platform iOS and Android applications with shared C# codebases.

How to hire a .NET developer on Upwork

Finding the right technical talent using a strategic approach is straightforward on Upwork. Follow these four steps to streamline your hiring process.

Step 1: Craft a targeted job post

A well-crafted job post serves as your first filter, helping you attract .NET developers with the specific technical expertise your project demands.

  • Review our .NET developer job description template for ideas on content and format.

  • Define your technical requirements, specifying the exact .NET stack you need, such as ASP.NET Core, Xamarin, or WPF.

  • Use a descriptive title including specifics like "senior .NET Core developer for SaaS migration."

  • Outline deliverables clearly, listing specific features, API endpoints, or database structures.

  • Include screening questions such as asking candidates to describe similar completed projects.

Use the Job Post Generator powered by Uma™, Upwork's Mindful AI, for a fast start. Provide a few sentences about your project and Uma will draft a .NET developer job post for your review. 

Step 2: Filter and evaluate candidates

Effective candidate evaluation requires looking beyond surface-level qualifications to assess genuine technical capability and project fit.

  • Upwork's platform allows Uma to compare candidates side-by-side, highlighting relevant experience and client reviews.

  • Review portfolios, looking for projects similar in scope and technology stack to yours.

  • Check client feedback and prioritize candidates with strong ratings highlighting technical competence and communication.

  • Utilize platform filters to narrow your search by Top Rated or Expert-Vetted badges.

  • Verify availability, ensuring candidates can commit to your timeline.

Step 3: Interview your top choices

The interview stage validates technical claims and assesses how a candidate approaches complex .NET development challenges.

  • Schedule calls directly through the platform, where Uma can provide instant transcripts and summaries.

  • Review code samples by requesting GitHub links to evaluate coding style and adherence to best practices.

  • Conduct a technical interview using open-ended questions to discuss their approach to architecture and testing.

  • Evaluate problem-solving skills by resenting a realistic scenario from your project.

  • Check for soft skills to ensure the developer can explain complex concepts clearly.

Step 4: Agree on scope and begin work

Establishing a formal contract protects both parties and creates a foundation for successful project execution.

  • Upwork's contract workroom centralizes project management, file sharing, and payments.

  • Use a fixed-price contract for projects with finite deliverables or an hourly contract for exploratory or ongoing work.

  • Finalize deliverables and milestones and break the project into phases with specific outcomes.

  • Set communication expectations including agreement on update frequency and response times.

  • Clarify budget and payment terms including milestone-based payments with project funds protection.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring a .NET developer cost?

.NET developers on Upwork generally charge $17-$35 per hour, with rates varying based on the developer’s experience level and specialization and the project complexity. Rates can also be affected by technical skills (Azure, microservices, DevOps), location, availability, and industry regulatory familiarity.

Hourly contracts work well for ongoing work or deliverables that are hard to define precisely. Fixed-price contracts are effective for well-defined scopes. Review this guide to typical costs for .NET developer projects commonly found on Upwork:

Scripting and bug fixes

$100-$500/project

Entry-level
  • Code review and debugging
  • Simple script automation
  • Minor UI adjustments

API development and integration

$500-$2,500/project

Mid-level
  • RESTful API endpoints
  • Third-party service integration
  • Swagger documentation

Custom Web Application (MVP)

$2,500-$10,000/project

Mid-level
  • Database schema design
  • ASP.NET Core backend setup
  • Front end UI implementation

Enterprise System Migration

$10,000-$30,000+/project

Expert-level
  • Legacy to .NET Core migration
  • Azure cloud architecture
  • CI/CD pipeline configuration

FAQs about .NET developers

Frequently asked questions

Is hiring a .NET developer worth it?

Yes, hiring a .NET developer is worth it, especially if you're building enterprise software, need cross-platform applications, or require integration with Microsoft technologies like Azure or SQL Server. .NET is used by companies like Stack Overflow, UPS, and GE Aviation for mission-critical systems. For short-term projects or migrations, freelance talent provides faster ramp-up and cost efficiency.

What is the difference between .NET Framework and .NET?

The .NET Framework is the older, Windows-only version for legacy applications. Modern .NET (cross-platform evolution of .NET Core) is the open-source, cross-platform successor running on Windows, Linux, and macOS. For new applications, look for developers skilled in modern .NET 6 or later.

Should I hire a full-stack .NET developer or a back-end specialist?

When hiring a .NET developer, a back-end specialist will focus on server-side logic, databases, and APIs, making them a good fit if you already have a front-end team. A full-stack .NET developer handles both back-end C# code and front-end work using Blazor or ASP.NET MVC. For smaller projects or MVPs, a full-stack developer is often more cost-effective.

How important is Azure experience for a .NET developer?

Azure experience is increasingly essential for .NET development. Since Azure is the native cloud platform for .NET, developers with these skills handle deployment and architecture efficiently. If your application uses Azure Functions or SQL Database, prioritize candidates with proven Azure experience.

Can a .NET developer also work on mobile applications?

Yes, many .NET developers build mobile applications using .NET MAUI or Xamarin. These frameworks allow C# code to compile to native Android and iOS applications, enabling businesses to share code logic across platforms.


What is the typical timeline for a .NET development project?

Timelines for .NET development projects vary based on complexity. Simple API integrations take days to a week. Standard web application MVPs usually take one to three months. Large-scale enterprise migrations can take six months or longer.