Merge .NET & React Apps

@akshaybhagwat76

***.NET & REACT EXPERT*** Hi, .NET + React fusion specialist consolidating mature web applications into unified mono-repos with shared .NET 6/7 APIs, React 18 UIs, unified authentication (JWT/OAuth), state management (Redux/Zustand), automated CI/CD (Azure DevOps/GitHub Actions), and complete feature parity preservation. Expert in code audits, overlap mapping, large-scale refactors, and seamless Azure deployments with full test coverage. Experience: 8+ similar .NET/React integrations (enterprise CRM + React dashboard, legacy API + modern SPA fusions) Kindly let me know your suitable time for further discussion. In meantime, review client feedback below. Looking forward to working together... Thanks, Akshay

@vishal1145

Your biggest risk isn't the merge itself—it's ending up with a Frankenstein codebase where neither team wants to touch the other's logic six months from now. I've seen three companies attempt this exact consolidation and fail because they treated it like a simple "lift and shift" instead of re-architecting the boundaries between frontend and backend. Before proposing the structure, I need clarity on two things. First, are both apps hitting the same database or do you have separate schemas that also need reconciliation? Second, what's your current authentication mechanism—if one uses JWT and the other uses session cookies, that's a non-trivial merge that affects every API call. Here's the architectural approach: - .NET 6 API LAYER: Extract all business logic into a unified RESTful API with OpenAPI specs, ensuring both legacy codebases' endpoints map cleanly without breaking existing integrations. - REACT 18 UI: Migrate Angular components to React using a feature-flag system so you can deploy incrementally rather than big-bang cutover that risks downtime. - AZURE DEVOPS CI/CD: Build a multi-stage pipeline with separate build agents for .NET and Node, then containerize both into a single Docker Compose setup for local dev and Azure App Service deployment. - MONO-REPO STRUCTURE: Use Nx or Turborepo to manage shared libraries (auth, API clients, validation schemas) so changes propagate correctly without duplicating TypeScript interfaces and C# DTOs. - AUTHENTICATION UNIFICATION: Implement a single OAuth2 flow with refresh tokens stored in HttpOnly cookies, replacing whatever patchwork exists now. I've done this exact consolidation for a healthcare SaaS company that had a .NET admin portal and a React patient app—merged them into one codebase serving 40K users without a single rollback. I don't take on projects where the acceptance criteria are vague, so let's get on a 20-minute call to walk through your current repo structure and nail down the migration sequence before I commit to a timeline.

@vinod150987

I have 15+ years of strong IT experience working across .NET and enterprise database technologies, including C#, VB.NET, Java, Python, FastAPI, ASP.NET MVC, ASP.NET Core, REST APIs, AWS Lambda, Angular, IIS, WCF/Web Services, JavaScript, jQuery, HTML, XML, and XSLT. I have strong hands-on experience in ASP.NET Core, Web API development, Entity Framework, SQL Server, Crystal Reports, role-based authentication, and secure enterprise-grade application development. Please feel free to message me so we can discuss your requirements in detail.

@NEHABHAT92

With more than a decade of experience in web and mobile development, our team has acquired vast knowledge in marrying different technologies to create seamless, powerful applications. We have successfully integrated .NET and React stacks on multiple occasions just like you require for your project; transforming two separate codes into one clean, functional solution that ensures every critical feature works as before, which is always our primary goal. Our proficiency is not limited to unifying the two platforms but extends to authentication, routing, state management, and automated build/CI-CD pipelines using Azure DevOps or GitHub Actions. These skills are vital in delivering the concise, handover guide you need alongside the commented source code. Your satisfaction is our priority. We understand the importance of a single repo running locally with minimal stress hence we will deliver that. Other than that we will satisfactorily fulfil all other acceptance criteria such as ensuring all legacy features work perfectly. With us alongside, this merge will be effortless on your part. Choose us and let's start folding your two great applications into one incredible one!

@Shrutibimpl

Hello, I will audit your repositories to build a unified architecture that integrates your .NET backend and React frontend into one project. I will refactor the code to remove overlaps while ensuring every feature remains fully functional. I will implement a single authentication system and sync the routing and state management for a seamless experience. I will also configure an automated pipeline to handle the entire build and deployment process. This method gives you a clean, manageable codebase without redundant parts. 1) Do the two apps currently share a single database? 2) Which platform do you use for your automated build pipelines? 3) Are there any specific third-party APIs that both apps currently call? Thanks, Bharat

@thomasb726

Hi! Merging two mature web applications into a cohesive codebase is a significant task that requires careful planning and execution. The goal of creating a clean, maintainable solution that leverages the best aspects of both .NET and React is essential for long-term success, and I appreciate your focus on eliminating duplication. The primary challenge here lies in ensuring that both applications contribute equally to the new architecture without losing any critical functionality. This involves a deep understanding of both codebases and a strategic approach to unify their components, including authentication, routing, and state management. In my experience with similar integrations, I have successfully conducted audits of existing repositories to identify overlapping functionalities and proposed shared architectures that enhanced performance and maintainability. For instance, I worked on a project where I merged a .NET back-end with a React front-end, leading to a 30% reduction in duplicated code and a significant improvement in deployment speed through streamlined CI/CD pipelines. This was achieved by establishing a mono-repo structure that allowed for easier management of shared resources and consistent build processes. To tackle your project, I would follow a structured approach: 1. Conduct a thorough audit of both repositories to identify overlapping functionalities and dependencies. 2. Map out a shared architecture using .NET 6/7 for the API and React 18 for the UI, ensuring that all critical features are preserved. 3. Refactor or migrate code as necessary to maintain operational integrity while simplifying the overall structure. 4. Implement unified authentication, routing, and state management strategies. 5. Set up automated build and CI/CD pipelines using Azure DevOps or GitHub Actions. 6. Deliver clean, well-commented source code along with a hand-over guide for local setup and deployment. I would love to know more about your specific goals for the merged application and any challenges you've already identified. - What are the most critical features from each app that you want to ensure remain operational? - Are there any specific timelines or milestones you have in mind for this project? Looking forward to hearing from you,

@ritikgarg55

Hi there, my name is Ritik Garg and I'm a Full-Stack/Backend Developer from India. I have over 5 years of experience working with Python, Django, Restful APIs, Data Mining, Flask, Scrapy, Selenium, Flask, Node JS, Angular, React, AWS, DevOps, Azure, request, threading and selenium. My ultimate goal is to provide my clients with more than 100% satisfaction by implementing their ideas and helping their business thrive and grow. I always make sure to understand my clients' needs accurately and recommend the best approach for their project. I am always ready to take on any project and deliver it to the best of my abilities. Here are my core skills: - VueJS | JavaScript | Angular | ReactJs - NodeJS | Python - Bootstrap | CSS | CSS3 | HTML | HTML5 - Django | Flask - MySQL | MongoDB | SQLite | Postgres SQL - AWS, EC2, S3 DevOps Deployment

@borisdeveloper71

Hi, there. I have significant experience merging and refactoring enterprise-scale .NET and React applications, and your project aligns closely with several successful integrations I've delivered. In particular, I recently unified a .NET 6 API backend with a React 18 frontend for a financial services client, consolidating two mature products into a single mono-repo with streamlined CI/CD via Azure DevOps. I understand the importance of a seamless user experience and the need to preserve legacy features, while modernizing architecture and eliminating code duplication. My approach would begin with a thorough audit and mapping of both codebases, followed by architecting a shared solution using .NET 6/7 for robust APIs and React for a dynamic UI, ensuring authentication, routing, and state management are unified and maintainable. I’m accustomed to setting up automated testing and deployment pipelines, and will provide comprehensive documentation for setup and handover. I’m confident in delivering a well-structured, maintainable mono-repo where both codebases contribute equally, meeting all your acceptance criteria. Best regards Boris

@amadorjay

Hello, I’ll unify your .NET and React applications into a single, maintainable codebase. This will enhance functionality and streamline your development process. I have extensive experience in similar integrations. Recently, I merged a .NET API with a React frontend for a multi-tenant SaaS platform, ensuring both systems operated cohesively. My focus is on clean architecture and maintainability. **Solution Approach:** - Conduct a comprehensive audit of both repositories. - Design a shared architecture using .NET 6/7 for the API and React 18 for the UI. - Refactor code to ensure all critical features from both applications are preserved. - Implement unified authentication and routing. - Set up state management with Redux or Context API for seamless data flow. - Develop CI/CD pipelines with Azure DevOps or GitHub Actions for automated deployments. **Questions for Clarity:** - What are the most critical features that must remain operational post-integration? - Are there any specific performance metrics or benchmarks you’d like to achieve? - How do you envision the handover process and documentation? I’m ready to start immediately and ensure a smooth transition. Let’s discuss how to proceed.

@smstaci

⚠️!!NB!! ⚠️ YOU NAME THE PRICE — I'LL DOUBLE THE IMPACT Hi there! I am an expert in .NET and React integration, with a strong track record of merging complex applications into unified, maintainable solutions. Your project to fuse two mature web applications resonates with my experience in creating clean codebases that leverage the strengths of both platforms. While others may hesitate, I approach this challenge with determination and precision. This isn't just a task; it's an opportunity to demonstrate my capabilities. Your project's success is paramount to me. I propose conducting a thorough audit of both repositories, identifying overlapping functionalities and designing a shared architecture using .NET 6/7 and React 18. My focus will be on preserving critical features, unifying authentication, and ensuring CI/CD pipelines are seamless through Azure DevOps or GitHub Actions. Expect a clean, commented codebase and a detailed hand-over guide. I have successfully completed similar integrations that meet all acceptance criteria, including deployment verification. Let’s discuss how we can achieve a robust solution together! Regards.

@Cmonosoft

Hi there, I am a senior full-stack developer with strong experience in .NET (Core/6/7) and React 18, including large-scale refactors and consolidation of mature applications into unified, maintainable architectures. I have worked on projects where two independently evolved systems needed to be merged without losing functionality or introducing technical debt. How I will proceed - 1. I will begin with a structured audit of both repositories - * Map overlapping domains, services, and UI components * Identify duplicated business logic and API surface areas * Compare authentication mechanisms, routing patterns. * Review CI/CD pipelines and environment configurations I will propose a clean architecture centered on - * .NET 6/7 Web API as the unified backend * React 18 as the single front-end layer * Clear separation of domain, application, and infrastructure layers * Centralized authentication and authorization 2. Refactoring and Feature Preservation - * Migrate or refactor critical features from both systems * Eliminate duplicated services and utilities * Normalize API patterns and error handling * Consolidate data access layers I am confident I can deliver a clean, unified solution that preserves the strengths of both applications! Please schedule a call to discuss and start! Thanks Saurabh

@sumitwebrainbows

With 14 years of experience as a .NET developer, I assure you a swift and seamlessly merged solution for your applications. I've successfully delivered numerous comparable projects integrating .NET with React, with an emphasis on maintaining the best aspects of each stack while eliminating duplication. For example, I executed a recent project which involved migrating multiple applications into a single code base using .NET Core, thus ensuring clean and unified source code that retained legacy features flawlessly. As an added advantage for you, I'm also well-versed in Azure and can guarantee to demonstrate the effectiveness of our unified approach on your Azure subscription. Simplifying projects by removing complexities has always been my strength and I'm confident that this project will not be any different. Collaborating with me guarantees not just the completion of your project but also an unmatched commitment toward meeting your business objectives. Let's create a web application solution that's sophisticated, robust, understandable, maintainable and functional!

@osamak74

Hello, I understand your goal of merging the .NET and React applications into a seamless single codebase. With over five years of experience in .NET and React integrations, I've led similar projects where I successfully unified multiple applications without compromising on functionality. My approach would begin with a thorough audit of both repositories to identify and map overlapping functionalities. I will then design a shared architecture using .NET 6/7 for the API and React 18 for the UI, ensuring a clean, maintainable solution. All critical features will be refactored or migrated, with focused attention on unifying authentication, routing, and state management. Moreover, I have extensive experience setting up CI/CD pipelines using Azure DevOps and GitHub Actions, helping facilitate a smooth deployment process. The final deliverables will include well-documented source code and a concise hand-over guide to streamline local setup and deployment. Looking forward to the opportunity to partner with you on this project. Best, Osama

@Shaiwan

Hello!!! I HAVE ALREADY WORKED ON SIMILAR TYPE OF PROJECT OPEN CHAT WINDOW I WILL SHARE MY WORK. You want to merge two mature apps—.NET backend and React frontend into a single maintainable code-base preserving all features and ensuring clean architecture. Do you prefer a full mono-repo approach or a modular solution with clear separation between API and UI? Are there any existing CI/CD pipelines you want preserved or should I set them up from scratch? What I offer: ⭐ Audit and map overlapping functionality between .NET and React apps ⭐ Refactor and migrate code to a unified, maintainable architecture ⭐ Integrate authentication, routing, state management across both apps ⭐ Setup CI/CD pipelines with Azure DevOps or GitHub Actions ⭐ Deliver fully tested source code with unit and integration tests passing ⭐ Comprehensive hand-over guide for local setup and deployment With 7+ years of experience, I specialize in .NET + React integrations, large-scale refactors, and mono-repo consolidations. I’ll start with a detailed audit, propose a shared architecture, then refactor features iteratively while ensuring tests and pipelines are intact. Let’s discuss your preferred architecture and timeline in chat. Best Regards, Shaiwan Sheikh

@ViktorTrefilov01

✨✨✨✨✨ Hi, I can start working right now, I have strong experience merging and refactoring large-scale applications across .NET and React, and I understand your goal of creating a unified, clean architecture rather than stitching two systems together. I will audit both codebases, identify overlapping logic, and design a scalable structure using a .NET 6/7 API with a React 18 frontend, ensuring all existing features are preserved while eliminating redundancy. I will unify authentication, routing, and state management, and set up a streamlined CI/CD pipeline using GitHub Actions or Azure DevOps so the project builds and deploys consistently. The final solution will be well-structured, fully tested, and easy to run locally with a single command, along with clear documentation for setup and deployment. Regards.

@Hemantt841

You’re looking to merge two mature web applications—one in .NET and the other in React—into a single, maintainable codebase that balances both stacks equally while eliminating duplication. Your focus on auditing both repositories, unifying authentication, routing, and CI/CD pipelines, and delivering a one-command local run aligns well with a clean consolidation approach. Ensuring all legacy features remain fully operational with passing tests and verified deployment on Azure is clearly essential. With over 15 years of experience and more than 200 projects completed, I specialize in full stack development using React, Node.js, and .NET Core, alongside extensive cloud and DevOps work with Azure and automated CI/CD pipelines. I’ve handled complex integrations and large-scale refactors that unify disparate frontends and backends into streamlined, mono-repos, maintaining feature parity and improving maintainability. For your project, I will start with a detailed audit of both repositories to map overlapping functionality and propose a shared architecture using .NET 6/7 APIs with React 18 UI. I’ll refactor and migrate code to preserve all critical features, unify authentication and state management, and set up automated Azure DevOps pipelines. I anticipate completing this within a realistic timeline while providing clear documentation and deployment scripts tailored to your Azure environment. Let’s discuss your current setup and priorities so I can tailor the approach precisely to your needs.

@rbtech1984

Hello There!!! ⭐⭐⭐⭐(Merge .NET & React Apps)⭐⭐⭐⭐ I understand you need to merge two mature web apps—one in .NET and one in React—into a single, clean, maintainable code-base. The goal is to retain all existing features, unify authentication, routing, state management, and CI/CD pipelines, and deliver a ready-to-deploy solution with clear documentation. Services mentioned here based on project details ⚜ Audit both repositories and map overlapping functionality ⚜ Design shared architecture (.NET 6/7 API + React 18 UI) ⚜ Refactor/migrate code to preserve all critical features ⚜ Unified authentication, routing, and state management ⚜ Automated build and CI/CD pipeline setup (Azure DevOps / GitHub Actions) ⚜ Unit and integration test verification ⚜ Source code delivery with hand-over guide and deployment scripts With 9+ years experience in .NET, C#, React, and Azure, I’ve completed similar mono-repo integrations and large-scale refactors, ensuring all legacy functionality works flawlessly. I’ll deliver a robust, maintainable solution that’s easy for your team to manage. Excited to help you merge these apps seamlessly! Warm Regards, Farhin B.

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. With over 10 years of experience in web development and a strong background in both .NET and React, I’ve successfully executed several integrations and refactorings that align perfectly with your needs. I understand the importance of merging these two applications into a cohesive code-base while maintaining functionality and performance. I will start with a thorough audit of both repositories, mapping overlapping functions and crafting a shared architecture using .NET 6/7 for the API and React 18 for the UI. My focus will be on refactoring existing code to ensure all critical features remain operational, along with unifying authentication and building CI/CD pipelines in your preferred environment. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to clarify: Could you provide insights on any specific features from both applications that are critical and cannot be altered? Let’s discuss further over chat! Regards, Arpit Jaiswal

@Ussama91

I'll audit both repositories, map overlapping functionality, and propose a shared architecture. I'll refactor or migrate code to keep critical features operational, unify authentication, routing, and CI-CD pipelines, and deliver clear source code with a hand-over guide. I've integrated .NET and React in previous projects, including a large-scale refactor of a .NET 5 API with a React 17 UI, and a mono-repo consolidation of multiple .NET Core and React applications. Waiting for your response in chat! Best Regards.