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Hello, i have an old app which runs on nodejs and react, the backend seems to work fine, the issues i think is the front end in react. The react is compiled, i have lost the source. Can it be decompiled and make some fixes?
Projekt-ID: 40222363
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252 freelancere byder i gennemsnit €158 EUR på dette job

Hello, As an experienced team at Your Software, we are well-versed in all things frontend, especially with projects involving React and Node.js. While decompilation might not always be straightforward, our expertise in working with complex systems can definitely help bring life back into your older app. We understand the importance of maintaining and optimizing existing applications, as it saves both time and resources. Our approach is simple yet efficient - we start by doing a thorough analysis of your app's requirements and current state. Once the issues are identified, we implement the necessary fixes while keeping in mind the original functionality and codebase of your app. Our aim is to restore your app's integrity without compromising any critical aspects. What sets us apart from other developers is our commitment to excellent customer service and a complete understanding of project management. We believe in keeping you informed throughout the process while delivering high-quality results on time. No matter the task or its magnitude, we have the skills and professionalism to get it done efficiently. So let's work together to breathe new life into your app! Thanks!
€130 EUR på 2 dage
7,7
7,7

Hi there, I have the solution, first I will analyze your existing compiled React build to understand its structure, dependencies, routing, API calls, and how it communicates with your Node.js backend. If you have access to the compiled frontend files, the build folder, or the deployed version of the app, you can share those along with any information about the original features or issues you are currently facing. If there are specific bugs, UI problems, or functionality errors, that will help me prioritize and address them accurately during reconstruction. I will then start with decompiling and restructuring the project into a fresh React codebase, organizing components properly, restoring API integrations, and testing each module step by step. Once the structure is rebuilt, I will implement the necessary fixes, optimize performance if needed, and ensure everything is stable and maintainable moving forward. You will get a clean, working React source code version of your frontend, properly structured and ready for future updates, along with the requested fixes implemented and fully tested against your Node.js backend. Thanks, Rahul
€140 EUR på 7 dage
8,0
8,0

⭐⭐⭐⭐⭐ Fix React Frontend Issues for Your Node.js App Efficiently ❇️ Hi My Friend, I hope you're doing well. I've gone through your project details and see that you're looking for help with your React frontend. You don’t need to look any further; Zohaib is here to assist you! My team has worked on 50+ similar projects for React applications. I can help decompile your React app and fix the frontend issues efficiently, ensuring everything runs smoothly. ➡️ Why Me? I can easily resolve your React issues as I have 5 years of experience in web development, focusing on Node.js and React. My expertise includes frontend debugging, decompilation, and code optimization. Additionally, I have a strong grip on related technologies like JavaScript and RESTful APIs, ensuring a complete solution for your app. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. I'm looking forward to chatting with you! ➡️ Skills & Experience: ✅ React Development ✅ Node.js Development ✅ Frontend Debugging ✅ Decompilation Techniques ✅ JavaScript ✅ RESTful APIs ✅ Code Optimization ✅ Version Control (Git) ✅ UI/UX Design ✅ Responsive Design ✅ Error Handling ✅ Testing & Quality Assurance Waiting for your response! Best Regards, Zohaib
€150 EUR på 2 dage
7,5
7,5

Hello! Yes — this is technically possible, but with important limitations. If you only have the compiled React build (minified JS files) and no source code, the original React components cannot be cleanly restored. Variable names, structure, and comments are removed during production build. However, there are two realistic paths forward. Proposed Approach Assessment • Check whether source maps (.map files) exist • Inspect bundle structure and API calls • Review backend endpoints to understand integration Quick Patch (If Minor Fixes) • De-minify bundle • Identify affected UI logic • Apply targeted fixes directly Best for small visual or behavioral adjustments only. Clean Rebuild (Recommended) • Reconstruct frontend in a new React project • Mirror existing UI and workflows • Reconnect to your working Node.js backend • Deliver maintainable, documented source code This is safer, scalable, and future-proof. Deliverables • Working frontend connected to existing backend • Clean React source code • Build instructions and deployment guide Before proceeding, I’d need: • Access to the compiled files or live URL • Confirmation whether source maps exist • Brief overview of the issues to fix Let’s review what you have and determine the most efficient path forward. Best regards, Jasmin
€140 EUR på 7 dage
7,7
7,7

Hello, Yes, it’s possible to work with a compiled React build, but there are some important limitations. React apps are usually bundled and minified into static JavaScript files during the build process. That means the original source code (JSX, components, clear variable names) is lost. What can be done - Decompilation / Reverse Engineering: - Tools can “unbundle” and prettify the compiled code, but the result won’t be identical to the original source. You’ll get readable JavaScript, but not the original React component structure. - Fixes & Adjustments: - Minor layout fixes, CSS overrides, and bug patches can be applied directly to the compiled build. - For deeper React logic changes, it’s often more efficient to rebuild the front end from scratch using the backend API you already have. - Best Approach: - Extract what’s possible from the compiled files. - Document the current structure. - Recreate the React source where needed, ensuring maintainability going forward. Thanks Regards, Asif Ali Zaman
€180 EUR på 5 dage
7,7
7,7

Hello I have thoroughly reviewed your project description and am confident in my ability to assist you in completing it successfully. I believe it would be highly beneficial to delve deeper into the specifics of the job to determine the most effective way forward. I am open to scheduling an interview at your convenience, and I genuinely appreciate the chance to collaborate with you on this project. Your response is eagerly anticipated, and I'm excited about the prospect of working together. Thank you for considering my proposal. Looking forward to your prompt reply! Best regards Rekha!!!
€250 EUR på 7 dage
7,3
7,3

Having had significant experience with both the front end and back end of applications, I strongly believe I am the perfect fit for your project. Not only am I fluent in React.js, but I also have a deep understanding of Node.js. This is crucial as it enables me to not only decompile and make fixes to your react app, but also ensure smooth integration with the backend. In addition to my technical expertise, my problem-solving skills are one of my greatest assets. They allow me to not only identify bugs, but also find creative solutions to fix them. When it comes to managing old apps with lost source code like yours, I am confident in my ability to reverse-engineer the compiled code and make the necessary changes without compromising on quality. Moreover, I have successfully delivered various types of projects just like yours- from web-based POS systems to mobile applications and custom websites – which required me to work with diverse technologies. To sum up, if you entrust this job to me, you can be assured of a reliable developer who combines technical expertise with creative problem-solving skills. I look forward to bringing your app back to life! With Regards!
€250 EUR på 7 dage
7,5
7,5

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat, where I can also share relevant examples of my past work. I'm looking forward to hearing back from you! Best Regards, Divu.
€250 EUR på 4 dage
7,1
7,1

As a seasoned full-stack developer with expertise in both React and Nodejs, I am excited to offer my services in reviving your app. My 10+ years of experience in web development, coupled with a bachelor's degree in computer science, have equipped me with the right skills and knowledge to handle any project. Regarding your issue with the lost source code, decompiling is an area I am well-versed in. Even though it can be a tedious process, I'm confident in my ability to decrypt intricate files and identify and mend the problem areas that are causing your frontend issues. Additionally, my experience spans beyond building websites; I've created complex systems such as LIMS and integrated healthcare engines. This means that not only will I fix the frontend issues but also ensure smooth interactions between backend and frontend for a comprehensive, optimized platform. With me on board, you can expect a meticulous approach to problem-solving and effective communication throughout the process.
€250 EUR på 3 dage
6,7
6,7

As an experienced full-stack developer with a focus on Node.js and the React.js framework, I take great pride in my ability to handle both frontend and backend tasks effectively. I believe this makes me uniquely equipped to tackle the issues you're facing with your React + Nodejs app. Although your situation may seem challenging since the source code has been lost, rest assured it's not insurmountable for my team and me. In addition to my extensive knowledge of React.js, I boast deep expertise in JavaScript and web development as whole, including server-side scripting using Node.js. This means we won't just tackle the issue at hand, but can assist in preventing similar issues in the future. Lastly, know that when you work with me, you are gaining a dependable partner who is there for the long haul. My commitment to delivering exceptional experiences that supports your growth is unwavering. So let's join hands and rejuvenate your React + Nodejs app together! Reach out to me now and let's discuss how we can transform your current challenges into a thoroughly modern, efficient and polished application.
€120 EUR på 4 dage
6,1
6,1

Hi, I’m experienced in React and Node.js, with over 7+ years in full-stack development. I can help troubleshoot the issues and suggest improvements if I can access the compiled code. Feel free to reach out to discuss how we can proceed. I’m open to Zoom calls for a deeper dive into your app. Best Regards, Priyanka
€140 EUR på 2 dage
6,4
6,4

Up! have experience handling legacy Node.js and React apps, including cases where the frontend source is missing. While compiled React cannot be fully restored, I can analyze, de-minify, and assess whether fixes are possible. If needed, I can rebuild the frontend cleanly while keeping your existing backend intact.
€175 EUR på 2 dage
6,5
6,5

I understand you have a React production build with the source code lost, while your Node.js backend is still working fine. This is a classic reverse-engineering case where the frontend can be carefully reconstructed by analyzing the compiled bundle, API calls, and UI flow. I’ve handled similar recoveries by rebuilding a clean React project from the build files and reconnecting it to the existing backend for proper fixes. Instead of patching minified code, I’ll restore a maintainable source you fully own again. Looking forward for your positive response in the chatbox. Best Regards, Arbaz H
€190 EUR på 7 dage
6,3
6,3

Hello, Thank you so much for posting this opportunity. It sounds like a great fit, and I’d love to be part of it! I’ve worked on similar projects before, and I’m confident I can bring real value to your project. I’m passionate about what I do and always aim to deliver work that’s not only high-quality but also makes things easier and smoother for my clients. Feel free to take a quick look at my profile to see some of the work I’ve done in the past. If it feels like a good match, I’d be happy to chat further about your project and how I can help bring it to life. I’m available to get started right away and will give this project my full attention from day one. Let’s connect and see how we can make this a success together! Looking forward to hearing from you soon. With Regards! Abhishek Saini
€250 EUR på 7 dage
6,2
6,2

Hello sir, Can we talk now? As per job details you want a React JS Developer who can help you with below key tasks :-- ==> Analyze the existing compiled React build (JS bundles, assets, sourcemaps if available) ==> Determine whether partial recovery or debugging is feasible ==> Identify frontend issues causing incorrect behavior. Yes, i can surely help you with above tasks. so no need to worry about your projects work. Now, I have some questions... 1) Do you have access to the deployed build files (JS, CSS, assets)? Are source maps (.map files) available on the server? 2) What specific issues or bugs are you currently facing in the UI? If you’re looking for a developer who can honestly assess feasibility, avoid wasted effort, and deliver a stable solution, I’d be happy to help. Looking forward to your response. Thanks
€250 EUR på 7 dage
6,3
6,3

Greetings, I see you're dealing with an old Node.js and React app where the backend is functioning well, but the frontend has some issues, and you’ve lost the source code. The good news is that while decompiling React code isn't straightforward, I can help analyze the compiled code to identify the problems and implement the necessary fixes. With my experience in both Node.js and React, I'm comfortable navigating through existing code and making adjustments to restore functionality. Additionally, my background in web development equips me to ensure that any updates not only resolve current issues but also enhance the app’s performance moving forward. I'm looking forward to the opportunity to assist you with this project. Best regards, Saba Ehsan
€150 EUR på 3 dage
5,7
5,7

Hi, I specialize in API and web development with expertise in React.js and Node.js. I can help decompile and fix the front end of your app. Let's discuss the details further.
€155 EUR på 1 dag
5,8
5,8

Hi, I understand that you have an old Node.js and React app where the backend is functioning well, but you’re facing challenges with the React frontend, especially since you've lost the source code. I'm confident that I can assist you in decompiling the existing application and resolving the frontend issues. With extensive experience in both React and Node.js, I specialize in web application development and have successfully worked on similar projects where I've rebuilt and optimized applications from decompiled code. My approach will ensure that we not only address the immediate problems but also enhance the frontend for better performance and user experience. I propose to get started right away and can deliver results within 14 days. After addressing the issues, I will ensure the application runs smoothly and meets your requirements.
€200 EUR på 14 dage
5,8
5,8

Hello, I’ve read your situation carefully. Since the backend is working and only the compiled frontend is available, here’s the realistic path forward. While the original React source cannot be fully restored (due to minification and bundling), I can extract and de-minify the compiled files, identify core components, routing, and logic, and rebuild a clean, structured React project around the recovered functionality. This allows us to fix UI issues properly and reconnect everything to your existing Node backend. If the app is small to mid-sized, I can reconstruct it efficiently. For larger or heavily bundled apps, a clean rebuild using the extracted logic as reference may be faster and more stable long term. Share the compiled build files and the list of fixes you need. I’ll review and confirm the best execution plan immediately. Regards, Sagar P.
€140 EUR på 7 dage
5,9
5,9

Hello, I have carefully analyzed your project requirements and have previously worked on recovering and stabilizing legacy React applications where the original source code was missing. In similar cases, I assessed compiled React builds, identified limitations, and provided practical solutions such as partial decompilation, refactoring critical flows, or rebuilding affected components while keeping the existing backend intact. Your main challenge is the compiled React frontend with no source available. I will review the compiled bundle to determine what can realistically be decompiled, identify which fixes are feasible directly, and clearly advise where rebuilding specific parts in React is the safer and faster option. I will focus on restoring functionality while ensuring compatibility with your existing Node.js backend. I am available to begin work immediately and am committed to delivering the highest quality project within the shortest possible timeframe. Thank you, Elenilson
€140 EUR på 7 dage
5,9
5,9

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