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I’m looking for experienced engineers who can step into an active code-base built with React on the frontend and a Node.js backend, keep everything running smoothly, and leave the code healthier than you found it. Most of the work revolves around maintaining the existing platform—troubleshooting production issues, refactoring brittle components, tightening test coverage, and slipping in incremental feature requests without disrupting current users. What you’ll actually tackle day-to-day depends on your strength: • Frontend specialists will focus on React component updates, state management fixes, accessibility tweaks, and performance profiling. • Backend specialists will handle Node.js services, REST/GraphQL endpoints, database queries, and deployment scripts. • Full-stack contributors jump between both, coordinating data flow end-to-end and making sure releases land cleanly. Clean practices, readable pull-requests, and clear commit messages are non-negotiable. We run code reviews, automated tests, and a lightweight CI/CD pipeline—you’ll be expected to plug into that flow from day one. Deliverables for each task are simple: merged PRs, up-to-date unit/integration tests, and concise changelog notes so the rest of the team can follow along. If that sounds like your wheelhouse, let’s talk timelines and get you onboarded. AMILLI AI, CORP requires NDA's and reserve all rights related to our products.
Project ID: 40212616
126 proposals
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Active 2 days ago
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126 freelancers are bidding on average $153 USD for this job

Hi there, I am ready to sign NDA and fully respect all rights related to AMILLI AI, CORP products, code, and internal processes. Confidentiality and ownership are not negotiable for me, and I’m comfortable operating within those boundaries from day one. First of all I will step into the existing React and Node.js codebase and take time to review it carefully, understand current architecture, workflows, and pain points, and make sure everything is running smoothly in production before touching anything critical. Then I will move into resolving production issues, refactoring fragile components, improving readability, and tightening unit and integration test coverage. Depending on where I’m most needed, I’ll work on React component updates, state management fixes, accessibility and performance improvements, or on Node.js services, APIs, database queries, and deployment scripts, always keeping changes incremental and low risk. You will get clean, well structured pull requests, clear commit messages, updated tests, and concise changelog notes so the rest of the team can easily follow what was done and why. I’m comfortable with code reviews, CI/CD pipelines, and collaborating closely to make sure releases land cleanly. Looking forward to discussing timelines, priorities, and how I can contribute to keeping the platform healthy while gradually making it better. Thanks, Rahul
$140 USD in 7 days
7.8
7.8

Hi there, I’m very interested in joining your team to help maintain and improve your React frontend and Node.js backend. With solid experience troubleshooting production issues, refactoring legacy code, and enhancing test coverage, I’m comfortable working across both stacks or focusing where you need me most. I’m committed to clean, readable code, thorough testing, and smooth CI/CD integration—ensuring incremental updates don’t disrupt your users. I’m ready to dive in quickly, contribute meaningful improvements, and keep your platform running flawlessly. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T
$140 USD in 7 days
6.2
6.2

Hi there, I understand you're seeking experienced React & Node.js developers for critical maintenance, refactoring, and incremental feature work at AMILLI AI, CORP, ensuring a healthier codebase and smooth operations. I'm adept at troubleshooting production issues, enhancing test coverage, and implementing clean solutions without disruption. My expertise aligns perfectly with your needs: * **Frontend:** ReactJS, NextJS, state management, accessibility (HTML/CSS), and performance optimization. * **Backend:** NodeJS services, REST endpoints, and database interactions, drawing on experience with Firebase/Supabase/Django. * **DevOps:** Familiarity with Vercel, Netlify, Heroku, and Git/GitHub for seamless CI/CD integration and deployment. I am committed to clean practices, readable PRs, robust testing, and clear changelog notes, ready to plug into your existing code review and CI/CD pipeline from day one. I acknowledge AMILLI AI, CORP's NDA requirements and intellectual property rights. I am genuinely eager to help keep your platform running smoothly and robustly. Regard's Nikhil Chandra Roy. Nikhil Chandra Roy, a dedicated and honest professional.
$140 USD in 7 days
6.3
6.3

As an accomplished Senior Web & Mobile Application Developer with over a decade of experience, I believe I am the ideal candidate for your React and Node maintenance project. With skills spanning MEAN/MERN stacks, JavaScript expertise, and AI and Machine Learning integration, I can seamlessly navigate both your frontend and backend requirements. My career has taught me the art of maintaining and improving existing codebases responsibly, emphasizing clean practices, readable pull-requests, and clear commit messages. In addition to my extensive technical aptitude, I understand the importance of delivering succinct, up-to-date documentation for team alignment—something you specifically requested. For all my tasks, you can expect meticulously merged PRs, thorough unit/integration tests, and concise changelog notes. Being versed in tools like Git, GitHub, GitLab, Bitbucket as well as SVN and TFS will ensure tight integration with your established workflows. My ultimate goal is to foster maintainability and improve existing systems through a thoughtful approach to refactoring and extended test coverage. With me on board at AMILLI AI, CORP¸ you'll also gain access to long-term support ensuring that your applications operate smoothly even after project completion. Let's have a chat about how we can fortify your project while adhering to all NDAs. With Regards!
$250 USD in 7 days
6.2
6.2

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$80 USD in 4 days
5.6
5.6

Hi there. React and Node platforms often degrade over time due to rushed fixes, fragile components, and untested changes, which leads to recurring production issues and risky releases. We step into existing systems, stabilize them fast, refactor safely, strengthen tests, and ship improvements without disrupting active users. Here are our questions: Which area needs the most immediate attention right now frontend, backend, or both? What testing setup and deployment pipeline are currently in place? We have delivered this type of maintenance and stabilization work before on active React and Node platforms with CI workflows and strict code reviews. Feel free to check our portfolio, or I can send you specific samples in chat. As a company policy, we also provide 30 days of post delivery support to ensure everything runs smoothly. Let’s discuss your project today!
$140 USD in 3 days
5.7
5.7

Hi there, Keeping a React–Node codebase stable while improving it is where many teams struggle—bugs slip through, performance drags, and updates risk breaking old features. I specialize in maintenance workflows that tighten reliability through targeted refactors, efficient debugging, and CI/CD-integrated delivery so every release remains clean and traceable. Here are my questions: 1. Do you currently use any test framework (Jest/Mocha/Cypress), or should I set that up for coverage improvements? 2. Are the incremental features primarily UI-facing or more backend-extension tasks? Drop me a message so we can get started right away.
$180 USD in 7 days
5.8
5.8

With an extensive background in web development, primarily focusing on backend work over the past six years, I am confident that I have the skills and expertise required to maintain and improve your React and Node.js based platform at AMILLI AI, CORP. My main strength lies in developing and maintaining robust codebases, streamlining data flow and ensuring a smooth user experience. I understand the importance of clean code practices, detailed changelogs, and comprehensive testing, all of which align with your expectations for this project. With my deep familiarity using REST/GraphQL endpoints, database queries,and deployment scripts, I can proactively troubleshoot production issues as they arise, upgrade brittle components to enhance performance,and implement new features seamlessly without disturbing existing functionalities. Having developed websites from scratch for numerous startups and maintained complex projects for enterprises,I bring to the table a level of maturity and adaptability that will match your high standards. More than just solving problems,I believe in long-term solutions that help your platform thrive. Time management is another strong suit - I assure you prompt task delivery without compromising quality
$90 USD in 3 days
5.9
5.9

Hello , I'm , a seasoned software engineer specializing in JavaScript, Node.js, GraphQL, and software development. I understand your need for React and Node maintenance developers to enhance your existing platform. With a strong background in frontend and backend development, I am well-equipped to troubleshoot issues, refactor code, and implement new features seamlessly. My approach involves meticulous frontend updates, backend service management, and ensuring smooth deployment processes. I prioritize clean coding practices, thorough testing, and effective communication to ensure project success. I am confident in my ability to deliver high-quality results that exceed your expectations. I am excited about the opportunity to discuss how I can contribute to your project further. Looking forward to connecting,
$30 USD in 7 days
5.5
5.5

Hi, We’ve been working with React and Node since their early days, and we’ve built several large-scale products using these technologies. One of our recent projects, Descripio, is a Chrome extension that uses AI to help Amazon sellers optimize their product listings. We developed the entire product from scratch, including the backend, frontend, and CI/CD pipeline. As a full-stack developer, I can handle both frontend and backend tasks, ensuring seamless data flow between the two. I’m also passionate about creating clean, maintainable code and have extensive experience with automated testing. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best regards, Adil
$100 USD in 7 days
5.4
5.4

Hi, I’m an experienced engineer who steps into live React + Node.js codebases, keeps systems stable, and leaves them cleaner than I found them. I handle production debugging, refactoring, test improvements, and incremental feature work without disrupting users. I’m comfortable with code reviews, CI/CD, clean PRs, and clear documentation, and I can ramp up quickly in an existing workflow. Happy to sign NDAs and discuss timelines. Thanks
$250 USD in 7 days
5.6
5.6

⭐ Hello there, My availability is immediate. I read your project post on React & Node Maintenance Developers. I have extensive knowledge in MERN Stack (MongoDB/MySQL, Express JS, React, and NodeJS), as well as RESTful API integration. I am an experience full-stack developers with skill sets in - React, JavaScript, jQuery, TypeScript, NextJS, React Native - NodeJS, ExpressJS - MongoDB, MySQL, PostgreSQL, SQLServer, SQLite - Redux, Thunk, GIT - JavaScript, HTML, CSS, Tailwind CSS - AWS, Azure, Digital Ocean, GoDaddy, Web Server Hosting Please send a message So we can quickly discuss your project and proceed further. I am looking forward to hearing from you. Thanks
$230 USD in 3 days
5.2
5.2

With extensive experience in both frontend and backend development using React and Node.js, I would be a valuable addition to your team at AMILLI AI, CORP. My stint at Google and Apple has enhanced my ability to troubleshoot production issues, refactor brittle components, enhance test coverage, implement incremental feature requests, ensuring a smooth workflow. I have expertise in state management fixes, accessibility tweaks and performance profiling. Moreover, I am well-versed with Node.js services and deployment scripts. In terms of work ethic, I prioritize clean codes along with readable pull requests commit messages which aligns perfectly with the requirement. My past projects have always integrated a Lightweight CI/CD pipeline to ensure code reviews and automated tests to maximize system efficiency. In conclusion, if you choose me as your maintanace developer, you can expect merged PRs; updated unit/integration tests; concise changelog that will help team's coordination. Let's discuss the timelines further and proceed with onboarding!
$140 USD in 7 days
5.8
5.8

Hi there, I’ve reviewed your React/Node maintenance needs and I’m confident I can keep your active codebase running smoothly while elevating code health. With solid MERN experience, I focus on approachable, production-grade fixes: React component updates, accessibility tweaks, performance profiling, and robust state management. On the backend, I’ve built and maintained Node.js services with REST/GraphQL endpoints, optimized queries, and solid deployment scripts. As a full-stack contributor, I coordinate data flow end-to-end and ensure releases land cleanly within a lightweight CI/CD pipeline. What you’ll get: clean, readable PRs; up-to-date unit/integration tests; and concise changelog notes so teammates can track changes easily. I’ll plug into your review process from day one and deliver incremental improvements without disrupting current users. I can begin with a quick system audit, propose a triage plan, and outline a cadence that fits your squad. Best regards,
$100 USD in 2 days
5.2
5.2

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — React & Node Maintenance Developers Needed . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$120 USD in 2 days
5.0
5.0

I can handle this maintenance work on your React and Node.js platform. I understand you need a developer who can keep the system stable while improving code quality through troubleshooting, refactoring, and test coverage enhancements. I specialize in both frontend and backend development using React and Node.js. For frontend, I focus on clean component updates, efficient state management, and performance improvements. On the backend, I ensure robust API endpoints, efficient database queries, and smooth deployment processes. I follow clean coding practices and provide clear, well-documented pull requests and commit messages. My approach will help maintain and incrementally improve your platform without disrupting users, ensuring smoother releases and healthier code overall. Should I prepare a quick outline of steps to start tackling the most critical areas first?
$125 USD in 7 days
5.2
5.2

✋ Hi There!!! ✋ The Goal of the project:- Maintain and strengthen an existing React and Node.js platform through clean fixes, refactoring, testing, and safe feature updates. I have carefully read your project details and understand that you need developers who can jump directly into a live codebase, troubleshoot production issues, refactor fragile components, improve test coverage, and deliver incremental features while fully respecting your CI/CD flow and NDA requirements. I am the best fit for this project because I regularly work inside active React and Node.js systems and leave code cleaner, better tested, and easier to maintain than I found it. 1. React frontend maintenance including component updates, state management, accessibility, and performance improvements 2. Node.js backend work with REST or GraphQL APIs, database queries, and deployment scripts 3. Clean Git workflow with readable pull requests, clear commits, and updated unit and integration tests My services include UI adjustments, database management, automated testing, CI friendly development, and full source code updates delivered through merged pull requests. I bring 9+ years experience as a full stack developer and have completed similar long term maintenance and optimization projects for production React and Node platforms. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$100 USD in 10 days
4.9
4.9

Hello, I’ve reviewed your React + Node codebase requirements and can step into the active project to stabilize production, incrementally improve code quality, and deliver small features without disrupting users. Approach: run a quick onboarding review (logs, CI status, flaky tests), prioritize hotfixes, then iterate on refactors with focused PRs and tests. Frontend work: update fragile React components, tighten state management, fix accessibility and profile performance. Backend work: harden Node services, optimize GraphQL/REST resolvers and DB queries, and ensure deployment scripts integrate with your CI/CD. Full-stack: coordinate data flow, write integration tests, and document changelogs. How I start & what I need: access to repo, CI logs, staging credentials, current backlog/priorities, and the NDA. I’ll produce small, reviewable PRs with clear commits and test coverage; first review and hotfixes delivered within 3-7 days depending on priorities. Which part of the stack (frontend, backend, or tests) should I prioritize on day one, and are there any active production incidents or timelines I should be aware of? Best regards,
$200 USD in 2 days
4.7
4.7

Dear , I saw your project titled "React & Node Maintenance Developers Needed" and I'm interested in submitting a proposal. With over 10 years of experience in software development, I have a proven track record and strong expertise in the required skillset, including Node.js. Here's a bit more about my skillset: Skills: JavaScript, Node.js, Software Development, Backend Development, Frontend Development, GraphQL, Database Management, Software Engineering, CI/CD, REST API I'm confident I can deliver exceptional results for your project. Would you be open to discussing this further? Thank you for your time. Sincerely, A Mateen
$140 USD in 7 days
4.6
4.6

Hello, I have extensive experience in maintaining and enhancing applications built with React and Node.js. I can ensure your platform runs smoothly while improving code quality. For frontend tasks, I'll focus on React component updates, state management, and performance profiling. On the backend, I can manage Node.js services, REST/GraphQL endpoints, and optimize database queries. As a full-stack developer, I can seamlessly coordinate data flow and ensure smooth releases. I adhere strictly to clean coding practices, readable pull requests, and clear commit messages. I'm familiar with code reviews, automated testing, and CI/CD pipelines, ready to integrate into your workflow from day one. Questions: • Are there specific areas within the codebase you prioritize for refactoring? • What is your preferred process for handling incremental feature requests? Looking forward to contributing to your team and keeping your codebase healthy. Thanks and best regards, Faizan
$90 USD in 5 days
4.6
4.6

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