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New Freelancer from Pakistan or India Good experience but willing to work at low budget. I’m advancing a product whose tech stack spans Node.js for the backend, React.js on the web front-end, Flutter for mobile, and MongoDB as the data store. The codebase is already structured around this stack, yet several modules remain unfinished and a few existing components need refinement. Here’s what I need from you: • Extend or refactor the Node.js API so it remains modular, secure, and fully documented with Swagger (OpenAPI). • Finish React.js screens, wiring them to the refreshed endpoints while keeping styling consistent with the current design system. • Build or polish the corresponding Flutter views so iOS and Android stay in parity with the web experience, leveraging Provider/Bloc for state management. • Optimise MongoDB queries, create the missing indexes, and set up validation to guard against bad data. • Push all work through Git, write concise commit messages, and include unit / widget tests where relevant. Acceptance criteria: the updated project should run locally with one docker-compose up, all tests must pass, and linting should return a clean slate. If this aligns with your expertise, let’s make these pieces fit together smoothly.
Project ID: 40515893
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Hi there, We’ve built several products using the exact tech stack you mentioned—Node.js, React.js, Flutter, and MongoDB. One of our recent projects, Descripio, involved developing a Chrome extension that used AI to generate product descriptions for Amazon sellers. We created a fully functional MVP with features like user authentication, product scraping, and multiple Amazon marketplace integrations. We also have dedicated Flutter developers who can deliver fully optimized mobile apps that feel native, rather than just web views. 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, Adil
$15 USD in 40 days
6.7
6.7

I have solid experience across your full stack: Node.js, React.js, Flutter, and MongoDB, and can step in to finish the unfinished modules and refine existing components. I'll extend and refactor the Node.js API to be modular and secure with Swagger/OpenAPI docs, complete React.js screens wired to updated endpoints, build or polish Flutter views using Provider/BLoC for state management, optimise MongoDB queries, add indexes and validation, and push all work through Git with unit/widget tests. The project will run locally with a single docker-compose up and return a clean linting result. I write concise commit messages and maintain design system consistency. Ready to start immediately. Regards, Harsh Thoriya
$5 USD in 40 days
6.9
6.9

With over a decade of experience in web and mobile app development using precisely the Node.js, React.js, Flutter stacks you require, combined with my mastery over MongoDB and API documentation with Swagger, there's no doubt I am the perfect fit for this project. My dedication to modular, secure, and thoroughly documented code will ensure the trustworthiness and maintainability of your app. One of the aspects that sets me apart is my relentless focus on optimization. I can dive deep into your MongoDB queries, identify and create missing indexes, and establish validation to prevent bad data injection - all of which are essential for a robust backend. Moreover, as a full-stack developer, I can ensure a seamless experience between iOS, Android, and Web by leveraging Provider/Bloc methods on Flutter and React.js. Lastly, my commitment to delivering a perfect product is exemplified by pushing all the work through Git ensuring concise commit messages to give you clear insight into every aspect of the project’s progress, along with relevant unit/widget tests to guarantee quality code. Collaborating with me means not only selecting an able coder but also getting a passionate teammate dedicated to bringing your vision to life in an extraordinary way. Let's discuss how we can make these separate puzzle pieces fit together effortlessly!
$5 USD in 40 days
6.0
6.0

⭕⭕⭕ Full-Stack Node.js, React.js & Flutter Development Support ⭕⭕⭕ Hello, I can help complete and refine your existing product across Node.js, React.js, Flutter, and MongoDB, ensuring clean architecture, well-documented APIs, optimized database performance, and a seamless experience across web and mobile platforms while maintaining code quality and deployment standards. Key Features Node.js API Development & Refactoring, Swagger/OpenAPI Documentation, React.js Screen Completion & API Integration, Flutter Development with Provider/Bloc, MongoDB Optimization & Indexing, Data Validation & Security Enhancements, Docker & Docker Compose Setup, Git-Based Development Workflow, Unit & Widget Testing, Code Linting & Quality Assurance, Cross-Platform Feature Parity READY TO START WORK IMMEDIATELY!!!!! Thanks
$5 USD in 40 days
5.7
5.7

As an experienced Full Stack Web and Mobile App Developer, I'm confident in my abilities to tackle this multi-faceted project. With a solid foundation and proficient skills in API Development, Node.js, NoSQL Couch & Mongo, and React.js - the perfect alignment for your needs - I'm ready to dive into carefully organizing and extending your codebase to ensure maximum modularity, security, and documentation with Swagger. Furthermore, having worked on many SaaS applications and e-commerce platforms with complex databases, I'm poised to not only finish React.js screens in accordance with your design system but also expertly fine-tune your MongoDB queries for speed and performance by creating necessary indexes. Database management is no stranger to me; I will make certain all data is streamlined, tidy, and suitably validated to eliminate any scope of erroneous data. Lastly, my experience with mobile app development using Flutter aligns perfectly with your desire for iOS and Android parity. Alongside visual polish in the Flutter views, I promise a smooth state management leveraging Provider/Bloc. Additionally, as adoption of best practices is my style, all my work will be extensively unit tested and supported by concise commit messages through Git. Expect nothing but top-notch implementation from me offering excellent value for your budget!
$5 USD in 40 days
5.4
5.4

Hi, Your project caught my attention because you're looking to improve and complete an existing product rather than build something from scratch. Working with established codebases requires understanding existing architecture, maintaining consistency across platforms, and delivering enhancements without introducing regressions. UNDERSTANDING YOUR REQUIREMENTS From the description, you already have a Node.js backend, React.js web application, Flutter mobile application, and MongoDB database in place. The work involves extending and documenting APIs, completing unfinished React and Flutter modules, improving MongoDB performance, and ensuring all components work together reliably. CHALLENGES & SOLUTIONS As applications grow, APIs often become difficult to maintain when new features are added. I would focus on keeping the Node.js services modular, well-documented, and aligned with long-term scalability requirements. Database performance issues often appear as products gain more users and data. I would review query performance, indexing strategies, and validation rules to improve reliability and responsiveness. SKILLS & EXPERIENCE I am a Full Stack Developer with 13+ years of experience building SaaS, enterprise, and mobile applications using React.js, Angular, Flutter, Node.js, .NET Core, Python, MongoDB, SQL Server, Azure, and Firebase. QUESTIONS • Do you already have a prioritized list of unfinished modules and fixes?
$5 USD in 40 days
5.6
5.6

Namaste, I can help you complete and refine your existing Node.js + React + Flutter + MongoDB codebase while keeping everything modular, stable, and production-ready. My approach: * Node.js backend: refactor into clean service/controller structure, add missing modules, secure APIs, and generate Swagger (OpenAPI) documentation * React.js: complete unfinished screens, integrate with updated APIs, and maintain consistent UI patterns across the app * Flutter: align mobile views with web features, ensure cross-platform parity using Provider/Bloc where needed * MongoDB: optimize queries, add proper indexing, schema validation, and performance tuning * Dev workflow: Git-based development with clean commits, lint compliance, and unit/widget tests where applicable * Docker: ensure full project runs with a single `docker-compose up` Acceptance alignment: * Fully runnable project locally via Docker * Clean lint + passing tests * Stable API documentation (Swagger UI accessible) * Consistent UI/UX across web and mobile * Optimized database performance with indexed queries I’ve worked on similar full-stack systems where backend refactoring and cross-platform sync between React and Flutter were key priorities, especially in staged MVP-to-production transitions. Best regards, Amit G. Kavya Tech Nepal
$5 USD in 40 days
5.3
5.3

Building smart and scalable digital solutions is at the core of what I do. Your project fits perfectly with my expertise in API Development using Node.js, React.js for the web frontend, Flutter for mobile, and MongoDB as the data store. In addition to covering your required skillset, my approach emphasizes practical innovation. This means I not only ensure that the existing modules are extended or refactored to remain modular, secure and fully documented, but also leverage my UI/UX strategy skills to keep all screens consistent with your current design system. My understanding of Provider/Bloc for state management will also be valuable in building or polishing the corresponding Flutter views for iOS and Android. Moreover, setting up validation to guard against bad data in MongoDB has been a quintessential part of my work so far. Pushing work through Git with clear commit messages is second nature to me, and I deeply value unit/widget tests.
$5 USD in 40 days
4.9
4.9

Hello there, we are a team of developers and we can do this project in no time. Thanks Ashish Kumar.
$5 USD in 40 days
4.5
4.5

With my extensive experience in building efficient, production-ready applications using Flutter and Node.js -- which fit right into your project stack -- I believe I can be an invaluable asset. Having developed various applications across different sectors like e-commerce, booking systems, and more, I'm not just listing buzzwords here; I have the practical know-how to deliver high-performing applications. As someone who has successfully created real-time apps, integrated APIs and connected with Firebase by writing clean, maintainable code, I'm confident in my abilities to exhaustively address all your requirements. Moreover, being from Pakistan, where providing high-quality work at reasonable rates is a way of life, I completely resonate with your 'willingness to work within a low budget' sentiment. Not only am I offering competitive pricing but also an unwavering commitment to make these seemingly fragmented pieces fit together smoothly - turning your vision into a reality while respecting any constraints. Lastly, one of the most important things for a project like this is not just the development skills alone but also the ability to understand both the technical and business side of applications. Through my varied experiences and close collaboration with numerous startups and businesses on MVPs and app improvements, I honed this skill making me the ideal candidate for your project.
$3 USD in 40 days
4.1
4.1

With a vast array of portfolio offerings in the realms of API Development, Flutter, Node.js, and React.js, Web Crest is uniquely positioned to handle your needs. Our diverse skill set enables us to approach your project holistically and ensure that all facets are integrated seamlessly. We understand the importance of modularity and documentation when dealing with extensive codebase structures such as yours. Moreover, our proficiency in MongoDB facilitates comprehensive query optimizations—odds are high we will be able to swiftly locate and resolve issues arising from missing indexes or shoddy validation procedures. Commitment to clean code practices and effective version control is a core tenet of how we operate. Git utilization and the provision of concise commit messages align perfectly with our project management protocols for efficient tracking and transparency. Lastly, I must mention that beyond just enhancing the existing project functionalities, we at Web Crest also prioritize future-proofing our solutions. Our specialization in Cloud & DevOps ensures that your venture will be prepared for any eventuality, while maintaining swift development and deployment methodologies. In short, working with Web Crest means choosing amply experienced developers who continually assimilate the latest tech trends for maximum innovation in all your projects. You deserve scalable digital products tailored specifically to your needs, let's build something exceptional together!
$5 USD in 40 days
3.6
3.6

With over 13 years of experience in web and app development, I am confident that I am the right hire for your project. My strong suit includes extensive knowledge and proven skills in AngularJS, Express JS, MongoDB, NoSQL Couch & Mongo, Node.js and React.js (skills directly matching to your project). My clear goal is to deliver scalable and fully functional applications that provide value to businesses. In particular, my experience in working with diverse tech stacks like yours—Node.js, React.js, Flutter and MongoDb—gives me a sharp edge in understanding how these pieces fit together. I've built multiple end-to-end applications using this stack that are performing exceptionally well on both web and mobile platforms. This hands-on experience is crucial to add value to your existing codebase as you require- whether it’s extending or refactoring the Node.js API, finishing React.js screens wired efficiently with backend or building polished Flutter views that ensure seamless user experiences on both iOS and Android. Moreover, in today's demanding development environment, professionalism is key. Time after time my clients have praised my punctuality and consistent delivery of quality work—in time and within budget. I assure you that I will write clean code, fully documented using OpenAPI standards (using Swagger) for easier future extension.
$8 USD in 40 days
3.7
3.7

With my extensive experience in API development, Express JS, Flutter, MongoDB, Node.js and React.js, I make an exceptional candidate for your project. As a seasoned developer based in India, I've successfully completed numerous projects with similar tech stacks. I'm well-versed with Node.js for the backend, React.js on the web front-end, Flutter for mobile development and MongoDB as the data store. Hence, I am confident that my skills align perfectly with your requirements. One of my areas of expertise lies in improving module structure and security in Node.js APIs. I am proficient in making them highly modular, secure and fully documented with Swagger (OpenAPI). My knowledge also extends to creating and refining user interfaces and views using React.js and Flutter respectively while ensuring cross-platform compatibility. Moreover, I'm well-acquainted with optimization techniques for MongoDB queries including creating indexes and leveraging validations to guard against bad data. Ensuring smooth workflow using Git and maintaining clean codebase is something I emphasize on. Lastly, I always prioritize running thorough unit/widget tests along with maintaining a clean slate during linting. Choose me to transform your existing codebase into a robust end-product that not only runs flawlessly but also exceeds your expectations.
$5 USD in 40 days
3.2
3.2

Drawing from my 5+ years of experience and 40+ projects in building scalable digital solutions, I specialize in the stack you're looking for. Starting with web development, my expertise in HTML, CSS, JavaScript, React.js, and WordPress will help in getting your React.js screens finished and integrated seamlessly into the refreshed endpoints. Moving to mobile app development, my command over Flutter, along with other skills like Android (Java, XML) and React Native Development, ensures efficient creation or polishing of corresponding Flutter views. With my knowledge of Backend Development using Node.js/REST APIs and database handling with Firebase Authentication & Database and MongoDB, I can extend or refactor your Node.js API to be modular, secure and fully documented with Swagger. Having served various industries including E-commerce and CRM Systems, I emphasize on meeting acceptance criteria with a special focus on linting for a clean slate which you mentioned as one threshold for selection. In addition to these technical skills however, what sets me apart is my ability to offer end-to-end development solutions enhancing scalability as well as contributing to the long-term maintenance of the project: a trait that all of my previous clients have greatly appreciated. So let's transform your ideas into powerful applications together!
$3 USD in 40 days
3.4
3.4

Hi Looks like the project already has a solid structure but a few pieces are still refusing to work together smoothly which is pretty normal at this stage I can help complete and refine the existing stack by extending the Node.js backend with secure and modular APIs along with complete Swagger documentation I will finish the React.js screens and connect them with the updated endpoints while keeping the current design system intact I will also polish the Flutter application for both iOS and Android using Provider or BLoC for clean state management Alongside that I will optimize MongoDB queries create missing indexes add validations and write unit and widget tests where needed Mobile App Portfolio Tantrum AI MouseWait Resumas Web App Portfolio MetaFlow TrakMD WRM Nutrifactor AI ML Portfolio MetaFlow Stru Tantrum AI This looks like the right time to clean up and complete these modules before new features start stacking on top of unfinished work Best Areesha
$7 USD in 40 days
2.9
2.9

Hello, I have read your Complete proposal your Need a Experienced Flutter developer for flutter ,node js , mongodb and react js project. I have more than 3 years of work experience in Mobile application developemnt have a hand-on expeirence in Many terms like Figma to Flutter, Firebase, Google maps and Rest APIs integrations I am Confident that will handle your task in a reasonable price and time and I am available to start working on it Let's chat to Proceed
$2 USD in 40 days
3.0
3.0

Our proficiency extends to the precise technologies you require - Node.js for the backend management, React.js for web design as well as Flutter views for iOS and Android app consistency. We are adept at leveraging Provider/Bloc for seamless state management and utilising MongoDB proficiently for robust data storage solutions with efficient indexing and validation processes. We completely understand your requirement to unit test every aspect of the project and provide a clean slate so that it runs perfectly with one docker-compose up. Reach out to us and let's build something incredible together!
$8 USD in 40 days
2.9
2.9

Hello, I carefully reviewed "Node.js, React.js, Flutter, Mongo Db Work Needed" and fully understand the project requirements. With my experience in Node.js, AngularJS, React.js, I can deliver exactly what you're looking for with attention to quality, performance, and detail. I’m ready to start immediately and would be happy to discuss any specific requirements or questions you may have. Looking forward to working with you. Best regards, Umer
$8 USD in 2 days
2.2
2.2

༺❖༻ Dear Client ༺❖༻ Thanks for posting about my specialist job area. Your required skills perfectly match my experience and work style. I have strong experience in full stack development using Node.js, React.js, Flutter and MongoDB, building scalable APIs, frontend interfaces and mobile applications with clean architecture and modular design. For your project, I will extend and refactor your Node.js backend to ensure it is secure, modular and fully documented using Swagger OpenAPI. I will connect and complete React.js screens with consistent UI and proper integration with updated endpoints. I will also refine Flutter views for both Android and iOS using Provider or Bloc for stable state management. I will optimise MongoDB performance by improving queries, adding proper indexes and enforcing schema validation to ensure data integrity. All work will be managed through Git with clean commits, proper structure and unit and widget tests where required. Final delivery will include a fully working system that runs using docker compose with passing tests and clean linting. Let’s connect to review the current codebase so I can plan the fastest and cleanest way to complete the remaining modules. Best regards Glenn Bondoc
$5 USD in 40 days
1.4
1.4

Hello there! I am Syed Muhammad Ali and I have tailored my skills specifically to align with your project's demands. Having worked with a wide range of Node.js, React.js, Flutter, and Mongo Db projects in the past, I believe I am well-equipped to fully implement and optimize your tech stack. One of my primary focuses is on API development making sure they are modular, secure and backed by proper Swagger (OpenAPI) documentation. Likewise, I have ample experience in creating harmonious designs across multiple platforms without compromising on the core functionality - a skill that will be instrumental in ensuring that iOS and Android versions stay in tandem with their web counterpart. Moreover, I understand the importance of a clean codebase and efficient database management two things you've expressly sought for your project. Hence, my expertise lies in writing concise and well-documented code while leveraging industry best practices to create indexes and validating data. If this sounds like the set of skills that suits your requirements, then let's team up to make your product as technically strong and business ready as possible. Remember, for successful products its not just about aesthetics but also about technical robustness - you want them to be simultaneously scalable, secure & fully functional. Let me take away the hassle of completing your codebase; I will accomplish it with optimal performance for you at rates that are friendly to new entrepreneurs like yourself!
$5 USD in 40 days
1.0
1.0

Ahmad pur East, Pakistan
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Member since Oct 11, 2018
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