
Closed
Posted
Paid on delivery
I have an operational platform built around a FastAPI backend and a React-based web frontend. The core foundations are in place, but I now need a reliable local partner in Noida to carry the project over the finish line and into the mobile space. Backend My FastAPI services are live, yet they still need performance optimisation, a few new endpoints and some lingering bugs resolved. Clean, well-documented code and test coverage are a must so future iterations remain painless. Web Frontend The React application already runs in production. The next sprint centre on adding new features while simultaneously lifting the overall experience with UI/UX refinements, stronger mobile responsiveness and a refreshed visual identity that matches our brand guidelines. Mobile Apps Once the web work is stable, I want the same feature set delivered as native-quality apps on both iOS and Android. I am open to React Native, Flutter or another modern cross-platform approach if it keeps parity with the web codebase and streamlines ongoing maintenance. Local Collaboration Because past remote engagements cost me valuable time and money, in-person trust matters. I expect regular face-to-face syncs in Noida for planning, demos and quick problem-solving. If you are nearby and can commit to transparent communication and predictable delivery, we will get along well. Key Deliverables • Optimised, bug-free FastAPI backend with additional endpoints • Enhanced React web app featuring new functionality and upgraded design • Cross-platform mobile applications mirroring web features, ready for App Store & Play Store submission • Clear documentation (API, setup, deployment) and hand-off support Please share links to comparable work—especially projects that combine FastAPI, React and mobile builds—and indicate your availability for on-site meetings in Noida. I’m ready to start immediately with the right collaborator.
Project ID: 40422887
49 proposals
Remote project
Active 22 secs ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
49 freelancers are bidding on average ₹26,830 INR for this job

Hello, My name is Manish, and I lead a team experienced in FastAPI, React, and cross-platform mobile app development. We can help you optimize your backend (performance, bugs, new endpoints), enhance your React web app with better UI/UX and features, and then build matching mobile apps using React Native or Flutter. We follow clean, well-documented code practices and can support regular in-person meetings in Noida for smooth collaboration. You’ll receive an optimized backend, improved web app, and mobile apps ready for launch, along with proper documentation and handover. Thank you, Manish
₹35,000 INR in 15 days
8.0
8.0

Hello, I’ve reviewed your platform and can help take it from its current state to a polished, production-ready system across web and mobile. I have experience working with FastAPI + React stacks, focusing on backend optimization, clean API design, and improving frontend UX while maintaining performance. I can refine your existing services, add endpoints, fix bugs, and ensure proper test coverage and documentation. On the frontend, I’ll enhance UI/UX, responsiveness, and align everything with your brand. For mobile, I recommend React Native to maintain feature parity and reuse logic efficiently. I understand your preference for reliable collaboration and can coordinate regular on-site or scheduled syncs as needed. I’ve worked on similar full-stack + mobile projects and can share examples. Ready to start immediately and discuss milestones. Best regards
₹25,000 INR in 7 days
7.0
7.0

With my decade-long experience in developing web and mobile applications, I'm confident that I can take your existing FastAPI backend and React frontend to the next level and simultaneously create Android and iOS apps through React Native, Flutter or any other modern cross-platform approach you prefer. I'm very well-versed in API development, a key skill you need for your backend work that requires optimization, new endpoints, bug resolution, and scaling - areas where my contributions promise to be efficient and effective. In conclusion, with a solid 10+ years of delivering high-quality projects successfully across a wide range of technologies including React, FastAPI, Flutter, iPhone development, coupled with my focus on building scalable solutions that generate results - I am confident that together we can power your digital platform to completion with excellent performance, enhanced design and mirror it onto Android and iOS platforms.
₹27,500 INR in 7 days
6.4
6.4

I have read your job post and I can help complete your FastAPI, React, and mobile app project. I am a full-stack developer with experience in FastAPI, React, and cross-platform mobile apps like React Native and Flutter. I have worked on similar systems with API, web, and mobile together. I can work on backend optimisation, fix bugs, and add new endpoints with clean and tested code. For the frontend, I will improve UI, add features, and make it fully responsive. Then I will build mobile apps with the same features for iOS and Android. My approach is to keep code simple, stable, and easy to maintain. I am available for regular in-person meetings and clear communication. You will get a complete, smooth, and ready-to-launch product.
₹22,000 INR in 20 days
5.8
5.8

As someone who has been in the business of creating scalable, high-quality, and user-friendly applications for over 5 years now, I am confident that I have the unique skill sets required to deliver on your project in Noida. Having successfully built applications utilizing FastAPI, React, and mobile development frameworks like React Native and Flutter, I am well-versed in everything you need to bring your project to completion. My range of expertise spans API development, mobile app development, web development, website design to name a few. Moreover, my ability to integrate APIs deploy databases and optimize performance can guarantee the seamless delivery of your key deliverables - optimized FastAPI backend with new endpoints, enhanced React web app while incorporating UI/UX refinements and eventually delivering native quality apps for iOS and Android. Apart from my technical skills, what separates me from the rest is my deep-rooted belief in transparent communication and on-time delivery. Local collaboration is important to you therefore regular face-to-face syncs for planning, demos to quick problem-solving won't be an issue. I don't just build applications; I turn ideas into realities through code ensuring its quality and efficiency throughout the process. By choosing me you are not just getting a developer but a long-term technology partner. Let's connect soon and create magic together!
₹25,000 INR in 7 days
5.5
5.5

Hi, I am an IITian , worked at fortune 500 companies. I will make it a reality for you. With 7+ years of experience I will deliver a high-quality solution using modern technologies and industry best practices. Kindly click on the chat button so we can discuss and get started. Will share you my prior projects done and my resume too. I have been doing freelancing since 2019 worked at top MNCs in both USA and India. Lets connect
₹12,500 INR in 7 days
5.3
5.3

Hello there, we are a team of Senior Full Stack Web and Mobile App Developers, AI, ML experts. We can do this project. Please, send me a message to discuss the work. Thanks Ashish Kumar.
₹25,000 INR in 7 days
4.6
4.6

Hi there, I’ve reviewed your FastAPI backend and production React frontend requirements and can deliver onsite in Noida to finish web features and produce native-quality mobile apps that match the web parity and brand. - Optimise FastAPI performance, implement requested endpoints, fix remaining bugs, add unit/endpoint tests and API documentation. - Enhance React web app: add new features from your backlog, improve mobile responsiveness, apply refreshed UI per brand guidelines, and produce component-level tests. - Deliver cross-platform mobile apps (React Native or Flutter per parity decision), CI build pipelines, and prepare App Store & Play Store submission packages. - Risk/quality-control: staged deployment with backup checkpoint and post-deploy validation to ensure minimal downtime. Skills: ✅ FastAPI ✅ React ✅ React Native / Flutter integration ✅ API development & CI/CD ✅ Mobile responsiveness, performance & monitoring Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available for Noida on-site sprints and immediate start; Are you available for weekly on-site planning and demos in Noida or do you prefer a hybrid cadence with specified on-site milestones? Best regards,
₹35,899 INR in 3 days
4.7
4.7

With over 6 years of experience, I have developed an extensive skill set in both mobile app and web development that I believe aligns perfectly with your project's requirements. I am well-versed in not only React and FastAPI but also open to using other modern approaches like React Native and Flutter for streamlining ongoing maintenance. One major advantage of working with me is my commitment to delivering high-quality and performance-driven solutions that exceed client expectations. This is evident from my portfolio of projects, some of which relate to your specific needs such as video calling apps, online classes, sales management apps, etc. To add to this, I have managed to maintain a clean track record when it comes to documentation, API setup, deployment, among others –- all key deliverables in your project. Moreover, being a local developer in Noida means that we can ensure regular face-to-face syncs for planning, demos, or quick problem-solving. Given your preference for local collaboration considering past remote engagement troubles, my proximity can bring us closer towards building trust and minimizing any potential miscommunications. Let's collaborate and turn your platform into a native-quality mobile app thoroughly mirroring the web features while maintaining top-notch performance with optimized backends!
₹12,500 INR in 7 days
4.5
4.5

With my skills and your project description, I am confident that I am the perfect fit for your Web and Mobile App Completion. As a Full-Stack Developer, I have extensive experience working with React, FastAPI, and mobile app development using React Native and Flutter. This means I can cater to all of your project's needs within one cohesive environment, ensuring efficiency and consistency throughout every stage of the development process. Aside from technical expertise, my team and I take pride in delivering clean code with optimized performance - guaranteed to excel in meeting your demand for well-documented codes, test coverage, and bug fixes. Our cloud-native architectures powered by AWS, Azure, or Google Cloud ensure scalability, reliability, security, and efficiency. With this approach we can develop a smooth and efficient API setup that will help streamline deployment and maintenance processes. Having completed similar projects that combine FastAPI, ReactJS ,and mobile builds before, I am well-prepared to create an outstanding experience for you. Additionally, as a local partner based in Noida, I offer you the ability to maintain productive in-person meetings. This will enable us to collaborate seamlessly on planning sessions, demos, problem-solving as well as ensure transparent communication throughout the entirety of the project.
₹25,000 INR in 7 days
4.6
4.6

Hi, I’ve reviewed your requirements and can deliver a reliable, scalable, and well-structured solution aligned with your goals. I’m a full-stack developer with 4+ years of freelance experience, specializing in MERN, PHP/Laravel, WordPress, Shopify, and Flutter for Android & iOS apps. I focus on clean code, intuitive UI, and performance-driven development to ensure secure and user-friendly applications. I’ve handled projects end-to-end—from planning and design to deployment and support—while maintaining clear communication and meeting deadlines. My approach is simple: understand your vision, set realistic timelines, and deliver exactly what’s promised with long-term value in mind. I’d be happy to discuss your project in detail and suggest the best approach to achieve your objectives efficiently. Looking forward to working with you. Best regards, Arshiya
₹25,000 INR in 7 days
3.9
3.9

As a seasoned professional with over 10 years of versatile experience in full-stack web and mobile application development, I believe I am the ideal fit for your project. Having worked extensively with React, FastAPI, and additionally experienced in cross-platform development like Flutter, my skills align perfectly with your needs. I am capable of not just completing the unfinished aspects of your platform, but also optimizing performance, resolving bugs, and enhancing the user experience. What sets me apart is my commitment to delivering high-quality solutions and transparent communication. My experience spans from core back-end technologies like Node.js to front-end frameworks like React.js - ensuring no aspect of your project is overlooked. I understand that clean code, solid documentation, and test coverage are paramount for seamless maintenance and future iterations - something that I prioritize in all my projects. Combining my technical know-how, deep experience with FastAPI & React as well as in-person local collaboration systems means hiring me would not only get your project completed to the highest standard but it will be done so in an enjoyable way. Thank you for considering my proposal. Let's connect to discuss further how I can help achieve your vision for this platform!
₹25,000 INR in 7 days
3.5
3.5

Delivering performant and scalable FastAPI endpoints requires a focus on efficient data handling and asynchronous operations – I’ve successfully optimized similar backend services for previous clients, ensuring responsiveness and reducing server load. I can apply that experience to your existing FastAPI implementation, focusing on the new endpoints and bug fixes you’ve outlined, while ensuring clean, well-documented code with appropriate test coverage. Given the 7-day timeframe and the scope of backend optimization, frontend enhancements, and mobile app planning, I estimate a phased delivery, prioritizing the backend work within the first 4 days, followed by frontend refinements and initial mobile app architecture design.
₹26,384 INR in 7 days
3.9
3.9

I can optimize your FastAPI backend, upgrade your React frontend, and build matching iOS/Android apps (React Native/Flutter) with clean, scalable code. Available for on-site collaboration in Noida, with fast iterations and clear communication. Ready to start immediately.
₹25,000 INR in 7 days
3.3
3.3

Hello, I can help you take your FastAPI + React platform through its final stage and extend it into a fully production-ready mobile ecosystem. I have strong experience working with FastAPI backend systems and React frontends, focusing on performance optimization, clean architecture, and scalable API design. I can refine your existing backend by improving response times, fixing remaining bugs, adding new endpoints, and ensuring proper test coverage with clean, maintainable code. On the frontend side, I will enhance your React application with new features, UI/UX improvements, better mobile responsiveness, and a refreshed visual alignment with your brand guidelines, while ensuring production stability. For mobile, I can develop cross-platform apps using React Native or Flutter, keeping full feature parity with the web app and ensuring smooth performance on both iOS and Android, ready for App Store and Play Store deployment. I also prioritize clean documentation (API, setup, deployment) and structured handover so future development remains simple and scalable. I’m open to regular in-person collaboration in Noida for planning, reviews, and fast iteration cycles, as clear communication and alignment are key to successful delivery. Q: Can we schedule a quick discussion to review the current system and plan the next sprint?
₹25,000 INR in 7 days
2.9
2.9

Hello, I'm a Senior Python Developer and AI Tech Lead with extensive experience building production-ready applications. I'd love to help you with this project. **Backend Development:** - Expert in FastAPI and Django for high-performance APIs - Experience with async processing, caching (Redis), and message queues - Database design with PostgreSQL, MongoDB - Docker containerization and cloud deployment (AWS/GCP) **Core Strengths:** - Clean, maintainable code architecture - Test-driven development (pytest, unittest) - CI/CD pipeline setup (GitHub Actions, GitLab CI) - Agile development with clear communication **My Approach:** 1. Understand requirements and propose technical architecture 2. Set up development environment and CI/CD 3. Implement features with regular updates 4. Comprehensive testing and documentation 5. Smooth deployment and handover I'm available to start immediately and can dedicate full-time effort to deliver quality results on schedule. Looking forward to discussing your project in detail. Best regards, Gowtham
₹22,644.05 INR in 30 days
2.7
2.7

As a top-rated and globally trusted software developer with over 5 years of experience, I bring the unique skillset you're looking for to successfully complete your project. Having built 200+ mobile apps and 350+ web apps, I understand how crucial it is to have clean code, test coverage and high-performance optimization for a smooth user experience. I've worked extensively with FastAPI, React and mobile app development using Flutter, making me an ideal candidate for your requirements. My skills go beyond just code; I focus on designing pixel-perfect UIs that not only look great but are intuitive and impactful. I’m committed to ensuring strict adherence to deadlines, maintaining transparent communication at all times and providing you with long-term support - vital aspects given your focus on local collaboration in Noida. I'm confident that my experience and expertise will allow me to deliver an optimised backend, enhanced web application, and cross-platform mobile applications that truly align with your vision. With me, you can expect nothing but the best - predictable delivery, clear documentation, efficient problem-solving and hand-off support. Let's discuss further how we can make your project a success together!
₹25,000 INR in 7 days
2.4
2.4

The part that stands out here is the need to maintain consistency across FastAPI, React, and the future mobile apps without creating separate systems that become difficult to maintain later. Since the backend and web platform are already live, the challenge is less about starting from scratch and more about improving stability, scalability, and product cohesion while new features continue shipping. I’d approach this in phases: first tightening the FastAPI layer with performance improvements, endpoint cleanup, and stronger test coverage, then refining the React experience with responsive UX upgrades before extending the same architecture cleanly into cross-platform mobile apps. Keeping API contracts and shared business logic structured early usually makes long-term maintenance far smoother. I’ve worked on full-stack platforms involving FastAPI backends, React frontends, and mobile expansion where production stability and iterative feature development had to happen in parallel. I’m also comfortable with structured collaboration and regular planning syncs for faster iteration cycles. Happy to discuss a practical rollout plan if useful.
₹26,000 INR in 7 days
2.2
2.2

Hello, I have 8 years of experience in Web Development and Mobile App Development, specializing in React and FastAPI technologies. I understand your requirements for completing the operational platform, focusing on optimizing the FastAPI backend, enhancing the React frontend, and developing native-quality mobile apps for iOS and Android. As a Professional Web Developer and Creative Designer with expertise in Web Development and Social Media Marketing, I am confident in providing a professional solution that aligns with your project description. I am ready to collaborate with you and ensure the successful completion of the project. Let's discuss further details in the chat. Looking forward to the opportunity to work together. Best regards
₹25,000 INR in 7 days
1.4
1.4

Hi, I can join locally in Noida to finish your FastAPI + React platform and extend it to mobile (React Native/Flutter). I’ll optimize APIs, add endpoints, fix bugs, improve UI/UX, and deliver feature-parity apps with clean docs. Approach: performance tuning, modular APIs, shared logic, weekly in-person demos. Questions: preferred mobile stack? current pain points? code access + meeting schedule?
₹37,500 INR in 7 days
0.9
0.9

Noida, India
Member since May 6, 2026
₹12500-37500 INR
₹12500-37500 INR
€250-750 EUR
$15-25 USD / hour
$30-250 USD
₹37500-75000 INR
$250-750 NZD
$750-1500 CAD
$30 USD
₹600-1500 INR
$250-750 USD
₹1500-12500 INR
₹12500-37500 INR
$10-30 USD
$250-750 USD
€750-1500 EUR
$250-750 USD
€8-30 EUR
$100-20000 USD
$15-25 USD / hour
$250-750 USD
₹12500-37500 INR