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I already have a production-ready React + TypeScript front-end built with Tailwind CSS. It is fully responsive, PWA-enabled, and ships with features such as selfie-based membership onboarding, hierarchy tracking, event proofing, a secure checkout modal, and a jurisdiction-aware privacy layer where Adhyakshas only access their assigned areas. What still needs attention is everything behind the scenes: • Data layer – the interface currently writes to localStorage. I want that logic swapped out for Firebase (Firestore + Cloud Functions where appropriate) so the app gains real-time sync, offline persistence, and user-scoped security rules that respect my existing jurisdiction model. • Authentication – the UI already guides users through phone-based OTP login. Please hook this flow to a live SMS gateway. I’m happy with Firebase; just expose the key credentials via environment variables and wire up the verification callbacks. • Payments – the checkout modal ([login to view URL]) is designed for Razorpay. Integrate their Web SDK, create the server-side order endpoint, and pass success/failure states back to the UI so the existing receipt UI lights up correctly. • Deployment – containerise or otherwise package the finished app, deploy it to a secure server (Vercel, AWS, Render or similar), and confirm that the Android PWA manifest installs cleanly. An SSL-secured custom domain is already available. Acceptance criteria – All reads/writes formerly hitting localStorage persist to Firebase and respect role-based rules. – A user can request and verify an OTP, sign in, and the session survives reloads. – A test payment on Razorpay returns a success response and updates the UI. – Lighthouse confirms the PWA is installable, and the live URL loads without console errors. If this scope fits your expertise in Firebase, Node/Express (or Cloud Functions), Razorpay integration, and DevOps, let’s align on timelines and milestones so we can push to production quickly.
Project ID: 40185138
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23 freelancers are bidding on average ₹6,776 INR for this job

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.
₹1,800 INR in 1 day
8.4
8.4

Having carefully reviewed your project description, I must say it aligns perfectly with my skills and experience. My work as a Senior Software Engineer has honed my expertise in key areas crucial to your project's success. From Firebase and Node.js for robust back-end and data layer performance to my proficiency in various mobile and web frameworks including ReactJS, NextJS, Flutter, React Native, Swift, and Kotlin that ensure compatibility across platforms, you're guaranteed comprehensive solutions from inception to delivery. Moreover, in optimizing your app's performance, I'm well-versed with industry-best practices and tools like Lighthouse to maximize on-site optimization crucial for PWA installability according to your project acceptance criteria. I fully understand your needs of real-time data sync, offline persistence and user-scoped security provisions in accordance with jurisdiction model which is exactly what Firebase is expert at. Having successfully delivered similar projects previously, I am not only conversant with integrating Firebase (Firestore + Cloud Functions) into existing projects but also understand the paramount importance of secure deployment. Being familiar with AWS, Vercel and other popular platforms, I will ensure swift deployment to a secure server while keeping the Android PWA manifest error-free.
₹1,050 INR in 7 days
5.4
5.4

I’ve reviewed your requirements and this is my understanding: you already have a production-ready React + TypeScript PWA with Tailwind CSS and complex front-end flows in place, and you’re now looking to complete the entire backend and infrastructure layer so the app is fully live, secure, and scalable. I have strong experience replacing localStorage-based state with Firebase Firestore and Cloud Functions, implementing real-time sync, offline persistence, and role-based security rules that align with existing jurisdiction and access models. I’ll refactor the data layer so all reads and writes persist correctly in Firebase while preserving your current UI behaviour. I’m also comfortable integrating Razorpay’s Web SDK, building the required server-side order creation endpoint, and ensuring success/failure callbacks correctly trigger your existing receipt and checkout UI logic. Finally, I’ll handle deployment and packaging, ensuring the PWA installs cleanly on Android, loads over SSL on your custom domain, and passes Lighthouse checks without console errors. I work with clear milestones, production-focused code, and fast turnarounds. Once we align on timeline and deployment target, I can move quickly to push this app to production. Best regards, Kapish
₹2,050 INR in 7 days
3.3
3.3

Hi there, I am a strong fit for this scope because I regularly take production-ready React PWAs and wire them to secure, scalable backends without changing the existing UI logic. I have hands-on experience replacing localStorage with Firebase Firestore, enforcing role- and jurisdiction-based security rules, and integrating phone OTP auth with persistent sessions. I work with Firebase Auth, Firestore, Cloud Functions or Node APIs, Razorpay Web SDK, and clean environment-based configuration for keys and secrets. I reduce risk by migrating data flows incrementally, validating auth and payment callbacks end to end, and testing PWA installability and Lighthouse scores before deployment. I am available to start immediately and can move this to a live, error-free production deployment on your chosen platform. Regards Chirag
₹2,000 INR in 2 days
2.6
2.6

Hi, With my expertise in both full-stack development and automation architecture, your project aligns perfectly with my skillset. I have 5+ years of experience working on MERN stack applications, which includes React and Node.js — the core technologies you've used within your project. Moreover, I'm very familiar with Firebase as well as utilizing Cloud Functions for backend tasks, and can efficiently swap out the localStorage implementation with real-time sync and offline persistence that Firestore provides. In addition to backend and deployment, I also have a profound understanding of sms gateways like the one you want to integrate, along with implementing payment gateways like Razorpay. Precisely speaking, I assure you that I can fulfill every requirement outlined for your project while keeping it secured and scalable. Lets have a chat to discuss your goals Warm regards Usama
₹1,050 INR in 3 days
0.4
0.4

As a seasoned full stack developer with deep expertise in your project’s essential technologies, I am confident that I am the perfect match for your backend and deployment needs. With over 5 years of experience, my work spans from SaaS platforms to AI automation and FinTech systems. Not only will this provide me capabilities to integrate your React PWA with Firebase, Razorpay and handle SMS integration, it also equips me with a keen eye for detail and dedication to delivering results. I have hands-on experience with Firestore, Cloud Functions (Node/Express), and Razorpay. Moreover, I have an established proficiency in deploying applications securely using AWS, Vercel or similar services, making certain that your product remains uncompromised. For me, building software is not just about code but creating solutions that drive real business value. I understand the significance of clean architecture and performance optimization which has been the core of my approach throughout my career. Let me shoulder the heavy workload for you, ensuring a smooth transition from localStorage to realtime sync while respecting your existing jurisdiction model. With me by your side, rest assured that the app will be well-functioning on all fronts - whether it is user authentication or seamless payment flow.
₹1,050 INR in 7 days
0.0
0.0

Hello, I’m Ankur, a freelance developer with a dedicated team of professionals. I read all your requirements for Website and I assure you that I will provide high-quality work at the proper time. Additionally, we also provide you 3 months of support from our side. As a Full Stack Developer, I specialize in Web and App Development, boasting a portfolio of stunning projects with top-notch UI/UX design. My expertise spans Flutter (for both Android and iOS), PHP, and WordPress, and I bring over 7 years of experience to the table. Whether it’s websites, applications, or e-commerce platforms, I’ve got you covered. But I’m not limited to just coding. My skill set extends to graphic design and logo creation, offering you a one-stop solution for all your project needs. With a track record of over 500 completed projects, I am committed to delivering nothing short of excellence. My ultimate goal is your complete satisfaction. Thank you for considering me for your project. I’m ready to transform your vision into a reality that stands out in today’s competitive landscape. Best Regards, Ankur Hardiya
₹1,050 INR in 7 days
0.0
0.0

Keeping in mind your project complexities and requirements, allow me to explain how my skills align perfectly with the job description. Although my primary backend experience lies in Django and FastAPI, I have a deep understanding of JavaScript, which is vital for your project's heavy reliance on React. Additionally, I can effectively deploy your application, whether it's containerization or implementing another approach suitable for you. My extensive DevOps experience with AWS EC2 and Lambda guarantees you seamless Vercel, AWS, Render or similar deployments. Furthermore, my exposure to cloud technologies like Firebase and my proficiency in PostgreSQL and MongoDB make me ideal for shifting your existing localStorage implementation to Firebase's Firestore. This database transition will provide you with real-time synchronization and offline persistence – essential features for a highly functional Progressive Web Application like yours. Lastly, although I haven't worked directly with Razorpay before, my experience in PHP translates into an aptitude to work with external APIs integrations that will be relevant during your payment gateway integration process. Alongside this, I bring sharp problem-solving abilities to ensure a clean receipt UI lighting up as expected.
₹1,050 INR in 5 days
0.0
0.0

With my extensive experience in full-stack and mobile app development, I'm confident that I'm the perfect fit for your project. A seasoned expert in React, TypeScript, and Node.js, I specialize in creating robust backend solutions with smooth depoyment and optimal performance. My proficiency in Firebase and knowledge of Cloud Functions aligns perfectly with your need to transition from localStorage to a more secure, real-time sync database. One of the key areas where my expertise shines is payment integration, which makes me highly suitable for your Razorpay requirement. I have successfully integrated numerous payment gateways into various applications for seamless transactions. Additionally, my extensive knowledge in DevOps will ensure that your app is containerized or packaged and deployed securely on the most appropriate server Vercel, AWS, Render etc. Moreover, I have a strong command over mobile development as well and can handle PWA-related tasks efficiently including ensuring an installable PWA on Android. All in all, if you are looking for clean architecture, top-notch scalability solutions with timely delivery and consistent communication - you have found your developer! I will make holding the one-stop solutions torch for your software needs my mission. Let's connect and turn this scope into reality together
₹600 INR in 2 days
0.0
0.0

We understand that you are looking for a reliable solution to meet your web application needs within a moderate budget. Our team specializes in building scalable, maintainable applications using Node.js and React.js, ensuring responsive front-end experiences coupled with robust backend logic. With hands-on experience in MERN stack projects, we can deliver a solution that balances performance and simplicity while staying within your budget. Let’s discuss your specific requirements so we can outline a clear roadmap and timeline to bring your project to life efficiently.
₹945 INR in 7 days
3.2
3.2

I’ve reviewed your project, and it aligns perfectly with my expertise. I can take your production-ready React + TypeScript + Tailwind CSS front-end and implement the full backend and deployment stack efficiently. Here’s how I’ll approach it: 1. Data Layer Replace all localStorage logic with Firebase Firestore, including Cloud Functions where needed. Implement real-time sync, offline persistence, and user-scoped security rules that respect your existing jurisdiction model. 2. Authentication Hook your existing OTP-based login flow to a live SMS gateway. Use Firebase Auth with environment-based credentials and properly wired verification callbacks. 3. Payments Integrate Razorpay Web SDK. Create a server-side order endpoint. Pass success/failure states back to the UI so the receipt interface works seamlessly. 4. Deployment Containerize or package the finished app. Deploy to a secure server (Vercel, AWS, Render, etc.). Ensure the PWA installs cleanly on Android and works on your SSL-secured custom domain. Acceptance criteria I’ll deliver: All previous localStorage reads/writes persist to Firebase with role-based rules Fully functional OTP login with persistent sessions Test Razorpay payment successfully updates the UI Lighthouse confirms installable PWA with no console errors I bring extensive experience with Firebase, Node/Express, Razorpay integration, and DevOps, and I can help push this
₹1,050 INR in 7 days
0.0
0.0

I have solid experience integrating React frontends with Firebase (Firestore, Cloud Functions, Security Rules) and building role-based access models. I can migrate your localStorage logic to Firestore with real-time sync and offline persistence, implement phone OTP authentication using Firebase + SMS gateway, and securely expose credentials via environment variables. I have previously integrated Razorpay Web SDK, including server-side order creation and success/failure callbacks to update UI state correctly. I will containerize and deploy the app to a secure environment (Vercel/AWS/Render), ensure PWA installability, clean Lighthouse results, and proper Android manifest setup. I can deliver this in 7 days with clear milestones and production-ready code.
₹100,000 INR in 7 days
0.0
0.0

Hello understand that this project requires developing or connecting backend for a React Progressive Web App (PWA) and deploying it on a hosting platform. I have hands-on experience with React, Node.js/Express, API integration, and cloud development (Vercel, Netlify, Heroku, AWS). I can set up a robust backend, connect it seamlessly with your React PWA, implement authentication and datebase functionality if needed, and deploy the application to ensure it is fully functional, performant, and PWA-compliant (offline support, service workers, manifest). I am highly organized, detail-oriented and committed to delivering a complete end-to-end solution that works reliably across devices. I can start immediately and provide clear updates throughout the process.
₹1,500 INR in 7 days
0.0
0.0

Lucknow, India
Member since Jan 28, 2026
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