Full-Stack OLX-Style App Build

@n2rtechnologies

Hello, I understand you’re looking to build a robust cross-platform marketplace app similar to OLX. I have extensive experience in developing full-stack applications that facilitate seamless user interactions, secure transactions, and effective listings management. My focus will be on delivering a user-friendly interface and a scalable architecture that can grow with your needs. In addition to the core functionality, I will ensure that the app includes essential features such as user authentication, item categorization, and a reliable messaging system. My commitment is to create a high-quality product that meets your vision and exceeds user expectations. Let’s discuss how we can bring your marketplace idea to life. Regards, Nurul Hasan

@Rajoriadares

Hello Client, Greeting of the day!!!! I read your job description. I have STRONGEST Mobile development expert team and have been DEVELOPED 150+ Apps, three dating app, Two Customer and service provider app based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks

@santoshkumars17

With over 5 years of experience in full-stack and mobile app development, I can provide you with the comprehensive skills necessary for this project. Being fluent in both frontend and backend technologies including React Native and PHP, I can efficiently build not only a responsive web app but also native or cross-compiled mobile apps. Given my specialization in API integration and database management, data sync across all three clients will be seamless. Moreover, my familiarity with Flutter brings increased compatibility which is essential for cross-platform support. Considering that your project also requires specific features such as user authentication via phone numbers, product browsing and search, real-time messaging, and various payment methods, I believe my expertise would add tremendous value to your app. My commitment to clean and optimized coding standards could ensure that the project remains scalable and performance-efficient throughout its lifespan. Additionally, my on-time delivery track record would assure you meet realistic milestones within a timeline that's fair and suits your needs. I'm eager to discuss further details with you so we can get started on building the amazing marketplace application you envision!

@GraphicsVolume

Hi , Hope you’re doing well! Thanks for sharing the details of the project! Bringing 8+ years of expertise, I can do it your project with best solutions. I’m ready to start immediately. I focus on work with clean, maintainable design, transparent communication. Work Portfolio & Reviews: https://www.freelancer.com/u/GraphicsVolume Excited to get started! Let’s jump on a quick chat to get your project moving! Best regards, Sarika Sharma

@abhishek060

Hi, I have experience delivering full-stack, cross-platform marketplace applications and can build a secure, scalable web and mobile solution with phone-based authentication, real-time chat, and integrated payments, taking it through to successful store submission. Can we discuss on chat. Regards Abhishek

@ParasTech7

I have 21 years of experince, IIT graduate , Principal Engineer, i have done similar application, in React native, the auth can be done with jwt, with real time notification with sqs and in app purchase with payment integration. I can build your entire application. Product listing will be done using search filters in database, , real time socket based chat and in app payment. Can you please share more details to proceed

@MuhammadAsad108

✔ I deliver end-to-end marketplace solutions — web + Android + iOS — fully tested and production-ready. ✔ Proposed Workflow (OLX-style Marketplace) Idea & Scope Refinement ⟶⟶ UX/UI Wireframes & Flow Design ⟶⟶ Backend/API Architecture & Database Design ⟶⟶ Web App Development (Responsive) ⟶⟶ Cross-Platform Mobile App Development (Flutter / React Native) ⟶⟶ Payment Integration (Google Pay / Apple Pay) ⟶⟶ Testing, Bug Fixes & Store Submission ⟶⟶ Admin Panel & Final Handover How I’ll Approach Your Project ✔ Phone-number authentication — secure OTP verification for all clients; no email or social login needed. ✔ Listings & Search — robust product creation, keyword search, and categorization for private & business sellers. ✔ Real-time messaging — fully in-app chat synced across devices using WebSockets or Firebase. ✔ Cross-platform consistency — Flutter or React Native ensures identical behaviour on Android, iOS, and web (PWA if desired). ✔ Payment gateway integration — Google Pay and Apple Pay tested for sandbox and live transactions. ✔ Admin moderation panel — minimal but functional for user, listing, and message management. ✔ Clean documentation & handover — API docs, deployment instructions, and store submission guidance included. Best Regards, Asad Full-Stack & Mobile Marketplace Developer | Cross-Platform Apps | Payments & Real-Time Messaging

@dushyant317

Hello, I’ve carefully reviewed your project requirements and clearly understand the tasks involved. I have 13 years of experience and strong expertise in the exact skills this project requires. I have successfully delivered similar projects before and can share relevant samples if needed. I will complete this within your expected timeline while maintaining quality and clear communication. I look forward to working with you and contributing sincerely to your project’s success.

@khushiArt

Hello, Hope you are doing well. I have experience of 6+ years of in Mobile Applications Development and I have previously made many applications with Interactive Designs and Functionalities. I have reviewed your requirement. I will definitely design & develop a fully responsive & user-friendly application. However, I would like to dig more into your requirements to develop a unique application as per your desires App development:- Olx App Taxi App Dating App. Educational App Multivendor App. Hotel and Restaurant Booking App. Doctors/ hospital management App. Please have a look at my portfolio link : https://www.freelancer.com/u/khushiArt Best Regards Khushbu

@ankushs172

✅Hello, Expert here, I can do it for you perfectly✅, நான் ஒரு full-stack mobile & web developer. OLX மாதிரியான cross-platform marketplace app-ஐ Web, Android, iOS மூன்றிலும் end-to-end build செய்து deliver செய்ய முடியும். Phone-number based authentication, real-time chat (WebSockets), product listing & search, Google Pay / Apple Pay checkout, common backend API, database, மற்றும் basic admin panel—all-in-one secure, scalable architecture-ல implement செய்வேன். Preferred language Tamil-ல regular communication, progress updates, மற்றும் review sessions நடத்த முடியும். Best Regards, store submission ready builds, documented source code, மற்றும் clear milestones உடன் timely delivery guarantee செய்கிறேன். Best regards.

@papagueye

As a senior full-stack developer, my expertise in Flutter and Web Development aligns exactly with your project requirements, especially for a marketplace app like the one you envision. With a strong understanding of backend tools like NestJS, Prisma, and PostgreSQL, I am more than capable of building and exposing the common backend/API as well as the admin panel needed for seamless user and listing management. In terms of similar work, I've successfully developed numerous applications that involve user authentications secured by phone number verification, real-time in-app messaging features, and checkout processes that support Google Pay and Apple Pay. One key example is an e-commerce application that shares several features with your OLX-style app. This experience has not only strengthened my proficiency but also sharpened my skills on data synchronization across all three clients to ensure a smooth deployment for both Android and iOS- something I know will be important to you.

@chiragiscoding

• Frontend (Web + Mobile): Flutter (single codebase for Android, iOS, Web) • Backend API: PHP (Laravel) • Database: MySQL • Auth: Phone number OTP (Firebase Auth / Twilio) • Chat: Firebase Realtime DB or Socket-based messaging • Payments: Google Pay & Apple Pay via Stripe • Admin Panel: Laravel + Blade dashboard Features Covered ✔ Phone number login (OTP only) ✔ User profiles (private & business sellers) ✔ Product listing, browsing & keyword search ✔ Real-time buyer–seller chat ✔ Checkout with GPay & Apple Pay ✔ Admin panel for users, listings & reports ✔ Deployment-ready builds for Play Store & App Store I will provide clean source code, documented APIs, and full setup instructions. I am comfortable working via AnyDesk/Zoom for live debugging and progress updates. Looking forward to working with you. Thank you.

@nadiad382

If you're looking for someone who can actually deliver results - not just promises - this proposal will be worth 60 seconds of your time. I can solve the exact problem you described—building a seamless, cross-platform marketplace app with phone-number authentication, real-time messaging, and integrated payment flows across Web, Android, and iOS. I understand you need a clean, professional, user-friendly platform with a robust backend and admin panel, plus smooth deployment on stores. I specialize in full-stack development using React Native or Flutter for mobile, Node.js/Express for backend, and have experience delivering end-to-end projects. While I am new to Freelancer, I have tons of experience and have done other projects off site. Let's move forward and turn this into a successful project. Regards, Nadia Du Preez

@ShreyTanna

I’ve read this carefully. You’re building a true OLX-style marketplace with one backend powering Web, Android, and iOS, phone-number authentication only, real-time chat, and native payment flows. The scope is clear and end-to-end ownership is exactly how this should be built. What I’ll build • Cross-platform marketplace apps for Web, Android, and iOS • Phone-number based authentication with OTP (no email/social) • User profiles for private and business sellers • Product listing, browsing, and fast keyword search • Real-time in-app buyer ↔ seller messaging • Google Pay & Apple Pay checkout for paid items / featured listings • Shared backend API, database, and minimal admin dashboard Deliverables you’ll get • Full source code for web, Android, and iOS • Backend repo with documented APIs • Tested builds ready for store submission • Admin panel for moderation and management Why me • I reply fast and keep communication clear (Tamil coordination supported) • Strong experience building full marketplace platforms end to end • Proven excellence with real-time chat, payments, and multi-platform sync • Focused on clean architecture, scalability, and on-time delivery Happy to share similar marketplace work, confirm the stack, and break this into clear milestones so we can start immediately.

@karthikresonite

Hello, this is Resonite Technologies. We are a proven full-stack team experienced in building cross-platform marketplace apps like OLX, covering Web, Android, and iOS end-to-end. We can handle everything from architecture, coding, and backend/API setup to final store submissions. Our solution includes: User authentication via phone number, secure and smooth Product listing, browsing, and keyword search for private/business sellers Real-time in-app messaging Checkout flow supporting Google Pay & Apple Pay Responsive web app plus native or cross-compiled mobile apps, with backend/API, database, and minimal admin dashboard for managing users, listings, and messages Data sync across all clients and deployment-ready builds We provide source code, documented APIs, tested builds, and clear instructions for running the apps. We focus on reliability, performance, and seamless user experience. Preferred communication in Tamil is welcome. Best Regards, Resonite Technologies