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I’m planning a full-feature classifieds platform—web and mobile—modeled after Milanuncios or MercadoLibre. Core modules include dynamic ad publishing with unlimited categories and sub-categories; an advanced search that lets users filter by price range, location, and category and view results on an interactive map; real-time buyer–seller chat; plus a user rating/reputation engine. On the commerce side I need a shopping cart, international payment-gateway checkout, and workflow for orders, shipping, and returns. The back-office must let Administrators, Moderators, and Customer support staff manage users, ads, and editorial content from a single dashboard. Preferred stack: Java for the backend (Spring Boot or similar) and Flutter for the iOS/Android apps, but I’m happy to hear strong alternatives. Please include: • Estimated cost and timeline • Technologies you propose and why • Links or store listings for any comparable marketplaces you’ve built I’m available for questions at any stage and will reply promptly so we can refine scope, milestones, and acceptance criteria together.
Project ID: 40505234
196 proposals
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196 freelancers are bidding on average €369 EUR for this job

Hello, Hope you are doing well. With our 10+ years of experience in building large-scale marketplace and classifieds platforms, we are confident that we can develop your web and mobile solution with advanced listings, map-based search, real-time chat, secure payments, and a scalable admin system with proper role management and performance optimization. Looking forward to hearing from you. Best Regards, Shweta
€400 EUR in 7 days
9.9
9.9

Hi, I've built classified marketplaces like this before—full stack, web and mobile both. You mentioned Milanuncios as your model, which tells me you want a solid, proven feature set rather than something experimental. We handle the whole stack: PHP/Java backend, Flutter mobile, API architecture. I've delivered 1500+ web and mobile projects over 14+ years — happy to share relevant examples. Let's talk scope and timeline. Send over any docs you have. Thanks, Hasan
€200 EUR in 21 days
8.7
8.7

Hi there, I will build your classifieds marketplace — ad publishing with nested categories, map-based search, real-time chat, and rating engine — using Spring Boot and Flutter. For the interactive map, I will integrate location indexing so filter queries return geo-bounded results without slowing down as listings scale. Questions: 1) Which payment gateways do you need for international checkout? 2) How many user roles beyond Admin, Moderator, and Support? This bid is an initial estimate — I will confirm the final cost and timeline once we have walked through the complete requirements together. Looking forward to discussing further. Best regards, Kamran
€34 EUR in 10 days
8.6
8.6

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.
€225 EUR in 10 days
8.5
8.5

Hi, I can build a high-performance system that allows users to post ads, search intelligently, interact in real time, and complete transactions smoothly. I will deliver: • Scalable backend (Spring Boot or similar) with secure APIs and multi-role admin system • Cross-platform mobile apps (Flutter) with full feature parity for iOS and Android • Advanced search with filters, location-based results, and interactive map integration • Real-time chat system and user rating/reputation engine • Complete commerce flow including cart, payments, orders, shipping, and returns The platform will be designed for scalability, performance, and future growth, ensuring a smooth experience for both buyers and sellers. I have experience building marketplace and data-driven platforms with strong focus on architecture, UX, and performance. Here You Can Check My Professional Portfolio: https://www.freelancer.com/u/Hammadhassan21 Let's connect with me chat to discuss more about your project. Best Regards Hammad.
€250 EUR in 20 days
7.9
7.9

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your marketplace project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham
€125 EUR in 12 days
8.0
8.0

Estimated cost and timeline: Based on the scope of your project, I estimate the cost and timeline to be $X and X weeks, respectively. However, costs may vary depending on the final specifications we establish. I believe open communication is key in determining a realistic plan. Comparable Marketplaces: While I haven't built a marketplace exactly like Milanuncios or MercadoLibre, during my career I've successfully developed several complex full-stack web applications with similar features including shopping carts, online payments through major gateways like Paypal, Stripe etc., location-based searches with interactive maps, chat functionalities plus user rating systems. In conclusion
€140 EUR in 2 days
7.8
7.8

Hi I can build a full-feature classifieds and marketplace platform for web and mobile using Java Spring Boot, Flutter, PostgreSQL, real-time chat, payment integration, and scalable admin controls. The main technical challenge is combining classifieds, e-commerce checkout, map search, buyer-seller messaging, reputation, moderation, and order workflows without creating a heavy or unstable system. My solution would be to design a modular backend where ads, categories, users, chat, payments, shipping, returns, ratings, and admin permissions are separated through clean APIs. For the mobile apps, Flutter would allow one shared codebase for iOS and Android while keeping the marketplace experience fast and consistent. I can implement unlimited categories and subcategories, advanced filters, location-based search, interactive map results, secure checkout, cart flow, order tracking, and return handling. The admin dashboard can include role-based access for Administrators, Moderators, and Support staff to manage users, ads, reports, content, and disputes. The final platform would be structured for long-term growth, international payments, marketplace trust, and smooth buyer-seller communication. Thanks, Hercules
€140 EUR in 7 days
7.4
7.4

Hi, I've built scalable marketplace platforms with architecture closely matching your requirements and can deliver this end-to-end with confidence. My proposed stack is Laravel for a robust REST API backend, Flutter for cross-platform iOS/Android apps, Elasticsearch for advanced geo-filtered search, Firebase for real-time chat, and Stripe/PayPal for seamless international payments. I can phase delivery across clear milestones — ad publishing & search → commerce & payments → back-office dashboard — with defined acceptance criteria at each stage. I'm available immediately to discuss scope, share relevant portfolio work, and align on a timeline that works for you.
€140 EUR in 7 days
7.2
7.2

I can develop a scalable classifieds and marketplace platform similar to Milanuncios or MercadoLibre, featuring web, Android, and iOS applications with advanced ad management, real-time communication, integrated e-commerce functionality, and a powerful administration system. I recommend Flutter for Web, Android, and iOS along with Spring Boot, PostgreSQL, Redis, Elasticsearch, and cloud infrastructure such as AWS or Google Cloud. This architecture provides excellent scalability, fast search performance, real-time messaging capabilities, secure payment processing, and long-term maintainability while keeping frontend development efficient through a single codebase. The platform will include unlimited categories and subcategories, dynamic ad publishing, advanced search with map-based results, buyer-seller chat, user ratings and reputation management, shopping cart functionality, international payment gateway integration, order management, shipping and return workflows, and a comprehensive admin panel for managing users, listings, content, moderation, support operations, and platform analytics. The final solution will be delivered with complete source code, API documentation, deployment instructions, scalable cloud architecture, and support for future enhancements such as promoted listings, subscription plans, AI-powered recommendations, and multilingual expansion.
€240 EUR in 7 days
7.2
7.2

Hello Big classifieds platform. You need build. Hung: full-stack dev, 5+ years. Build platforms. Build yours fast. Show me spec. Start build. Giáp Văn Hưng
€250 EUR in 7 days
6.8
6.8

Your requirement for real-time buyer-seller chat alongside a full order and returns workflow tells me this needs a carefully layered backend from day one. - Backend: Spring Boot REST API with PostGIS for location-based search and map results, WebSocket (STOMP) for real-time chat, and Spring Security with JWT covering the Admin, Moderator, and Support role tiers. - Mobile: Flutter for a single iOS/Android codebase consuming the same API; Google Maps SDK for the interactive map; Firebase for push notifications. - Commerce: Stripe or an equivalent international gateway for checkout, a state machine managing order/shipping/returns transitions, and a back-office dashboard that consolidates user, ad, and content management across all three staff roles. Delivery in exactly 7 days; the amount covers the scope as written, and we will refine the figure once we walk through module priorities, milestones, and acceptance criteria that still need definition. I can share relevant portfolio items and go over open points in a quick 15-minute call.
€250 EUR in 7 days
7.0
7.0

You're not really building a classifieds website here—you’re building a marketplace ecosystem with a lot of moving parts that need to work together without becoming difficult to manage as the platform grows. My first focus would be the foundation: a flexible category system, scalable listing architecture, location-based search, and permissions for Admins, Moderators, and Support teams. Once that core is solid, I’d build the transactional layer around it—real-time messaging, reputation scoring, cart and checkout flow, order management, shipping, and returns. For a project of this size, I’d lean toward Spring Boot for the backend and Flutter for mobile. It keeps the architecture clean, performs well under growth, and allows features like map-based discovery, chat, and advanced filtering to evolve without major rewrites later. One thing I’d pay close attention to is keeping search fast even with large numbers of listings, while making moderation tools efficient enough that managing the platform never becomes a bottleneck. I have a few architecture ideas that could simplify future scaling and feature additions. Happy to discuss those and refine the scope together.
€150 EUR in 3 days
6.9
6.9

Hello! I am lad to say that i have already developed an Classifieds Marketplace Platform similar to Milanuncios or MercadoLibre, covering both web and mobile applications. The goal is to create a high performance marketplace where users can publish listings, search and filter ads efficiently, communicate in real time, and complete transactions securely through an integrated checkout and order management system. My focus will be on developing a scalable classifieds architecture with dynamic ad publishing, unlimited categories and subcategories, advanced search with filters and map based discovery, real time chat between buyers and sellers, and a reputation system to build trust between users. The admin panel will include role based access for administrators, moderators, and support staff to manage users, listings, and content efficiently from a centralized dashboard. I specialize in building large scale marketplace platforms with real time systems, multi role architectures, and strong focus on performance, scalability, and clean user experience across web and mobile applications. Let’s connect to understand your target regions, payment gateways, and moderation rules so we can design the right marketplace structure and user flow from day one. Best regards, Nikita Gupta.
€300 EUR in 28 days
6.9
6.9

Dear Hiring Manager, Thank you for sharing the project details. I understand that you are looking for a modern, professional, and adaptable solution that performs seamlessly platforms and is delivered in all the required formats to support long-term scalability and maintenance. I am confident that my experience and attention to detail will allow me to deliver a high-quality solution that meets your expectations. I prioritize clear communication, timely delivery, and a collaborative approach throughout the project lifecycle. I'd be happy to discuss your needs further and answer any questions you may have. Please feel free to contact me via messaging, and we can find the best way to achieve your project goals. I look forward to hearing from you. Best regards, Jitendra
€250 EUR in 5 days
6.9
6.9

Hello! With more than 13 years of prolific experience in Python and Full-Stack development, my proficiency is well-demonstrated across industries, and I'm confident it aligns perfectly with your project's requirements. I bring not only a solid background in Java for the backend and Flutter for mobile development, but also an appreciation for alternatives that deliver optimal results. Specifically, I've built customized Python Web Automation and Mobile apps like the Car Rental Website Development,AI-Bot installation on MacOS/ Windows and more similar to what you're seeking. My expertise with scalable Flask web framework combined with beautifulSoup as the scraping tool will facilitate seamless data extraction from web platforms as needed. Considering the Hawthorne effect of decision-making, I am willing to share with you some listings of my notable marketplaces which will vouch for my competency in meeting your project requirements. Overall, my broad-ranging skill set involving Python, Flutter, Java and Web3 paired with an extensive technical toolbox make me uniquely qualified for your project! For the estimated timeline and costs, let's have a conversation about refining scope, milestones, and criteria that will meet your specific business needs.
€40 EUR in 1 day
6.6
6.6

Hello, I will develop your CLASSFIED MARKETPLACE MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
€120 EUR in 15 days
6.6
6.6

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
€400 EUR in 15 days
6.6
6.6

Hello There!!! ★★★★ ( Scalable classifieds marketplace with ads, payments, chat and admin ecosystem ) ★★★★ Project understanding: I understand you need a full classifieds marketplace similar to Milanuncios or MercadoLibre with web and mobile apps, including ad posting, advanced search with maps, real-time chat, user ratings, payments, order management, and a powerful admin dashboard for full platform control. ⚜ Multi-category classifieds system ⚜ Advanced search with map integration ⚜ Real-time buyer–seller chat ⚜ Ratings & reputation engine ⚜ Cart, checkout & payment gateway ⚜ Order, shipping & returns workflow ⚜ Admin/moderator management panel I have experience building marketplace platforms, eCommerce systems, and real-time applications using Java Spring Boot, Flutter, and scalable API architectures. I focus on performance, clean UX, and systems that can grow with large user bases. My approach is to design a modular backend for listings, chat, and payments first, then build Flutter apps for iOS/Android, followed by admin tools and search optimization with map-based filtering. I’d be happy to discuss cost, timeline, and architecture choices in detail. Warm Regards, Farhin B.
€110 EUR in 10 days
6.8
6.8

As an experienced Full Stack Developer with a specialization in PHP, Laravel, React JS, and Flutter, I believe I have the perfect skill set to build your classifieds marketplace. Throughout my 6+ years in this field, I have consistently created scalable, high-performance web and mobile applications that add genuine value to businesses. Your preferred stack of Java for the backend (Spring Boot or similar) and Flutter for the iOS/Android apps aligns perfectly with my expertise. I propose using these technologies for their reliability, extensibility, and the ability to create a seamless user experience like no other. Moreover, my proficiency in setting up and deploying shared, VPS & Dedicated Servers will be vital in ensuring smooth operations on an ongoing basis. To further solidify my suitability for this project, I encourage you to check out a few examples of marketplaces that I have built. You'll see firsthand how my clean, well-documented code leads to qu+ick response times and regular progress updates. As an additional advantage, I promise reliable post-launch support and maintenance to ensure maximum efficiency for your platform even after completion. So let's make this happen!
€30 EUR in 1 day
6.1
6.1

Valencia, Spain
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Member since Jun 10, 2026
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