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# PET APP — Full-Stack Marketplace & Services Platform We are looking for an experienced **Full-Stack Developer / Development Team** to build a production-ready PET Marketplace & Services Platform for **Android, iOS and Web**. ### Template & AI-Assisted Development The mobile application UI may be based on a suitable **CodeCanyon Flutter template** selected/purchased by the client. The selected template is expected to be approximately **80% aligned with the planned PET APP user interface**, although certain additional screens, pages, components and modifications may be required to fully match the project requirements. The developer is expected to **reuse and customize the existing template wherever technically appropriate**, rather than unnecessarily rebuilding standard UI components from scratch. The project may also make use of modern AI-assisted development tools such as **Cursor and Claude** to accelerate coding, integration, debugging and documentation. **Template + AI-assisted development (Cursor + Claude) can significantly reduce repetitive development effort and implementation time.** Therefore, the developer should take advantage of these available resources to deliver the agreed scope efficiently while maintaining proper code quality, architecture, testing, security and stability. The use of templates or AI tools does **not** reduce the developer's responsibility for the final implementation. All customized code, integrations, Dynamic UI architecture, backend logic, security, testing, bug fixing and production readiness remain the developer's responsibility. ## 1. Mobile Application * Flutter / Dart * Android & iOS * Modern responsive UI * Schema-Driven / Dynamic UI Engine * Reusable Widget Registry * Offline fallback with Last Known Good Schema Cache * Versioned JSON Schema with validation and rollback ## 2. Customer Web & Admin Panel * [login to view URL] * Customer Web Application * Super Admin Panel * Role-Based Access Control (RBAC) * Manager / Accounts / Marketing / Operations roles * Category & Subcategory Management * Dynamic Fields & Form Management * User & Service Provider Management * Listings / Products / Services Management * Reports & Dashboard ## 3. Backend & Database * Python + FastAPI * REST APIs * PostgreSQL * JSONB * PostGIS * Redis * Docker / Linux VPS / Nginx * Secure and scalable architecture ## 4. Authentication & Security * Phone OTP * WhatsApp Cloud API as primary OTP provider * SMS fallback * Backend-controlled OTP generation, expiry, verification, rate limiting and retry * Authentication & Authorization * Session Management * Login / Device History * Last 3 login/device records per user * IP / Platform / Browser / Device information * Secure RBAC ## 5. Dynamic UI / Schema-Driven Architecture * Super Admin controls categories, subcategories and fields * Dynamic field types * Validation rules * Required / Optional fields * Visibility rules * Searchable / Filterable fields * Ordering * Localization-ready schema * Schema versioning * Local caching * Schema validation and rollback * No new APK required for normal category/field configuration changes ## 6. PET Marketplace & Services The platform may support: * Pet Buying & Selling * Pet Adoption * Pet Shop / Products * Pet Food & Accessories * Veterinary Doctors * Pet Hostel / Boarding * Pet Care Services * Service Provider Listings * Booking ## 7. Lead Management & Customer Interest * Customer Activity Tracking * Product / Service Views * Frequently Viewed & Recently Viewed * Favourite * Add to Cart * Enquiry * Call / WhatsApp Click * Product Sharing * Booking Started / Abandoned * Automated Lead Generation * Lead Assignment & Follow-up * Lead Lifecycle & Status * Lead Source & Conversion Tracking * Marketing Team Lead Management * Lead Notifications * Scalable Activity/Event Tracking ## 8. Lead Credits & Subscription * Subscription Packages with Lead Credits * Separate Lead Credit Packs * Subscription Credits and Purchased Credits tracked separately * Backend Lead Credit Ledger * Lead Unlocking * Credit Deduction / Refund / Expiry * Backend-controlled Lead Eligibility and Credit Usage ## 9. WhatsApp & Email Marketing * One-click WhatsApp from Lead Management * WhatsApp Cloud API integration * Product/Service information sharing * WhatsApp message status/history * One-click Email from Lead Management * Email Templates * Automated Customer Interest Emails * Add-to-Cart / Favourite / Abandoned Booking emails * Marketing consent / unsubscribe / suppression * Email delivery/bounce handling ## 10. Booking, Chat & Notifications * Service Booking * Booking Management * Real-time WebSocket Chat * Text Chat for MVP * Push Notifications * In-App Notifications * Marketing Notifications * Booking Notifications ## 11. Payments, Wallet & Subscriptions * Razorpay * Subscription Packages * Wallet * Lead Credits * Payment History * Refund handling * Backend-controlled payment/business logic ## 12. User & Service Provider Verification * User Verification * Service Provider Verification * KYC / Identity Verification * SignCare API integration * Manual Admin Review * Verification Status * Verification Audit Log * Verified User / Service Provider Badge * Re-verification / Suspension / Revocation support ## 13. Advertisement & Campaign System * Advertisement Management * Admin-managed Advertisements * Campaign Management * Banner / Product / Service Promotion * Targeted Campaigns * Campaign Start/End Date * Customer Interest-based marketing ## 14. Product & Customer Features * Product Search * Filters * Wishlist / Favourite * Recently Viewed * Frequently Viewed * Personalized Recommendations architecture * Cart * Product / Service Sharing * WhatsApp Sharing * Deep Links * Web fallback links ## 15. Media & File Management * Product Images * Service Images * User/Provider Documents * Image/File Upload * Cloud Storage integration * Secure upload/download * Media validation ## 16. Production Quality The final delivery must include: * Full API integration * Security testing * Functional testing * QA * Bug fixing * Performance optimization * Error handling * Offline/failure fallback * Production deployment * Android AAB/APK * iOS build * Customer Web * Super Admin Panel ## 17. Development Architecture The final architecture should follow: **Flutter → FastAPI → PostgreSQL / JSONB / PostGIS → Redis** with: **[login to view URL] → FastAPI** and backend integrations for: **Razorpay + WhatsApp Cloud API + KYC Provider + Email Provider + Cloud Storage** The architecture must be modular, scalable, secure and maintainable. ## 18. Development Process Before full development: 1. Pre-Development Setup & Scope Confirmation 2. Technical Architecture Approval 3. JSON Schema & Dynamic UI Architecture Approval 4. POC Demo & Acceptance 5. UI/UX Direction & Screen Flow Approval 6. Development & Module Implementation 7. Integration, Testing, QA & Bug Fixing 8. Production Deployment & Environment Setup 9. Final Builds, Source Code & Documentation Handover 10. Final Acceptance & Project Closure ## Important Requirement The developer/team must provide a **POC before full implementation** demonstrating: **Super Admin → Create Category/Fields → Backend JSON Schema → Flutter Dynamic UI → Form Submission → Backend Storage** No major change to the agreed core architecture should be made without prior approval. ## Source Code & Development Tracking * GitHub repository must be owned/controlled by the client. * Developer must work through the client's repository. * Regular commits/pushes are required. * Development progress should be traceable through Git history. * Final source code, environment configuration, API documentation and deployment documentation must be handed over. ## Post-Delivery Bug Fixing All bugs originating from the agreed project scope and delivered implementation must be fixed by the developer/team without additional development charges, subject to the agreed warranty/support period. ## Developer Requirements Please provide: * Previous Flutter projects * [login to view URL] projects * FastAPI projects * Marketplace / Service Platform experience * Dynamic UI / Schema-Driven architecture experience * GitHub / Portfolio * Estimated timeline * Fixed project cost * POC timeline/cost * Post-delivery bug-fixing/warranty terms **We are looking for a production-ready implementation, not just a UI prototype. Quality, stability, security, scalability and clean architecture are important.** The full description of the project and the PDF file are placed here with password security which will facilitate communication, and allow us to see the full details of the awardees. **Note :- ** The above 18 points provide a short overview of the complete project scope and major requirements. Detailed technical specifications, business rules, workflows, API requirements, validation rules, architecture details, and all remaining implementation details will be provided in the **complete project documentation** after the project is awarded and during the initial technical discussion with the selected developer/team.
Project ID: 40644866
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219 freelancers are bidding on average ₹14,798 INR for this job

Your key challenge here is not just building a Flutter app, but making the Schema-Driven architecture reliable: Super Admin configures categories, fields, validation and visibility, while Flutter renders those changes without requiring a new release. I would approach this by first defining the JSON Schema contract, widget registry and validation rules, then building the reusable Flutter Dynamic UI Engine around that contract. FastAPI would own business rules, permissions and marketplace workflows, with PostgreSQL/JSONB for configuration and Redis where caching or real-time features need it. I would also validate the schema/versioning flow through a POC before scaling into bookings, leads, chat, wallet, subscriptions and payments. One important point I would clarify before estimating is: which parts of each category are expected to be fully configurable through schema, and which workflows will require dedicated business logic/screens? Once that boundary is clear, I can propose the architecture, POC scope, timeline and phased implementation plan.
₹7,000 INR in 7 days
9.4
9.4

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
₹12,000 INR in 3 days
7.0
7.0

Hi I will be able to help you in your pet service app. I have done similar concept work before also. 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 Logical Soft Tech Pvt Ltd, Indore(M.P)
₹20,000 INR in 14 days
6.6
6.6

Hello Client, Greeting of the day!!!! I read your job description. I can do this job with quality product. I am always available for your support. Thanks
₹2,500 INR in 2 days
6.7
6.7

With over 17 years of experience and an expert team, I am ready to tackle your Pet Services App project using my wide range of skills, including Android development and PostgreSQL. While I understand that you are specifically looking for a Flutter + FastAPI developer, I can assure you that my experience in full-stack development will still be highly relevant and beneficial to your project. In addition to my proficiency in the technologies mentioned in your project requirements, I also offer skills in Python scrapings and automation development – skills that will come in highly useful for creating your dynamic UI architecture. My long history offers flexibility and versatility. Given this point, I'll seamlessly adapt to the role, learning any unfamiliar technologies quickly and effectively. I can assure you of a fast turnaround time without compromising on quality. To take advantage of my extensive experience in handling similar projects, do check out my portfolio/GitHub prior to making a final decision. Moreover, I'd be more than willing to engage in a POC/technical discussion before our selection process is complete so we can align what you need with what the team is offering. Together we can ensure that every aspect of your pet services app - from category and subcategory management to business logic and security - is delivered impeccably.
₹7,000 INR in 7 days
5.6
5.6

Hello I reviewed your Flutter + FastAPI Full-Stack Developer for Pet Services App project and it stood out because a pet services platform needs a smooth mobile experience backed by reliable booking, availability, user Problem Pet service applications can become difficult to manage when customer profiles, pets, service providers, availability, bookings, payments, and notifications are handled across disconnected workflows Solution I can develop the Flutter mobile application together with a FastAPI backend and REST APIs, including authentication, customer and pet profiles, service listings, provider profiles, availability, booking and scheduling, payments, notifications, reviews, and booking history I can design the database structure, implement secure API validation and role-based access, integrate maps or location services, and build an admin/provider dashboard where required I can also implement background tasks, logging, error handling, and scalable API architecture Result You will receive a reliable cross-platform pet services application with a clean Flutter interface and a scalable FastAPI backend designed for future services and user growth A few questions Will the platform support separate customer, service-provider, and admin roles? Which pet services need to be included in the first release? Do bookings require real-time availability and payment at checkout? Which payment, maps, notifications, or third-party APIs need to be integrated? Thanks
₹12,000 INR in 7 days
5.7
5.7

Hello Client, We have a experience with letter development and fast API. We will convert your figma my design to flutter mobile application Looking forward to working with you Regards, Manish
₹7,000 INR in 7 days
5.6
5.6

Hello, I can create/modify the app/web as you wish. I have 6.5+ years of experience in this field. Let's connect and discuss more about your requirements. Thank you.
₹15,000 INR in 10 days
5.2
5.2

Hello, I am a Full Stack Developer with 15 years of working experience and have expertise on the tech stack you have specified and can make a Pet Services Mobile Application along with admin panel for managing the same. I will make the app with good UI and fast loading speed so it performs well along with detailed and nice admin panel so you can manage everything from the panel itself. I can complete the work with best quality and also complete it very quickly. Looking forward to hear from you.
₹5,000 INR in 5 days
4.8
4.8

I have read your job post, I am confident in my ability to deliver a top-notch Pet Services Mobile Application that meets all your requirements. My specialty lies in creating dynamic and schema-driven UIs while using Flutter and Dart for Android and iOS development. This skillset will be pivotal in ensuring a modern, responsive interface that not only caters to the super admin's needs to manage categories, subcategories and fields on-the-go but also offers an intuitive experience to users and service providers alike. What sets me apart is my capability to create secure and scalable architectures, which will be of great value to your pet services app. My proficiency in FastAPI, PostgreSQL, Redis, Docker, Linux VPS, and Nginx will ensure a robust backend infrastructure that efficiently handles authentication, payment gateways, subscriptions, leads management, chat services, booking systems and more. My portfolio highlights experiences closely aligned with this project; for instance developing online-trading-platforms, directory listing/coupon code listing platforms and service management systems. These past projects have honed my abilities'oreal-time communication utilizing Agora & Jitsi API integration
₹7,000 INR in 7 days
4.4
4.4

Hi there, I have experience building scalable mobile and web applications using Flutter, FastAPI, PostgreSQL, and modern backend architectures. I can develop a dynamic, schema-driven pet services platform with a clean Flutter UI, robust APIs, and an admin panel that allows categories and fields to be managed without requiring app updates. I focus on clean, maintainable code, scalable architecture, and production-ready applications. I'd be happy to share my portfolio and discuss a suitable milestone plan after reviewing your requirements. Do you already have the UI/UX designs and API specifications ready, or will the architecture and screens be designed from scratch?
₹7,500 INR in 7 days
4.2
4.2

Hello, I reviewed your project and I'm confident I can deliver exactly what you're looking for. I have 13+ years of experience in web development and have successfully built and maintained websites, web applications, eCommerce stores, and custom business solutions for clients across different industries. Here's what I can offer: * Clean, modern, and responsive design * Fast-loading, SEO-friendly website * Mobile, tablet, and desktop compatibility * Secure and scalable development * Easy-to-manage admin panel (if required) * Regular progress updates throughout the project * Complete testing before delivery * Post-launch support Why choose me? * 13+ years of professional experience * Strong communication and quick response time * On-time delivery without compromising quality * Long-term support after project completion * 100% focus on client satisfaction Before starting, I'd like to discuss a few details to ensure the final solution perfectly matches your requirements. This helps avoid unnecessary revisions and ensures the project is completed efficiently. I can start immediately and dedicate my full attention to your project. Let's discuss your requirements in chat. I'm confident I can deliver a solution that exceeds your expectations. Looking forward to working with you. Best regards, Steve
₹7,000 INR in 7 days
4.0
4.0

With more than a decade of experience as a full stack developer, I am well-equipped to bring your PET Marketplace & Services Platform to life using Flutter and FastAPI. My expertise includes using modern web technologies, mobile frameworks, CMS platforms, and API integration. This makes me highly suitable for the role of your **Full-Stack Developer** or Team Lead, as I am capable of handling web, mobile, CMS, and API aspects of the project. Some of the key areas that I excel in include schema-driven architecture, dynamic UI development, authentication & security management, and efficient lead management & customer interest tracking. These competencies align perfectly with your requirements for this project and ensure that I can build a highly scalable, secure and user-friendly platform for you. Choosing me as your development partner means opting for clear and transparent communication, reliable timelines and deliveries without compromises on quality. Plus, if we decide to work together on this project I will get the best possible team by my side: experts in UI/UX design, graphics and 3D/CAD solutions which would be of great value for something as complex as this marketplace app. I'm enthusiastic about collaborating with you to create a platform that not only meets all your present needs but also paves the way for future growth!
₹7,000 INR in 7 days
4.1
4.1

I have more than 5 years of work experience in Mobile Application development and have hands-on experience in many terms like UI/UX designing, Figma Files, Firebase and Rest APIs integrations I will handle your project easily at a reasonable price, and I am available to start work from now on. Just share the details, and I will start working on it.
₹7,000 INR in 7 days
3.8
3.8

I'm so glad I came across your project as it connects with my extensive experience in the various technologies you require, particularly Flutter, FastAPI, and Next.js. My approach as a developer reflects the wider strategy of your project, placing a strong emphasis on scalability, maintainability, and efficiency. This is evident in my comprehensive portfolio of successful mobile, web, and software projects which have garnered great client satisfaction. A core strength I bring to the table is my ability to create custom digital ecosystems tailored to real business needs. Your emphasis on a dynamic UI architecture aligns perfectly with my skills. I have successfully implemented similar concepts before without compromising on security or creating unnecessary complexity through database migrations or additional APK releases. Lastly, one of the most significant advantages of choosing me is my holistic understanding of business and technology. Throughout my 10 years of experience I have learned the importance of a business-first mindset and clear communication which are indispensable for meeting your project goals . Let's put my deep technical expertise and business acumen together to create an impactful solution for your pet services app that is functional, user-friendly, scalable and secure.
₹3,000 INR in 7 days
4.5
4.5

As an experienced full-stack developer, I believe that I am the perfect fit for your pet services application. Throughout the span of my 8+ year career, I have worked on various projects of a similar nature and have a strong command over the languages and technologies you've mentioned - particularly Dart, Flutter, Python, Next.js. Be it managing pet profiles and services, like in the Pet Care App or dynamically implementing schema-driven UIs as in the Laundry App, I've done it all. What makes me an even more valuable asset for your project is not just my ability to work with these technologies but also my familiarity with scalable, high-performance software systems. It's evident from the projects you have described that your app needs to be robust and able to handle sophisticated tasks such as authentication and authorization, payment management, subscription packages etc., and my skillset will ensure a smooth implementation of these functionalities. Additionally, what I bring to the table is not just proficiency in development but also an understanding of user experience and design. My work on various client-centric applications such as food delivery apps and HRM applications has familiarized me with crafting interfaces which are both intuitive and visually appealing, something that is crucial for creating a successful pet services app. If given a chance, I’d provide you with a cost-effective, timeline-oriented service without compromising on quality or usability.
₹5,000 INR in 2 days
3.2
3.2

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
₹7,000 INR in 7 days
2.7
2.7

Hi! I’m Tarang. I have read your entire project requirements. I will give you a Pet Services App at a low cost. I have more than 12 years of experience and have done 100+ projects for designing & developing. I am very interested in this job opportunity. I am available to start immediately and can deliver high-quality work within your timeline. Please join the chat so we can discuss further and get started right away.
₹7,000 INR in 7 days
2.8
2.8

A pet marketplace on Android, iOS and web is a product, not a template polish. I will take your CodeCanyon Flutter base, keep the 80% that already fits, and wire a FastAPI backend plus the extra screens the template does not cover. I have not shipped a client native app. I build fast on Flutter and FastAPI with AI-assisted delivery, and I will prove it on your real screens, not a portfolio link. This quote is phase 1 only at your range cap: template audit, auth, and one clickable listing-to-booking flow. Not the full marketplace. Once you share the template and remaining spec, a live sample of that core flow is up in 48 hours, phase 1 in 7 days. Send the template and the screens the current UI is missing?
₹12,500 INR in 7 days
2.6
2.6

The schema‑driven UI you need can explode if the admin adds deeply nested fields without validation. I'd set up a JSONB schema parser in FastAPI that enforces type limits and caches the result for Flutter to render quickly. This keeps the mobile app responsive even as the admin creates new categories for pet adoption or boarding. A common pitfall is relying on client‑side validation only, which lets malformed data reach the database and break reports. I'll add server‑side checks in FastAPI and use PostgreSQL constraints to guard the JSONB fields, so the admin panel stays safe. Ready to start immediately and have the core API and Flutter screens wired up in the first sprint.
₹10,000 INR in 7 days
2.4
2.4

Ahmedabad, India
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Member since Jul 31, 2017
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