Booking hub

Project: Mobile & Web Application Development Project Overview: I am looking for an experienced full-stack developer or a small development team to build a cross-platform mobile application (iOS & Android) with an accompanying web-based admin dashboard. The application is a multi-sided marketplace platform connecting service providers with end-users. It will include: User authentication and profile management (individuals and businesses) Real-time service discovery, booking, and scheduling Integrated payment processing with split payments between multiple parties A rating and review system An admin dashboard for managing users, bookings, and transactions Technical Requirements: Frontend (Mobile App): Cross-platform framework: React Native (with Expo preferred) Language: TypeScript Must be fully accessible, supporting screen readers (TalkBack/VoiceOver) and WCAG accessibility semantics Offline-first capability for core features Backend: Framework: Node.js with Express.js (or similar) RESTful API or GraphQL Real-time capabilities (WebSockets or similar) for live tracking and notifications Database: PostgreSQL or MySQL Proper indexing and query optimization for scalability Payments: Stripe Connect integration for marketplace payments Support for multi-currency transactions Escrow functionality where funds are held until service completion Admin Dashboard (Web): Built with a modern framework (React, Vue, or similar) User management (approve/block/suspend) Booking and transaction monitoring Analytics and reporting dashboards Non-Functional Requirements: Scalability: The system should handle 10,000+ concurrent users and scale horizontally Security: HTTPS, JWT-based authentication, role-based access control (RBAC), data encryption at rest Performance: API response times under 500ms for 95% of requests Monitoring: Implement logging, error tracking, and performance monitoring (e.g., Sentry, Datadog) Auditability: All transactions must have traceable reference numbers and audit logs Deliverables: Fully functional mobile app (iOS & Android) with source code Web-based admin dashboard with source code Backend API with complete documentation (Swagger/OpenAPI) Database schema and migration scripts Deployment guide and CI/CD pipeline setup Testing suite (unit, integration, and end-to-end tests) Project Timeline: [Specify your timeline, e.g., 8-12 weeks] Budget: [Specify your budget range] How to Apply: Please provide: Your portfolio with similar marketplace or on-demand service applications Your proposed tech stack and why you recommend it Estimated timeline with key milestones Your hourly rate or fixed project fee Any relevant experience with accessibility features or WCAG compliance Note: Detailed feature specifications and wireframes will be provided to shortlisted candidates upon signing an NDA.