End-to-End Development of a Scalable Web Platform

We are looking to build a modern, scalable digital platform that will be accessible via:

Web (Desktop & Tablet)
Mobile Applications (iOS & Android)
Desktop Application (Windows & macOS)

This platform will serve as a centralized ecosystem for users to interact, manage services, and communicate in real-time, with a strong focus on performance, security, and user experience.

We are seeking an experienced full-stack development team or individual who can handle design, development, deployment, and long-term scalability.

Core Features
1. User System
Secure authentication (Email, Google, Apple)
Role-based access (Admin, Vendor, Customer)
User dashboard with activity tracking
2. Web Platform (Admin + User Panel)
Fully responsive modern UI
Admin panel for managing users, content, analytics
Real-time notifications
Advanced search and filtering
API-driven architecture
3. Mobile Applications (iOS & Android)
Built using cross-platform framework (Flutter or React Native)
Push notifications
In-app messaging
Offline support (basic caching)
Seamless sync with web platform
4. Desktop Application
Windows & macOS support
Built with Electron or similar framework
Real-time sync with backend
Notifications and background processes
5. Communication System
Real-time chat (1-1 and group)
File/image sharing
Notification system (email + in-app + push)
6. Payment Integration
Subscription plans
One-time payments
Integration with Stripe / PayPal
Invoice generation
7. Content & Media Management
Upload and manage media (images, videos, docs)
Cloud storage integration (AWS S3 or similar)
8. Security & Performance
JWT / OAuth authentication
Data encryption
Scalable cloud infrastructure (AWS, GCP, or Azure)
CDN integration
Tech Stack (Preferred)
Frontend: React.js / Next.js
Backend: Node.js (Express or NestJS)
Mobile: Flutter or React Native
Desktop: Electron.js
Database: MongoDB / PostgreSQL
Cloud: AWS / GCP
Deliverables
Fully functional Web Application
iOS & Android Apps (published or ready for store submission)
Desktop Application (Windows & macOS)
API Documentation
Source Code
Deployment & DevOps setup
Budget & Timeline
Budget: $5,000 – $15,000 (depending on experience and proposal)
Timeline: 8 – 16 weeks
What We’re Looking For
Proven experience in full-stack development
Experience building cross-platform apps
Strong UI/UX sense
Clear communication and project management
Ability to suggest improvements and best practices
Additional Notes

We are open to long-term collaboration for maintenance and future feature expansion. Please include examples of similar projects and your recommended tech approach.