Food Delivery App Development

I'm launching a food delivery aggregator startup and need an experienced app development partner. Attached is a detailed PDF outlining the complete structure and scope of the project.

Platform requirements:
- User App: iOS and Android
- Features:
- Search and filtering options
- Order tracking
- Payment gateway integration
- Restaurant App: iOS and Android
- Features:
- Order notification
- Delivery Partner App: Android only
- Features:
- Route optimization
- GPS tracking
- Earnings tracking
- Admin Panel: Web-based dashboard

Please provide:
1. Ballpark quotation for design, development, and deployment
2. Estimated timeline for MVP and full version
3. Recommended tech stack for scalability
4. Any additional inputs or suggestions

Ideal skills and experience:
- Proven track record in developing complex, multi-platform applications
- Expertise in UI/UX design for mobile and web interfaces
- Strong knowledge of payment gateway integration and real-time tracking technologies
- Experience with scalable backend solutions

I appreciate your prompt response.