Food Delivery App Call Notification Integration

I'm looking for a developer who can integrate an automated call notification system into both the mobile and web versions of my food delivery app.

Key Requirements:
- The system should trigger notifications for new customer orders, order status changes, and driver assignments.
- Call notifications should reach the restaurant & driver if not received under timeline.

Ideal Skills:
- Proficient in mobile and web app development
- Experience with integrating automated notification systems
- Understanding of food delivery app requirements

Please only bid if you have relevant experience.