Restaurant Stock & POS Management App

I'm looking for a skilled mobile app developer to create a comprehensive application for both iOS and Android platforms. The app should include the following main functionalities:

- Stock Management: Track inventory levels, manage stock replenishment, and reduce wastage.
- Point of Sale (POS): Process transactions, manage customer orders, and generate sales reports.
- Order Management: Oversee order flow from kitchen to table, and manage order modifications.

User Roles:
- Administrator: Full access to all features and settings.
- Manager: Oversee daily operations, manage staff, and generate reports.
- Staff: Access to order management and POS for processing transactions.

Ideal Skills:
- Experience in developing mobile apps for both iOS and Android.
- Strong background in building POS and inventory management systems.
- Knowledge of user role management and access control in applications.
- UI/UX design skills to ensure a user-friendly interface.

Please provide examples of similar projects you have completed.