Cafe Billing System Development

I need a comprehensive billing system for my new cafe. The system should be able to generate invoices, track inventory, and manage customer data.

Essential Features:
- Payment Processing: Should support credit/debit cards, cash, and mobile payments.
- Reporting: Generate sales reports and customer reports.

Ideal Skills and Experience:
- Experience in developing billing/invoicing systems.
- Familiarity with inventory management systems.
- Knowledge of payment processing integration.
- Strong reporting and data analytics skills.

Please provide samples of previous work.