Voucher Redemption API Integration

I need a Python-based REST service running on a Hetzner cloud server that lets our self-service cash kiosks issue and redeem vouchers quickly and securely. The kiosk will show customers a QR or barcode... (Budget: €750 - €1500 EUR, Jobs: API Development, Docker, FastAPI, MySQL, PHP, PostgreSQL, Python, REST API, Software Architecture)