The challenge
Payment terminals from different vendors need one reliable layer that connects them to the cloud and to several payment providers.
What we built
An Android background service with AWS IoT fleet provisioning and MQTT messaging, adapters for Wallee, Positive and Switchio, and a Compose-based on-terminal display — plus SDK integrations for PAX NeptuneLite, Feitian F20 with Nayax, and TCS devices.