Quray turns hand movement into MIDI and CV, but the playing surface is invisible and the device makes no sound on its own. My job is to make the configurator and the physical instrument behave like the same product.

I designed the system from wristband registration to dual-screen POS. Staff had almost no training; guests barely looked at the screen. Every order appeared live before the wristband was charged, and the bar kept selling when Wi-Fi dropped.

As the sole product designer, I redesigned the ecosystem across customer products, operator tools, logistics and the driver app. The same team could handle more orders, with 70% fewer delivery errors.

Employee training lived in manuals and classroom sessions. Opening a restaurant meant PDFs, emails and repeated calls to HQ. I turned both into step-by-step digital products for people doing it for the first time.

New fiscal rules pushed thousands of businesses from button-based registers to unfamiliar touchscreens almost overnight. I defined the interaction model from scratch and tested it in real stores. Many of the same flows are still running years later.