Charging, parking, and the payments that kept failing

The problem

Operators needed a single view of charging and parking status across a facility, and drivers needed to pay without thinking about it. Support tickets said neither was true: sessions were hard to read at a glance, and a meaningful share of card payments failed with no useful signal.

What I built

• The charging and parking facility interface — real-time session state over Socket.IO, dense status layouts that stayed readable on a kiosk and on a phone.
• Figma specs translated into accessible, responsive components against the existing design system, WCAG 2 checked rather than assumed.
• A trace through the payment path that found the failure mode, plus retry and error handling around Stripe so a soft decline stopped looking like a dead end.

Result