MobiKart – Vollständiges Kartbahn-Buchungssystem

This is a bespoke end-to-end booking system for the go-kart track run by MobiKart Funracing GmbH in Berlin. SW Business Solutions built the entire system from the ground up — from the NestJS REST API through a full admin dashboard to the public booking website.

The core system

The system fully automates the management of driving slots for both tracks at the Berlin site, along with booking packages, guests and payments. Real-time availability is pushed over Socket.io WebSockets, so several concurrent bookings are coordinated correctly.

What makes it different

• Hold system: reservations are held temporarily so that overbooking cannot occur
• Slot generation: driving slots are generated automatically from opening hours and ad-hoc windows
• TSE/KassenSichV: fiscal compliance under German cash register law
• Scanner integration (planned): ESP32 / Raspberry Pi scanners for QR code check-in at the track

A fully bespoke booking system had to be built from scratch — one that:

• coordinates real-time availability correctly (no overbooking)
• models complex package and pricing logic
• complies with TSE/KassenSichV, the German cash register security regulation
• integrates IoT scanners for check-in
• doubles as a POS till system

SW Business Solutions built a modular full-stack system:

Backend (NestJS):

• REST API with a BullMQ job queue for reliable background processing
• Socket.io for real-time availability updates
• A hold system that prevents overbooking
• Automatic slot generation from opening hours
• Stripe and PayPal payment integration
• Fiskaly TSE integration

Admin dashboard (Next.js):

• Complete booking management
• POS till system with TSE connection
• Real-time crew view
• Slot generation and management

Booking website (Next.js):

• Intuitive date and package selection
• Live availability display
• Secure checkout with Stripe/PayPal