Point of Sale System — Zeo Pos

The Challenge

The store owner came to us with a familiar but painful problem: checkout queues kept growing during peak hours because the legacy POS was slow to process barcodes and would freeze every time the receipt printer was triggered. Stock was reconciled manually at the end of each day, which led to recurring inventory discrepancies, and sales reports only became available the following morning — meaning every promotion or restock decision was always one day behind.

On top of that, onboarding a new cashier took days because the old interface buried frequently used actions under deeply nested menus. The team needed a POS that was fast, easy enough for new staff to learn in hours, and gave the owner real-time visibility into sales — all without forcing them to buy new hardware.

Our Solution

We rebuilt Zeo Pos as a modern web application with Vite.js + TypeScript + Tailwind CSS that runs comfortably on the laptops already at the counter. The core flow is keyboard-first: every barcode scan triggers a non-blocking stock check against Firestore, and receipt printing is handed off to a background worker so the cashier can start the next transaction immediately.

The backend runs on Firebase + Cloud Functions, which means stock synchronisation and report aggregation happen automatically whenever a transaction is committed. The owner sees a live dashboard with daily sales, per-category trends, and a low-stock watchlist. A clean role-based access model keeps the cashier, supervisor, and owner views focused on what each role actually needs — so onboarding a new cashier now takes a few hours, not days.