Does the POS work if the internet goes down?

Yes, the system is designed to continue processing transactions offline and automatically sync data once connectivity is restored. A brief outage should never mean a stopped register.

Can the POS handle multiple store locations under one system?

Yes, multi-location support with consolidated reporting is a standard part of these builds. Each location can have its own configuration while still rolling up into one dashboard.

How is a custom POS different from products like Indian Mercado or Altus Retail?

Indian Mercado and Altus Retail are Quantum Altus products built for specific verticals, grocery and general retail respectively, and are a faster path to launch if your business fits that mold. A fully custom POS makes sense when your business has requirements those products do not cover.

Enterprise Solution

POS Systems

We build point-of-sale systems tailored to your specific business, whether that is a retail floor, a salon, a restaurant, or a service counter, connecting checkout, inventory, and reporting into one reliable platform. We have built POS platforms for our own product line, so we know what breaks under real transaction volume.

Discuss POS Systems

Who It's For

Built For Teams Like Yours

Retailers, restaurants, and service businesses whose sales process does not fit a generic POS

Multi-location businesses needing consistent checkout and reporting across every store

Businesses whose current POS system charges high fees or lacks needed features

Companies needing POS integration with existing inventory or accounting systems

Franchises and chains needing a POS platform they can extend and customize over time

The Problem

Business Problems We Solve

The current POS charges high transaction fees and licensing costs for basic features

Checkout is slow, and staff work around a clunky point-of-sale interface

Sales data does not sync automatically with inventory or accounting systems

A generic POS cannot handle the business's specific pricing, discounting, or service rules

Reporting across multiple locations requires manually combining exports from each store

What Quantum Altus Delivers

What You Get

Checkout and payment flow design specific to the business type

POS application build for terminal, tablet, or mobile hardware

Payment processor integration with card and contactless support

Inventory and sales data sync in real time

Multi-location reporting and back-office dashboard

Staff and role management with permission controls

Key Capabilities

Features & Capabilities

Fast, Reliable Checkout

Checkout flows are designed to minimize taps and wait time at the register, reducing lines during peak hours. Reliability at the point of transaction is treated as a non-negotiable requirement.

Flexible Payment Processing

The system supports card, contactless, and split payments through integrated payment processors. You are not locked into a single provider's rate structure by default.

Real-Time Inventory Sync

Every sale updates inventory automatically across the connected system, eliminating end-of-day manual reconciliation. Stock counts stay accurate throughout the business day.

Consolidated Multi-Location Reporting

Sales, staff performance, and inventory data roll up into a single dashboard across every location. There is no more manually combining spreadsheets from each store.

Staff and Role Management

Permissions, clock-in tracking, and role-based access are built into the system to match how the business actually staffs shifts. Sensitive functions like refunds and discounts are controlled by role.

Offline-Resilient Operation

The system continues processing transactions during an internet outage and syncs automatically once connectivity returns. A dropped connection never means a stopped register.

Technology

Tech Stack

ReactReact NativeNode.jsPostgreSQLStripeSquare APIAWSRedisGraphQL

Benefits

Why It Matters

Faster checkout that reduces lines and improves the customer experience

Lower long-term transaction and licensing costs than many commercial POS platforms

Real-time inventory accuracy without manual end-of-day reconciliation

Consolidated reporting across every location in one dashboard

A POS that reflects how the business actually prices and sells, not a generic template

Reliable operation even during internet outages

Delivery Approach

How We Deliver This

Discovery

Map the checkout, pricing, and service workflow for the business

Design

Design the checkout UI and back-office reporting structure

Build

Develop the POS application and payment processor integration

Test

Run transaction testing including offline and edge-case scenarios

Launch

Deploy to terminals with staff training and a phased store rollout

Support

Provide ongoing support and feature updates as the business grows

FAQ

POS Systems — FAQ

In most cases yes, we can integrate with commonly used payment processors, and we will confirm compatibility with your specific provider during discovery. If your current processor is not a good fit, we can recommend alternatives that better suit the business.

Explore More

Related Services & Products

Inventory Management Systems

Custom inventory and warehouse management systems that give real-time stock visibility across every location.

ERP Development

Custom ERP systems that unify finance, operations, inventory, and reporting into one platform built around your business.

Custom Software Development

Bespoke applications engineered around your exact processes, not the constraints of a packaged product.

Mobile App Development

Native and cross-platform mobile apps for iOS and Android built for performance, adoption, and long-term maintainability.

Indian Mercado (Product)

The point of sale built for the way Indian grocers actually work

Altus Retail (Product)

Run your shop, not your spreadsheets

Ready to talk about pos systems?

Tell us about your project and we'll get back to you within one business day.