MASA — Enterprise Multi-Branch Restaurant Platform & Touch POS

Production-grade multi-branch restaurant operating system built with Next.js 15, TypeScript, and MySQL. Features touch POS, real-time KDS, BOM recipe inventory deduction, and shift management.

Role

Lead Software Architect & Full-Stack Developer

Client / Scope

MASA (masa-qr.site)

Project Year

2024

Live Endpoints

Visit ProductionPrivate Codebase

MASA — Enterprise Multi-Branch Restaurant Platform & Touch POS

Project Executive Summary

MASA is a comprehensive digital operating system and multi-branch management platform built for modern food and beverage enterprises. Built on Next.js 15 App Router, React 19, and Prisma ORM, MASA combines online QR guest ordering, a touch-optimized cashier POS, a real-time Kitchen Display System (KDS), and automated Bill of Materials (BOM) recipe-level ingredient stock deductions.

The Business Problem

Modern restaurants face fragmented systems: expensive 3rd-party POS subscriptions, high aggregator commissions (up to 30%), uncoordinated kitchen tickets, and inaccurate inventory tracking leading to food waste and cash variances.

Architecture & Engineering Solution

Architected around Domain-Driven Design (DDD) with strict separation of Domain, Application, and Infrastructure layers. Implemented atomic database operations with SELECT FOR UPDATE locks, an immutable integer Money Value Object, and an event-assisted real-time Kitchen Display System (KDS).

System Architecture & Data Flow

High-level sequence pipeline mapping store events to business operations:

1Guest QR Menu / Phone Ordering Interface

MASA — Enterprise Multi-Branch Restaurant Platform & Touch POS

Project Executive Summary

The Business Problem

Architecture & Engineering Solution

System Architecture & Data Flow

Key Engineering Features

Engineering Challenges & Mitigation

Measurable Business Outcomes

Technologies & Tools

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