Multi-Tenant Restaurant POS System with Android & Laravel
Enterprise-grade restaurant management platform with native Android POS application and Laravel multi-tenant backend. Comprehensive solution featuring table management, kitchen printer integration, offline capabilities, Tyro EFTPOS payment processing, role-based access control, and real-time inventory tracking serving multiple restaurant locations across Australia.
Project Summary
Architected and developed a comprehensive multi-tenant restaurant POS ecosystem combining native Android tablet application with Laravel backend infrastructure. The platform serves multiple restaurant locations with features including table management, kitchen printer integration, barcode scanning, offline operation mode, Tyro EFTPOS certification-compliant payment processing, advanced modifier handling, role-based permissions, and real-time inventory synchronization across branches.
About the Project
SSR Tech's restaurant POS platform serves hospitality businesses across Australia, from quick-service restaurants to full-service dining establishments. The system needed to handle high-volume order processing during peak hours while maintaining reliability even when internet connectivity fails.
The platform required sophisticated table management for dine-in operations, seamless kitchen communication through integrated printers, complex modifier handling for customizable menu items, split payment processing with Tyro EFTPOS integration, and comprehensive reporting for multiple branches—all while ensuring the Android application could function independently during network outages.
The Challenge
Build a mission-critical restaurant POS system that handles complex table management, maintains operation during connectivity loss, integrates with kitchen printers and Tyro payment terminals, manages multi-branch inventory, and supports role-based access—all on Android tablets.
Complex Table Operations
Managing table orders, moves, splits, consolidation, and separate billing across multiple dining areas with real-time kitchen coordination and proper void item handling.
Offline Reliability
System must continue accepting orders, processing payments, and printing receipts during internet outages, then sync seamlessly when connectivity returns.
Payment Integration Complexity
Full Tyro EFTPOS certification compliance including purchase, refund, split payment, surcharge handling, receipt printing, and error recovery workflows.
Multi-Branch Coordination
Real-time inventory synchronization across locations, centralized reporting, branch-specific configurations, and tenant isolation in shared infrastructure.
Solution Implementation
Native Android POS Application
Built responsive tablet UI with table layout management, cart operations, modifier handling, barcode scanning, offline data persistence, and local SQLite database for uninterrupted service.
Laravel Multi-Tenant Backend
Developed RESTful API with tenant isolation, branch management, inventory tracking, Z-report generation, user role management, and synchronization endpoints for offline data reconciliation.
Tyro Payment Ecosystem Integration
Implemented complete Tyro certification requirements including WebView integration, split payments, refund workflows, surcharge calculation, receipt printing, transaction logging, and error handling.
Kitchen & Printer Integration
Configured thermal and kitchen printer communication with consolidation printing, USB/network printer support, custom receipt formatting, and void item docket generation.
Technical Implementation
Android Application
- • Native Kotlin development
- • SQLite offline database
- • Custom UI components
- • Barcode scanner integration
- • Printer SDK implementation
Laravel Backend
- • RESTful API architecture
- • Multi-tenant database design
- • Eloquent ORM relationships
- • API token authentication
- • Real-time data sync endpoints
Table Management
- • Dynamic table layout grid
- • Table move and merge operations
- • Split billing functionality
- • Order consolidation logic
- • Table status tracking
Order Processing
- • Complex modifier management
- • Quantity-based modifier pricing
- • Item void with audit trail
- • Discount application logic
- • Cash rounding calculation
Tyro Integration
- • WebView payment interface
- • Split payment processing
- • Refund with cancellation
- • Surcharge handling
- • Certification compliance
Printing System
- • Kitchen docket printing
- • Receipt thermal printing
- • Consolidation print logic
- • USB and network printers
- • Custom format templates
Offline Capabilities
- • Local SQLite database
- • Offline login authentication
- • Z-report file export
- • Sync queue management
- • Conflict resolution logic
User Management
- • Role-based access control
- • Account switching dialog
- • Permission-based features
- • Password verification prompts
- • Multi-user cart logging
Reporting & Analytics
- • X and Z report generation
- • Stock inventory tracking
- • User-specific reporting
- • Transaction audit trails
- • Multi-branch consolidation
Key Features Delivered
Table Management
- • Dynamic table layout configuration
- • Table move and merge operations
- • Split billing across multiple payments
- • Order consolidation for kitchen efficiency
- • Table status real-time updates
Advanced Order Management
- • Quantity-based modifier pricing
- • Modifier removal and adjustment
- • Item void with kitchen notification
- • Discount functionality (% and $)
- • Cash rounding with receipt display
Payment Processing
- • Tyro EFTPOS certified integration
- • Split payment with outstanding balance
- • Refund and cancellation workflows
- • Surcharge calculation and display
- • Transaction receipt printing
Offline Operations
- • Offline login authentication
- • Local data persistence
- • Z-report file export
- • Automatic sync when online
- • Conflict resolution handling
Printing Integration
- • Kitchen docket printing
- • Consolidation print logic
- • USB thermal printer support
- • Receipt formatting with logos
- • Void item kitchen notifications
User & Permissions
- • Role-based access control
- • Account switching functionality
- • Permission verification dialogs
- • Multi-user transaction logging
- • User-specific reporting
Inventory Management
- • Real-time stock tracking
- • Multi-branch inventory sync
- • Initial stock and Z-report updates
- • Price level management
- • Barcode scanning integration
Multi-Tenant Architecture
- • Tenant-isolated data contexts
- • Branch-specific configurations
- • Terminal options management
- • Centralized reporting dashboard
- • Cross-branch data aggregation
Results & Outcomes
Production-Ready Restaurant POS
Full deploymentDeployed complete multi-tenant POS system serving multiple restaurant locations with table management, kitchen integration, and Tyro certification-compliant payment processing.
Zero-Downtime Offline Mode
100% uptimeImplemented robust offline capabilities ensuring restaurants continue operations during connectivity issues with automatic synchronization and Z-report file export when back online.
Tyro Payment Certification
CertifiedAchieved full Tyro EFTPOS certification compliance including split payments, refunds with cancellation, surcharge handling, receipt printing, and comprehensive error recovery workflows.
Enhanced Staff Management
RBAC implementedDelivered role-based access control with account switching, permission verification, and multi-user transaction logging ensuring proper authorization and complete audit trails.
Seamless Kitchen Integration
Real-time printingIntegrated USB and network printer support with consolidation logic, void item notifications, and custom formatting ensuring efficient kitchen operations and order accuracy.
Real-Time Inventory Tracking
Multi-branch syncImplemented cross-branch inventory synchronization with stock tracking, Z-report updates, price level management, and barcode scanning for accurate inventory control.
Technical Challenges Overcome
Complex Modifier Logic
Modifiers required quantity-based pricing calculations, removal functionality, and proper total price updates across cart, receipt, and kitchen dockets while handling nested modifier arrays from the API.
Table Management Complexity
Table operations including moves, merges, split billing, and separate payments required coordinated updates across UI, database, and kitchen printers while handling void items and ensuring proper table numbering on dockets.
Offline Data Synchronization
System needed to operate completely offline including login authentication, Z-report generation, and transaction recording, then sync reliably when connectivity returned without data loss or conflicts.
Tyro Certification Requirements
Tyro certification workbook contained 100+ test cases covering purchase flows, refund scenarios, split payments, surcharges, receipt printing, cancellation handling, and error recovery that all needed to pass.
Role-Based Access Control
Different user roles required varying levels of access to features like price levels, no-sale buttons, refunds, reports, and configuration—all needing password verification dialogs for unauthorized actions.
Multi-Branch Inventory Sync
Inventory quantities needed real-time tracking across multiple branches with different price levels, stock updates from Z-reports, consolidation handling affecting quantities, and barcode-based lookups.
Implementation Highlights
Key Deliverables
Technology Stack Details
Android Application Stack
Modern Android development language with null safety
Broad device compatibility for tablets and terminals
Local data persistence for offline operations
HTTP client for API communication
USB and network thermal printer integration
Backend Services Stack
PHP framework for robust API development
Database abstraction with relationships
Relational database with multi-tenant schema
API token authentication system
Background job processing for sync operations
Payment Integration Stack
Australian EFTPOS payment gateway integration
Secure payment interface within Android app
Communication between WebView and native Android
Encrypted storage for API keys and credentials
Complete audit trail for payment compliance
Hardware Integration
Direct thermal printer communication
IP-based kitchen printer integration
Hardware and software scanning integration
Standard printer command protocol
Template-based receipt and docket generation
Business Impact
Restaurants continue serving customers during internet outages with offline mode and automatic synchronization
Single platform serving multiple restaurant branches with centralized management and branch-specific configurations
Full Tyro EFTPOS certification meeting Australian payment standards with comprehensive audit trails
Immediate order transmission to kitchen with consolidation logic improving efficiency and reducing errors
Role-based permissions with audit logging ensuring proper authorization and complete transaction accountability
Cross-branch inventory synchronization with real-time stock tracking and automatic Z-report updates
Development Highlights
Iterative Development Process
- Hybrid work model with on-site and remote collaboration ensuring continuous progress
- Incremental feature delivery with immediate testing and client feedback integration
- Comprehensive debugging sessions resolving complex payment and table management issues
- Systematic Tyro certification workbook completion with detailed test case validation
Quality Assurance Approach
- Extensive testing across multiple Android devices and tablet configurations
- Real restaurant environment testing during peak hours to validate performance
- Offline mode stress testing ensuring data integrity during connectivity interruptions
- Print testing across various thermal printer models and kitchen printer configurations
Feature Evolution Timeline
Foundation & Core POS Features
Basic POS functionality, table layout design, cart operations, server configuration, and initial printer integration establishing the fundamental platform
Payment Integration & Certification
Complete Tyro EFTPOS integration including purchase, refund, split payment, surcharge handling, and systematic completion of 100+ certification test cases
Advanced Features & Optimization
Modifier quantity management, discount functionality, cash rounding, barcode scanning, and comprehensive table operations including moves, merges, and split billing
Offline Mode & Synchronization
Offline login, Z-report file export, Laravel sync endpoints, and robust data reconciliation ensuring uninterrupted restaurant operations
Security & Multi-Branch Management
Role-based access control, account switching, permission management, multi-branch inventory synchronization, and comprehensive audit logging for compliance
Need a Custom Restaurant POS Solution?
Whether you need a complete hospitality POS system, payment gateway integration, multi-tenant architecture, or offline-capable mobile applications, let's build a solution tailored to your restaurant's unique workflow and operational requirements.
