Eshop
Enterprise E-commerce Platform with POS Integration
A full-stack e-commerce solution that seamlessly integrates with OneHubPOS, enabling merchants to launch online stores that stay perfectly synchronized with their point-of-sale system. Built with modern technologies and enterprise-grade architecture.
The Challenge
The client needed an e-commerce platform that could integrate deeply with their existing POS system. The key challenges were:
Real-Time Data Synchronization
Products, prices, inventory, and categories needed to stay in sync between the POS and e-commerce platform—automatically and reliably.
Dual User Base
Support both end customers (ordering food/products) and merchants (managing their online presence), each with different authentication and permission needs.
Multi-Store Architecture
Merchants often operate multiple locations. Each store needed its own products, orders, and settings while sharing a common management interface.
Customization Without Breaking Sync
Merchants wanted to customize product descriptions and images for their online store, but without losing the ability to sync updates from the POS.
The Solution
We built a comprehensive e-commerce platform with a sophisticated synchronization engine, flexible customization layer, and intuitive interfaces for both customers and merchants.
Multi-Store Management
Merchants can manage multiple store locations, each with its own products, orders, and settings—all from a unified dashboard.
Real-Time POS Sync
Background workers continuously sync products, categories, taxes, and modifiers from OneHubPOS. Changes in the POS reflect in the e-commerce store within minutes.
Complete Order Flow
Full shopping experience with cart management, checkout, order tracking, and automatic order push back to the POS system.
Dual Authentication
Two auth strategies—traditional email/password for customers, and magic link SSO for merchants coming from OneHubPOS portal.
Payment Gateway Integration
Integrated with NMI and Dejavoo payment gateways with a factory pattern for easy addition of new payment providers.
Role-Based Access Control
Three distinct roles—Admin, Owner (Merchant), and User (Customer)—each with tailored permissions and dashboards.
Product Customization Layer
Dual-table architecture allows merchants to customize POS product data (names, descriptions, images) without losing sync capability.
Email Notifications
Automated transactional emails for order confirmations, status updates, password resets, and email verification via SendGrid.
Architecture Deep Dive
The architecture was designed for reliability, scalability, and maintainability. Here are the key architectural decisions that made this project successful.
Dual-Table Pattern
POS data is stored in read-only reference tables (pos_stores, pos_products), while customizable e-commerce data lives in separate tables. This preserves data integrity while enabling merchant customization.
Background Worker Architecture
A separate Node.js process handles all data synchronization—scheduled syncs, merchant discovery, order pushing, and cleanup tasks. This keeps the API responsive and enables reliable async operations.
Layered Service Architecture
Clean separation between routes, controllers, and services. Business logic lives in services, making the codebase testable, maintainable, and easy to extend.
Enterprise Security
Multi-layer security with Helmet headers, CORS whitelisting, rate limiting, bcrypt password hashing, short-lived JWTs with refresh token rotation, and comprehensive input validation.
Tech Stack
We chose modern, battle-tested technologies that would enable rapid development while ensuring long-term maintainability and scalability.
Frontend
Latest React with concurrent features
End-to-end type safety
Lightning-fast build tooling
Predictable state management
Server state & caching
Utility-first styling
Accessible component primitives
Performant form handling
Backend
JavaScript runtime
Minimalist web framework
Type-safe backend code
Next-gen database toolkit
Enterprise-grade database
Secure token authentication
Runtime schema validation
High-performance logging
Infrastructure
Async job processing
Automated sync tasks
API protection
Security headers
Transactional emails
API documentation
Challenges & Solutions
Every complex project comes with unique challenges. Here's how we tackled them.
Real-time data sync without API overload
Implemented delta sync with timestamps—only fetching records modified since the last sync. Combined with configurable cron schedules per store, this reduced API calls by 80% while keeping data fresh.
Handling POS data changes without losing customizations
Designed a dual-table architecture where POS reference data stays immutable, and merchant customizations layer on top. Updates sync without overwriting custom descriptions, images, or pricing.
Seamless merchant authentication from external portal
Built magic link authentication that validates Keycloak tokens from OneHubPOS, automatically creates or updates merchant accounts, and issues our own JWT session—all in a single redirect.
Scaling background jobs reliably
Created a SyncOrchestrator that manages job scheduling, tracks execution history, handles retries with exponential backoff, and provides detailed metrics for monitoring sync health.
The Results
A production-ready platform that exceeded expectations
Rapid Development
Full MVP delivered in 6 weeks, including complex POS integration, dual auth systems, and comprehensive admin dashboards.
Scalable Architecture
Built to handle growth from day one—background workers, efficient database queries, and caching strategies ensure performance at scale.
Production-Ready Security
Enterprise-grade security with JWT rotation, rate limiting, input validation, and comprehensive audit logging.
Why This Project Succeeded
This wasn't just about writing code—it was about understanding the business problem and architecting a solution that would work today and scale tomorrow.
Deep Technical Expertise
Our team's experience with complex integrations, background processing, and enterprise architecture made the difference.
Clear Communication
Weekly demos, detailed documentation, and proactive updates kept everyone aligned throughout the project.
Future-Proof Decisions
Every architectural choice was made with scalability and maintainability in mind—no shortcuts, no tech debt.
Want Similar Results?
Whether you're building an e-commerce platform, a SaaS product, or a complex integration—we bring the same level of expertise and dedication to every project.
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Let's discuss how we can bring your vision to life with the same quality and attention to detail.
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Phone
+1 (407) 796-2376Response Time
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