— Case Study
Project Snapshot
— Overview
Project Overview
Sonix partnered with a Japanese food retailer to design and develop a full-featured eCommerce platform built on EC-CUBE v4, enabling end-to-end online sales of food products with integrated Remise payment processing. The platform was delivered with a focus on intuitive user experience, operational efficiency for store administrators, and the reliability required for a production retail environment.
— Why Sonix
Why the Client Chose Sonix
🛒 EC-CUBE Expertise Sonix brings proven hands-on experience with EC-CUBE v4 — Japan’s leading open-source eCommerce platform — including custom plugin development, payment gateway integration, and performance tuning. | 🌐 Japan-Market Understanding With a dedicated Japanese-language delivery track and long-standing relationships with Japanese clients, Sonix bridges cultural and technical expectations — from UI conventions to documentation standards. | ⚡ Full-Cycle Delivery Capability From initial build to unit testing and ongoing maintenance, Sonix operates as a single accountable partner — eliminating the coordination overhead of multi-vendor engagements. |
— Challenge
The Challenge
The client operated a food retail business that had traditionally relied on offline or fragmented sales channels. Moving online meant more than just setting up a storefront — it required building a platform capable of handling the full commercial lifecycle: product discovery, cart management, secure payment processing, and post-purchase order tracking.
A key complexity was integrating Remise, a Japanese payment service with specific API requirements and compliance standards. Payment flows needed to be both airtight from a security standpoint and smooth from a customer experience perspective — any friction at checkout directly impacts conversion.
Simultaneously, administrators required a robust back-office system to manage inventory levels, fulfillment workflows, and store configurations without needing technical staff to intervene on routine operations.
— Approach
Our Approach
1 | Platform Architecture & EC-CUBE Configuration We began by scoping the platform architecture on EC-CUBE v4, defining the data model for products, orders, users, and inventory. Core modules were configured and extended to match the client’s catalog structure and operational workflows — ensuring the platform could scale as the product range grew. |
2 | Remise Payment Integration & Checkout Flow The team developed a custom Remise payment plugin, handling API authentication, transaction initiation, callback processing, and error handling. Checkout UX was iterated in close coordination with the client to minimize drop-off and ensure full compliance with the payment provider’s standards. |
3 | Testing, Hardening & Maintenance Handover Unit testing covered all critical paths — user authentication, order lifecycle, payment processing, and inventory updates. Following UAT sign-off, we transitioned into a structured maintenance model, ensuring the client had a responsive support channel for post-launch issues and enhancements. |
— Solution
The Solution
Sonix delivered a production-ready food eCommerce site built on EC-CUBE v4, Japan’s most widely adopted open-source eCommerce framework. The platform features a product catalogue optimised for food categories, an intuitive storefront enabling customers to search, browse, and complete purchases with minimal friction, and a fully integrated Remise payment gateway supporting secure, real-time transaction processing.
On the administrative side, the back-office was tailored to give store managers direct control over user accounts, order management, inventory levels, and configurable order fulfilment workflows — all without requiring developer involvement in day-to-day operations. The system was built on a PHP/MySQL stack managed via Backlog for issue tracking and delivery transparency, with the codebase structured to support iterative feature additions under the ongoing maintenance agreement.
— Tech Stack
Technologies Used
PHP
MySQL
Remise Payment Gateway
Backlog
HTML / CSS / JavaScript
Twig Templating
— Results
Project Results
100% End-to-end eCommerce functionality delivered on schedule, covering storefront, checkout, and back-office operations | Seamless Remise payment integration with zero critical defects post-launch, enabling secure real-time transactions from day one | Ongoing Active maintenance partnership established post-launch, with continued feature enhancements and responsive issue resolution |
— Features
Key Features
— Client Testimonial
What the Client Said
“
Before working with Sonix, getting our food products online felt like an overwhelming technical challenge — especially with the payment integration requirements specific to Japan. Once the platform went live, everything just worked: customers could browse and buy with confidence, and our team could manage orders and inventory without any technical hand-holding. The Remise integration was handled cleanly, and the few issues that came up after launch were resolved quickly. The team is reliable, communicative, and clearly knows what they’re doing. We’ve continued the partnership for ongoing improvements and have no plans to change that.
— Operations Manager, M Co., Ltd. · Japan
Sonix — Your success is our happiness.


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