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Custom Mall • Cafe24 • Shopify • Overseas Commerce

E-Commerce Development

From fully custom shopping malls and Cafe24 tuning to Shopify Plus overseas builds — SOPHIA engineers commerce platforms that convert. Korean domestic and global markets both covered, with full payment, fulfilment, and logistics integration.

9,200+
Commerce Projects
4
Overseas Markets
20+
Payment Methods
0₩
Monthly Platform Fee
Commerce Platforms

Every Commerce Platform Covered

SOPHIA selects the optimal platform for each client based on budget, traffic projections, customisation needs, and target market — from fully proprietary to tuned SaaS.

Fully Custom Mall
100% proprietary codebase. Zero platform fees, no feature limits, complete data ownership. Best for high-volume or complex B2B/B2C requirements.
Cafe24 Custom
Korean market leader. SOPHIA handles advanced Cafe24 customisation, SmartDesign, API extension, and external system integration beyond Cafe24’s standard UI.
Shopify Plus
US, EU, Japan overseas markets. Custom Liquid themes, Shopify Functions, headless commerce builds, and multi-currency / multi-region configuration.
WooCommerce
WordPress-based commerce with full PHP customisation. Custom payment gateways, subscription billing, and Korean PG integration on WooCommerce.
Deep Dive — Custom Development

Custom Shopping Mall Architecture

Front-End Commerce
Customer-Facing Store Features
Every customer touchpoint engineered for conversion — from intelligent search and personalised recommendations to one-click checkout and abandoned cart recovery.
Storefront Features
  • Elasticsearch-powered product search with autocomplete & filters
  • AI-powered personalised product recommendations
  • Advanced product variants (colour, size, material) with live stock
  • 360° product images & video player
  • Wishlist, comparison, and save-for-later functionality
  • One-page / express checkout flow
  • Guest checkout + social login (Kakao, Naver, Google)
  • Abandoned cart email / KakaoTalk push recovery
  • Product Q&A, verified review system with photo upload
  • Core Web Vitals optimisation (LCP <2.5s target)
Back-Office Commerce
Admin & Operations System
A commerce platform is only as good as its back-office. SOPHIA builds admin systems that give operations teams full visibility and control over every order, inventory unit, and customer record.
Admin & Operations
  • Real-time order management with status workflow
  • Multi-warehouse inventory management (WMS sync)
  • Automated shipping label generation (CJ / 한진 / DHL)
  • Return & refund automation with PG reconciliation
  • Promotion engine: coupon, flash sale, bundle pricing
  • Loyalty points & membership tier system
  • 세금계산서 issuance via Hometax API
  • Sales analytics dashboard with cohort analysis
  • Supplier / vendor portal for marketplace model
  • Multi-admin with role-based access control
Specialised Commerce

Subscription & B2B Commerce

Recurring Revenue
Subscription & D2C Commerce
Subscription commerce (정기 배송) requires a specialised billing engine, churn prevention tools, and flexible plan management — all of which SOPHIA builds as custom systems, not plugin patchwork.
Subscription Features
  • Custom subscription plan builder (weekly / monthly / custom interval)
  • Recurring billing engine with Toss / KG이니시스 auto-pay
  • Skip, pause, and cancel self-service portal
  • Churn prediction & win-back automation
  • Box personalisation (member-driven product selection)
  • Free trial / first-box discount mechanics
  • Subscriber cohort analytics (LTV, churn rate, MRR)
Business-to-Business
B2B Wholesale & Trade Portal
B2B commerce has fundamentally different requirements: negotiated pricing, credit terms, bulk ordering, and multi-approver checkout workflows. SOPHIA builds dedicated B2B portals, not B2C systems with a discount code applied.
B2B Commerce Features
  • Customer-specific pricing & volume discount tiers
  • Credit limit & net payment terms (Net 30/60)
  • Purchase order upload & reference number matching
  • Multi-approver checkout workflow (buyer + finance sign-off)
  • Bulk CSV order import for large wholesale orders
  • ERP integration (SAP, Oracle, custom) via API
  • 거래명세서 / 세금계산서 auto-generation & email delivery
Global Commerce

Overseas Market Commerce Development

SOPHIA has delivered e-commerce systems for Korean brands entering China, Japan, the USA, and the EU. Each market requires a fundamentally different architecture — not just translation.

🇨🇳
China Market
  • WeChat Pay & Alipay integration
  • WeChat Mini Program commerce
  • Tmall / JD.com integration support
  • China mainland hosting (ICP)
  • Simplified Chinese UX & GB18030
  • Cross-border (保税区) logistics
🇯🇵
Japan Market
  • Paidy BNPL & Konbini payment
  • Rakuten / Amazon JP marketplace
  • Japanese postal address format
  • 消費税 (JCT) calculation & display
  • Japanese product page conventions
  • Yamato / Sagawa logistics API
🇺🇸
USA Market
  • Stripe & PayPal integration
  • Shopify Plus for US DTC brands
  • US state sales tax (TaxJar / Avalara)
  • FBA / 3PL (ShipBob, ShipHero) API
  • Amazon Seller Central sync
  • CAN-SPAM & CCPA compliance
🇪🇺
EU Market
  • Stripe SEPA & iDEAL, Klarna
  • EU VAT OSS scheme automation
  • GDPR-compliant consent management
  • EU product compliance labelling
  • DHL / DPD / GLS logistics API
  • Multi-language (DE/FR/ES/IT/NL)
Korean brand expansion overseas is not a translation project — it requires localised payment methods, regional legal compliance (tax, data, consumer rights), market-specific logistics integration, and UX patterns native to each country’s shoppers. SOPHIA has done this for all four major Korean export markets.
Technology

E-Commerce Technology Stack

Backend & Database
  • PHP 8.3 / Laravel or custom framework
  • Node.js / Next.js for API-first builds
  • MySQL / PostgreSQL (transactional)
  • Redis for session, cart, and stock caching
  • Elasticsearch for product search
  • Message queue (RabbitMQ) for order events
PHP 8Node.jsMySQLRedisElasticsearch
Front-End
  • React / Next.js (SSR for SEO)
  • Vue.js for admin SPAs
  • GSAP for micro-interaction animations
  • PWA (offline browse, push notifications)
  • Noto Sans KR + Montserrat typography system
  • Core Web Vitals-first performance budget
Next.jsReactGSAPPWA
Infrastructure & Integrations
  • AWS / Cafe24 Cloud / NCP (Naver Cloud)
  • CDN (CloudFront) for image / static delivery
  • Docker / Kubernetes for production scaling
  • KakaoTalk / SMS (Solapi) notification
  • Naver Smart Store API sync
  • CJ대한통운 / 한진 / 롯데택배 tracking API
AWSCloudFrontDockerKakaoAPISolapi

Launch Your Commerce Platform

Korean domestic, overseas, custom-built, or platform-based — SOPHIA delivers commerce systems engineered for conversion and built to scale.

Request Commerce Consultation Payment Integration