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E-commerce

eSIM 226 storefront

A travel eSIM store in eight languages with multi-currency pricing and two Taiwanese payment gateways. Paid orders are provisioned with the upstream supplier automatically and the install email goes out on its own.

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What this system does

  • Eight locales and multiple display currencies, so Japanese buyers see yen
  • Automatic provisioning across two suppliers, with failover
  • Back office for plans, pricing, orders, refunds and live GA4 traffic
  • A LINE bot that answers plan and order questions directly

Inside the product

Live screens. Fields containing customer data are masked. Tap a screenshot to see it full size.

  • Home: popular destinations, plan comparison and top-up entry points.
    Home: popular destinations, plan comparison and top-up entry points.
  • Japan destination page: 38 plans compared side by side, filtered by days and data.
    Japan destination page: 38 plans compared side by side, filtered by days and data.
  • FAQ: installation, device compatibility and refund rules, all on the site.
    FAQ: installation, device compatibility and refund rules, all on the site.
  • All destinations: an index of more than 190 countries and regions.
    All destinations: an index of more than 190 countries and regions.

More work

Cases from the same service come first.

  • eSIM back office

    Admin system

    eSIM back office

    The operations side of the same store: products, pricing, orders, refunds, suppliers and payments in one place. It actively surfaces problems like "paid but never fulfilled" instead of waiting to be asked.

    • Orders, revenue, unpaid and unfulfilled counts at a glance
    • AI pricing suggestions and bulk listing changes

    Next.js · PostgreSQL · Keycloak · GA4 Data API

    See insideE-commerce site
  • v-terminal developer platform

    Harness / internal tools

    v-terminal developer platform

    Our own browser-based platform for building and operating software: terminals, Kubernetes, Helm GitOps deploys, CI, registry and an AI coding agent in one screen. This website was shipped from zero using it.

    • Git push to self-hosted runner to Harbor to Helm sync, one pipeline
    • AI console: send a task from your phone, the agent reads the spec, edits and tests

    Next.js · Node.js · SQLite · Kubernetes client · Claude Agent SDK

    See insideHarness
  • AgentHub support and CRM

    LINE bot support

    AgentHub support and CRM

    Multi-channel AI support: LINE, a website widget and email land in one inbox. The bot answers first and hands over to a human when it cannot. Flows are drawn, not coded.

    • LINE, web widget and email in a single conversation thread
    • Drag-and-drop flow editor, so changing a flow is not a deploy

    Next.js · LINE Messaging API · PostgreSQL · Claude/Gemini

    See insideLINE bot support