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WWWade Wongfull-stack developer
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03 / 05 · Lead developer — consumer web, merchant platform and mobile app

Where

Hong Kong local-business platform: consumer discovery, a merchant operations OS, and an iOS / Android app.

Merchant platform live with 10+ active merchants

where.com.hk (opens in a new tab)merchant.where.com.hk (opens in a new tab)App Store · soonGoogle Play · soon
merchant.where.com.hklive
Where screenshot
Where app

Problem

Where gives Hong Kong merchants one operations platform — listing, POS, ordering, online shop, payments and staff — and gives customers one place to find and buy from local shops, on the web and in the app.

What shipped

  • Omni-channel mPOS on phones and tablets, plus QR self-order with kitchen ticket printing.
  • Online shop with inventory synced to POS — SKUs, barcodes, sold-out state.
  • Payments with Stripe, payment links and QR pay; Twilio SMS notifications.
  • Multi-branch HR with JWT / RBAC roles (admin, branch, staff), QR attendance, scheduling and leave.
  • Flutter consumer app for iOS and Android: map, local shops, groups, menus, book and pay.

Surfaces

Consumer web (opens in a new tab)

Customer-facing entry point for discovering and connecting with local Hong Kong businesses.

  • Map and recommendations for local businesses

Merchant platform (opens in a new tab)

Live merchant operations OS — 10+ active merchants.

  • Map listing so shops appear on the Where map (hours, services, groups)
  • Omni-channel mPOS — a phone or tablet becomes a POS; multi-device
  • QR takeaway / self-order, kitchen ticket printing, order numbers
  • Online shop with inventory sync to POS (sold-out state, SKUs, barcodes)
  • Payment links, QR pay, multiple payment methods (Stripe)
  • Event registration and check-in
  • HR: admin / branch / staff roles, org chart, multi-branch, QR attendance, scheduling, leave
  • SMS via Twilio; JWT auth with role-based access control

Where app (iOS + Android)

Consumer mobile app for the same platform, built in Flutter.

  • Map of local shops and groups
  • Browse merchant menus
  • Book and pay in-app

Screens

merchant.where.com.hk
Where screen
merchant.where.com.hk
Where screen

Stack

  • Next.js
  • TypeScript
  • Supabase
  • Firebase
  • PostgreSQL
  • Stripe
  • Twilio
  • JWT / RBAC
  • Flutter
  • Dart