Helong Zhou
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FeaturedApr 2026 — Present

FBE Cross-Border Commerce Platform

Self-built cross-border commerce: shoppers browse, checkout, and pay; merchants manage catalog and orders; the platform unifies multi-vendor, multi-country, multi-language, and multi-currency ops.

Open storefront →Demo guide
FBE Cross-Border Commerce Platform
Role
Full-stack · Architecture & Delivery
Period
Apr 2026 — Present

Highlights

  • ▹Owned architecture planning, core module design, and delivery across storefront, vendor admin, payments, and channels
  • ▹Led Shopify storefront and custom app architecture for multi-country, multi-language, multi-currency, multi-vendor expansion
  • ▹Owned catalog, cart, orders, inventory, payments, logistics, returns, and vendor settlement — tuning consistency and throughput under concurrency
  • ▹Cart concurrency: optimistic UI with rollback, debounce/coalescing/operation versioning plus server idempotency and re-validation of critical fields
  • ▹Oversell prevention: DB transactions with pessimistic locks (SELECT ... FOR UPDATE) and atomic conditional updates, optimistic lock / CAS to cut contention; reservation → payment → cancel → timeout release with idempotency keys and stock ledgers
  • ▹Load shedding & money consistency: order creation split into independent steps and offloaded to a message queue; transactions + state machines prevent duplicate orders; payment callbacks use idempotency keys, webhook dedupe, and scheduled reconciliation
  • ▹Cache and database governance: active invalidation, mutex rebuild, randomized expiry, and hot-key warmup against stampedes; index, pagination, and projection tuning to avoid full scans
  • ▹Multi-vendor settlement: order, fulfillment, and commission split per vendor with batch numbers, unique business keys, and ledger reconciliation against double payouts
  • ▹Owned production performance, third-party integrations, overseas deployment, incident triage, and CI/CD release pipelines

Capabilities

  • Storefront: browse, search, cart, checkout, orders, addresses, reviews, wishlist
  • Markets: auto region switching with multi-language pages and multi-currency pricing
  • Payments: Shopify Payments, Stripe, PayPal, and more
  • Orders & logistics: place, ship, return, and after-sales flows
  • Email: order notices, account verification, password reset, campaigns
  • Live chat: ConnectyCube for shopper–support conversations
  • Vendor admin: onboarding, catalog, order handling, payouts
  • Platform ops: commission, affiliate, channel management; marketplace + brand sites
  • Search & perf: Shopify Search / Algolia; overseas page experience tuning
  • Ops: Shopify-hosted storefront + custom app release pipelines

Stack

ShopifyOnline Store 2.0Shopify MarketsHydrogenLiquidTypeScriptTailwind CSSShopify FunctionsAdmin GraphQLStorefront APIPolarisStripePayPalAlgoliaDockerAWS

Demo portals

If the storefront redirects to a country path (e.g. /ru), that is expected regional routing — keep browsing and checkout.

Storefront (buyer)dtc.saaslab.cn →Vendor admindtc-vendor.saaslab.cn →Channel managerdtc-channel.saaslab.cn →

Test accounts

Public portfolio demo accounts only — do not use in production.

RoleEmailPasswordNotes
BuyerStorefront login, checkout, return requests
SellerFBE Store: accept, ship, handle returns
Platform / channelChannel manager: regions, channels, listing review
Channel (optional)China-region configuration demo

Core flows (try in order)

Walk buyer → vendor → returns → channel to see the full loop.

  1. 1. Buyer checkout (storefront)

    1. 1.Open storefront → sign in as buyer
    2. 2.Search / browse → add to cart
    3. 3.Checkout: address → shipping → pay
    4. 4.My Orders: confirm paid / awaiting shipment

    Multi-vendor carts split by seller; paid orders enter fulfillment queues.

  2. 2. Vendor ships (vendor admin)

    1. 1.Open vendor admin → sign in as seller@fbe.com
    2. 2.Orders → find the awaiting-shipment order
    3. 3.Create fulfillment → tracking → mark shipped
    4. 4.Buyer side should show shipped / in transit

    Stock deducts from vendor locations; fulfillment and split payment are seller-scoped.

  3. 3. Buyer return / refund

    1. 1.Buyer opens Orders / Returns and submits a request
    2. 2.Seller reviews in Requests / Return: approve or reject
    3. 3.On approve: receive return + refund (gateway or marked done)
    4. 4.Buyer sees return progress and final result

    Returns are buyer-request → seller-review — not a one-sided instant refund.

  4. 4. Channel config (optional)

    1. 1.Sign in to channel manager as admin@fbe.com
    2. 2.Inspect sales channels / region-country binding
    3. 3.Configure homepage slots & themes (storefront impact)
    4. 4.Demo listing / vendor review policies as available

    The platform turns multi-region / multi-vendor into operable commerce — not just a skin.

Architecture in one line

Buyer checks out on Shopify Storefront / Hydrogen → orders split into Vendor App → seller fulfills → buyer may request returns for seller review; Channel Manager owns Markets regions & sales channels — storefront on Online Store 2.0 / Checkout, vendor & channel capabilities via Embedded Apps + Admin GraphQL / Storefront API / Functions.