Selling a used phone, hiring a freelancer, renting out a room, and booking a gig usually means four or five different apps, four logins, and four different ways to pay. Each platform owns its own trust layer, its own messaging, its own dispute process, and its own idea of what a listing even is. People bounce between tools, copy the same bio and photos into each one, and give up before the deal closes.

Cross border peer to peer commerce makes this worse. A seller in one country and a buyer in another have no shared escrow, no shared shipping label, and no shared language. Trust ends up being decided by who blinks first in a chat window, and the platforms that should help stay out of the way.

myTerrace wanted one home for all of it. Six verticals under one roof, one inbox for every conversation, and a payment layer that holds funds in escrow until both sides are happy. That meant collapsing six very different mental models into a single hub based navigation without losing what made each one feel natural to its own users.

• Unifying six verticals without flattening them. Marketplace, Jobs, Rent, Events, Freelance, and Services each have their own data shape, filter set, and listing flow. We designed a hub based layout where every vertical inherits the same shell, from feed and filters to profile, chat, and wallet, but plugs into its own category tree, form fields, and detail layout. Adding a new hub becomes a configuration exercise instead of a redesign.
• Keeping messaging instant without writing a chat server. Live conversations, typing indicators, read receipts, and offer and counter offer flows all run on Firestore subscriptions. Chat rooms are created the first time a buyer messages a seller and reused on every return visit, with commercial and personal threads separated by document type. The inbox stays in sync across tabs without any custom realtime code on our end.
• Onboarding sellers into Stripe Connect without breaking the flow. The signup flow creates both a Stripe customer and a Stripe Connect express account before the user lands on the hub. Identity verification is delegated to Stripe so sensitive documents never touch our servers, and the user returns to the platform with payouts already wired up.
• Shipping that does not require a logistics team. Package details, service selection, rate shopping, and label generation are wired through Shippo on a three step wizard. Sellers get real carrier rates, buyers get tracking, and the label itself is rendered as a QR code that can be scanned at drop off.
• Discovery that works in any language. Every listing is tagged with the languages the seller can transact in, and every user picks their preferred ones in step two of registration. Filters, sort, and the recommendation surface all respect those tags so a buyer searching in Spanish never sees a listing the seller cannot actually deliver in Spanish.

myTerrace is a single page application built on React 18 and Vite. Recoil drives the UI state, React Query owns the server cache, and the backend sits behind a REST API. Firestore handles the realtime layer for chat and presence, Stripe runs both customer payments and Connect payouts, and Shippo covers shipping rates and labels. The result is a fast, mobile first web app that behaves like a native marketplace across every hub.