MarketplaceCommunityCommerce2024
555 GroupGroup-buying + community commerce platform
- Timeline
- 6 months, idea to live marketplace
- Role
- Full-stack build + payments integration
- Year
- 2024
555.group
The problem
What we were solving
Group-buying mechanics live inside chat apps — a deal forms in a WeChat group, prices change as members join, and the merchant has no way to track quotas, payments or fulfilment. The deal cap is the smallest of the chat group's collective patience.
The solution
How we shipped it
555 Group makes the group-buying loop first-class. Merchants list a deal with a quota and a price-break ladder, buyers join with one tap, and the price drops live as the group fills — settling and locking the moment the window closes.
We built the buyer storefront, the merchant dashboard, payment splitting, and the community feed where regulars surface the deals worth jumping into.
Tech stack
What it’s built on
- Next.js
- React Native (companion app)
- Node.js
- PostgreSQL
- Stripe Connect
- WebSockets
- Tailwind
Outcome
What shipped, in numbers
Live
Price-break ladders update in real time
0 surfaces
Web + native mobile
0k+
Completed group deals
$0.0M+
GMV settled through the platform
Live preview
See it running
555.group
Open liveStatic preview — site blocks embedsVisit 555.group
More work
Other things we've shipped
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