Case study · Marketplace
Auction platform for classic cars
A marketplace for classic and special vehicles where dealers and private sellers list side by side — and the platform owns the contract, the payout and the warranty, not just the advert.
1,000+
Vehicles sold
500+
Trade partners
30,000
Visitors a day
2-sided
Rating system
The brief
Not mass market. High value, one of a kind.
Classic and special vehicles are not sold like used hatchbacks. Each car is unique, the sums are large, and buyer and seller usually meet for the first time through the platform. A listing board would not have been enough — the platform had to carry the money and the paperwork too.
Dealers and private sellers list side by side, under the same rules.
The chain the platform owns
- Listing and vehicle history lookup
- Bidding
- Contract
- Payment and payout
- Warranty, guarantee, buy-back
- Two-sided rating after handover
The interesting part
An outside party inside the chain of trust.
A buyer can order an independent inspection from a partner garage before bidding. The garage files the report through the platform, and the result is published straight onto the listing — visible to everyone, including the bidders the seller would rather not show it to. Paired with vehicle history lookup, it turns a stranger's claim into something checkable.
01 — Security
Real money, large amounts
Payments, payouts and contracts sit inside the platform, so account takeover or a manipulated bid is a financial event, not an inconvenience. Authorisation is checked server-side on every state change, never in the browser alone.
02 — Media
Very large uploads
A classic car listing carries dozens of high-resolution photographs and inspection documents. Upload, processing and delivery had to stay fast on ordinary connections while 30,000 visitors a day browse the results.
03 — Validation
A wrong bid is a legal event
Bids, contract data and vehicle details are validated in layers, because an incorrect entry here does not produce a cosmetic bug — it produces a dispute between two parties with a contract between them.
What it proves
Money, contracts and trust — under real traffic.
Thirty thousand visitors a day is not a launch-week number. It means the platform was operated, monitored and kept upright while strangers transacted on it in amounts that matter.
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