Project description
We are launching an auction marketplace and looking for a developer to build a full-featured bidding engine from scratch. Sellers create lots with photos, description, starting price, optional reserve price and end time; buyers place competitive bids in real time and see the price rise without page refresh. The core of the project is a live bidding cycle: each new bid must instantly appear on all open screens, the countdown timer must run synchronized to the second, and the current leader and bid history must remain correct even when dozens of people are competing for a single lot simultaneously.
Proxy bidding is required: a buyer sets a maximum amount and the system automatically increases their bid by the minimum increment just enough to stay ahead. Anti-snipe rules are mandatory: any bid in the final seconds extends the timer for a short interval so that a bid at the very last moment doesn't unfairly take away the lot. Additionally, email and push notifications are needed about being outbid, winning, upcoming closure and payment, as well as separate seller and buyer accounts with clear panels of active lots, favorites and history.
Payments must be integrated so that after the auction closes the winner pays for the lot and the seller receives payment, with correct accounting of commissions, invoices and dispute scenarios. Describe your experience with real-time systems and how you guarantee that no valid bid will be lost.
Key scope of work:
— lots, timers, proxy and auto-bids;
— time extension for snipe protection;
— notifications, payments and payouts;
— seller and buyer accounts with panels.
Proxy bidding is required: a buyer sets a maximum amount and the system automatically increases their bid by the minimum increment just enough to stay ahead. Anti-snipe rules are mandatory: any bid in the final seconds extends the timer for a short interval so that a bid at the very last moment doesn't unfairly take away the lot. Additionally, email and push notifications are needed about being outbid, winning, upcoming closure and payment, as well as separate seller and buyer accounts with clear panels of active lots, favorites and history.
Payments must be integrated so that after the auction closes the winner pays for the lot and the seller receives payment, with correct accounting of commissions, invoices and dispute scenarios. Describe your experience with real-time systems and how you guarantee that no valid bid will be lost.
Key scope of work:
— lots, timers, proxy and auto-bids;
— time extension for snipe protection;
— notifications, payments and payouts;
— seller and buyer accounts with panels.
Web programming Cash, Bank transfer
