Auction & Bidding Platform

An eBay-style timed auction platform with live bid updates, proxy bidding, anti-sniping, and secure settlement between winning bidders and sellers.

Typically bought by: Auction houses going online, liquidators, collectors' communities, and charity auction organizers

Standard features — always included

• ✓Auction lots with images, condition notes, reserve price and starting bid
• ✓Timed auctions with scheduled start/end and staggered lot closings
• ✓Real-time bid updates without page refresh
• ✓Proxy (maximum) bidding with automatic increments
• ✓Anti-sniping soft-close extensions
• ✓Outbid notifications by email/push
• ✓Bidder registration with payment method verification
• ✓Buyer's premium and seller commission calculation
• ✓Winner checkout and settlement (provider-agnostic payments)
• ✓Watchlists and saved searches
• ✓Seller consignment portal for submitting lots
• ✓Admin panel: approve lots, manage auctions, resolve disputes
• ✓Bid history audit log per lot

Popular custom additions

Quoted per feature in the configurator — typically $50–$300 each.

• +Live-stream auctioneer mode with floor and online bids
• +Absentee/phone bid entry for staff
• +Buy-it-now alongside auction
• +Sealed-bid or Dutch auction formats
• +Invoicing with shipping quotes for won lots
• +Escrow settlement for high-value items
• +Authentication/appraisal workflow for luxury goods

Tech stack

Frontend

Next.js + Tailwind CSS

Backend

Node.js with WebSocket realtime bidding engine

Database

PostgreSQL (Neon) + Redis for live bid state

Integrations

Payment gateway with card verification/holds (Stripe/PayPal/other), Transactional email (Resend/SendGrid), Push notifications, Object storage for lot media (S3/R2)