Live real-estate auctions that hold up under pressure

Context

GIMS and Horizon sell property in Morocco, including through live online auctions where every second counts. I joined as UX architect for two months, working directly with one back-end systems engineer. My job was to design the live bidding experience and the screens around it, from registration through to settlement.

The problem

In a live auction, a slow screen costs money. On the old platform, bid confirmations lagged, the price feed was hard to read, and bidder confidence dropped as soon as traffic peaked. When a confirmation took longer than about 800ms, bidders assumed the bid had failed and placed it again. Those duplicate bids created legal problems for the auction house.

Approach

1. 01

   Mapped the full bidder journey: research, registration, live bidding and settlement

2. 02

   Traced duplicate bids back to confirmation delays above 800ms

3. 03

   Designed around a WebSocket-first model so the interface reacts the moment the server does

4. 04

   Built a high-contrast, information-dense layout that clearly separates live and upcoming auctions

5. 05

   Added a persistent bid ticker and instant confirmation states for every bid

6. 06

   Designed a "panic mode" fallback so bidders can still place a bid if their connection drops

Outcome

• →Zero duplicate bid incidents after launch
• →Perceived bid confirmation under 200ms on average
• →Bidder confidence in post-session surveys rose from 62% to 91%
• →340 concurrent bidders handled with no slowdown in the interface

Reflection

“The main lesson: in a live auction, how fast the screen responds decides whether people trust it. A bidder who is not sure a bid landed will click again. So I designed for the busiest minute and the weakest connection instead of the ideal demo, and that is what made the platform feel safe to use with real money on the line.”