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Automotive

Custom Auction Aggregation Solution for Bidding and Purchasing Vehicles in Europe

CarPLATZ approached us to unify dozens of fragmented European vehicle auctions into one searchable, real-time bidding experience — so dealerships and individuals can compare, bid and buy without juggling tabs.

CarPLATZ auction interface preview

Industries

AutomotiveMarketplaces

Services

Custom Web App DevelopmentReal-time Data PipelinesUI / UX Design
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The Challenge

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean commodo ligula eget dolor. Auction houses across Europe ran on incompatible feeds, mismatched schemas and unpredictable timing. Buyers had to manage dozens of accounts and missed lots routinely. The product had to consolidate everything into a single live inventory with sub-second update guarantees.

Placeholder banner — aggregated auction dashboard

Our Approach

We worked in four overlapping tracks to ship value fast while keeping the system observable and easy to evolve.

  1. 01

    Research

    Interviewed bidders and ops teams to map the existing flows and pain points.

  2. 02

    Design

    Designed an inventory-first UI that puts bid timer, photos and history side-by-side.

  3. 03

    Build

    Built an ingestion pipeline that normalises feeds from 30+ auction sources into one schema.

  4. 04

    Refine

    Instrumented user sessions to find friction in the bid → checkout funnel and iterated weekly.

Placeholder — design exploration
Placeholder — interface mockup
Placeholder — impact illustration

The Impact

Within six months the platform replaced six separate workflows and became the team's daily driver.

  • Unified inventory

    30+ auction sources flow into a single searchable feed.

  • Sub-second updates

    Live bid state pushed to every connected client without polling.

  • Audit-grade history

    Every bid, cancel and award is immutable and reviewable.

  • Mobile parity

    Bidders place winning offers from anywhere with full feature parity.

Project Results

1M+

Vehicles indexed across European auction houses

24/7

Live bidding without scheduled downtime

Faster from listing to confirmed bid

Tech Stack

The technologies and tools we used to build this project.

Frontend

  • Svelte
  • TypeScript
  • Tailwind CSS
  • Vite

Backend

  • Node.js
  • Fastify
  • PostgreSQL
  • Redis

Data & Search

  • ClickHouse
  • Elasticsearch
  • Kafka

Infrastructure

  • AWS
  • Docker
  • Terraform
  • GitHub Actions

Project Review

“Jepanana shipped what felt like an impossible integration in a quarter. We bid more, manage less, and our team finally trusts the data.”

Placeholder Name

COO, CarPLATZ

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