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Development of a Scalable B2B Car Auction Platform with Integrated Inspection and API Ecosystem
  1. case
  2. Development of a Scalable B2B Car Auction Platform with Integrated Inspection and API Ecosystem

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Development of a Scalable B2B Car Auction Platform with Integrated Inspection and API Ecosystem

implex.dev
Automotive

Challenges in Used Car Auctions and Manual Inspection Processes

Car dealers face inefficiencies in manual vehicle inspections (taking up to 12 hours), fragmented auction workflows, and lack of real-time bidding capabilities. Existing processes delay decision-making and reduce competitiveness in fast-paced auctions.

About the Client

A B2B startup connecting car dealers for used vehicle auctions across the USA, requiring a digital marketplace with advanced workflow automation

Objectives for the New Development Project

  • Launch a fully functional MVP within 4 months to secure Series A funding
  • Create a scalable platform supporting live/proxy bidding and post-auction negotiations
  • Automate vehicle inspection workflows to reduce processing time by 90%
  • Integrate vehicle data APIs (VIN, Carfax) for informed bidding decisions
  • Develop cross-platform applications (web + mobile) for dealers and inspectors

Core System Functionalities and Features

  • Live and proxy bidding with real-time updates via WebSockets
  • Mobile inspector app for 50+ parameter vehicle assessments
  • Post-auction counter-offer system
  • Automated deal-closing workflows
  • Integration with OBD systems and barcode readers
  • Saved searches and user notifications
  • Admin panel for auction management

Technology Stack Requirements

Node.js backend with stateless architecture
React-based web frontend
Cross-platform mobile development framework
WebSockets for real-time bidding
Cloud infrastructure for horizontal scaling

External System Integrations

  • VIN API for vehicle identification
  • Carfax vehicle history reports
  • Onboard Diagnostic (OBD) systems
  • Barcode/QR code scanning APIs

Non-Functional Requirements

  • Fault-tolerant architecture with zero downtime
  • Sub-15 minute inspection processing SLA
  • Support for 10,000+ concurrent auction participants
  • 99.9% system availability during peak auction hours
  • GDPR-compliant data handling

Expected Business Impact of the New Platform

The platform will reduce manual inspection time from 12 hours to 45 minutes (full inspection) and 15 minutes (brief check), enable 8x faster auction cycles, and provide data-driven decision support through integrated vehicle history reports. The solution's scalability will support nationwide expansion while maintaining Series A funding-ready technical documentation.

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