Device Buyback Platform

VendTonCell Trade-In Portal

Automating Device Buyback Quotation Pipelines Saving 25+ Administrative Hours Weekly

#Go#PHP#Wordpress#CanadaPost#WhatsAppAPI#MySQL
Client
E-Commerce Phone Buyback Retailer - Canada
Languages
Php, Javascript, Go
Fig. 1 — VendTonCell Trade-In Portal featured view (click to expand)
01

The Problem

Business Impact

Valuation, customer payouts, and shipping label generation were all handled manually, limiting processing scale and causing delays in customer payouts.

Constraints

Had to directly write updates to a shared Google Sheet used for accounting and inventory - zero disruption to existing bookkeeping workflows.

02

Technical Execution

Architectural Strategy

Architected a modular Go-based backend to manage the state flow of trade-ins, communicating via Webhooks with WordPress and Google Sheets APIs.

Depth of Execution

Implemented automated API shipping label generation with Canada Post, combined with Twilio-based WhatsApp alerts tracking every shipping status change.

03

Results

  • Admin labor reduced by 25+ hours per week through automation.
  • Average trade-in completion cycle shortened from 7 days to 3 days.
  • Zero valuation entry discrepancies reported since launch.
Future Proofing

Configured a microservice architecture in Go, meaning high-traffic quote spikes do not overload the primary WordPress sales front.