Retail POS Integrations

Internal project · Source not public

Period
May 2025 – present
My part
Built integrations into an existing system

Integration work inside an established point-of-sale system, connecting it to loyalty, voucher, event and delivery-tracking services.

Existing POS

  • Loyalty lookup and points
  • Voucher redemption
  • Promotions and unique codes
  • Event platform
  • Delivery issue tracking
Simplified flow drawn for this page. Not a screenshot.

What I worked on

  • Promotion and unique-code flow on the POS side
  • Sending POS transactions to an event platform
  • Loyalty member lookup and registration
  • Voucher validation and redemption paths
  • Loyalty point earning and earning reversal
  • Connections from the POS to issue-tracking and proof-of-delivery workflows

The POS existed and was stable before this work; I added integrations to it. The receiving APIs on the CRM and event-platform side were written by colleagues, and I coordinated with them on each integration.

Source

This is an internal project. Its source code, screens and data are not public, so this page describes my part in words and a simplified flow.

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