E-commerce Order-to-Invoice Workflow Automation

Client: Multi-Store E-commerce Consignor (Shipster FR)

Tools Used: Google Sheets • Google Apps Script

The client managed several online storefronts, selling across different regions and currencies. Each week, they exported raw order data and manually created invoices — a time-consuming process complicated by custom shipping rules, multi-currency pricing, and store-specific logic. This manual workflow was not scalable and often led to inconsistencies or errors in invoices.

I developed an automated Google Sheets-based invoicing system that transformed raw Shopify order exports into ready-to-send invoices. The workflow:

Parsed and structured order data using Google Apps Script

Applied client-specific and product-specific rules for accurate shipping calculations

Generated invoice-ready sheets with options to export as PDF or XLS

Ensured currency and tax consistency across multiple storefronts

This allowed the client to manage all stores from a single centralized dashboard, removing the need for manual data handling.

6 hours saved weekly in manual invoice creation

Zero calculation errors across complex shipping rules

Scalable system that adapts to new stores and rules with minimal setup

The automated workflow turned a previously error-prone, manual invoicing task into a fully reliable, data-driven system. The client could now focus on order fulfillment and business growth instead of repetitive spreadsheet maintenance — achieving greater accuracy and efficiency across their entire e-commerce operation.