The challenge
A DTC brand selling across Shopify, Amazon, eBay, Walmart Marketplace, and their own wholesale portal was drowning in manual work. Orders were processed by hand, inventory was synced via spreadsheets updated twice daily, and customer service reps were copy-pasting tracking numbers into 3 different systems. Overselling was a weekly crisis.
What we built
We built a centralized automation layer connecting all 5 sales channels into one real-time system.
- 01
Real-Time Inventory Sync with N8N
Built N8N workflows that listen for inventory changes across all platforms. When a sale happens on Amazon, inventory updates on Shopify, eBay, and Walmart within 30 seconds — eliminating overselling entirely.
- 02
Order Processing Pipeline in Zapier
Created a Zapier multi-step automation that captures orders from all channels, normalizes the data, creates fulfillment tickets in their warehouse system, and sends branded order confirmations to customers — all automatically.
- 03
Customer Data Unification with Supabase
Deployed a Supabase database as the central customer data hub. Every order, return, and support interaction is linked to a single customer profile — giving the team a complete view across all platforms.
- 04
Automated Reporting with Python
Wrote Python scripts that pull daily sales, inventory, and margin data from all channels and generate a morning Slack report with KPIs, low-stock alerts, and revenue breakdown by platform.
Built with
Delivered in 4 weeks
N8N
Inventory sync & complex workflows
Zapier
Order processing automation
Supabase
Customer data hub & real-time DB
Python
Data processing & reporting
Shopify API
Primary storefront integration
Amazon SP-API
Marketplace integration
Slack
Alerts & daily reports
The outcome
The ops team reclaimed 40+ hours per week. Order errors dropped by 94%. They scaled from 500 to 2,000 orders/month without hiring. The CEO said it felt like adding 3 full-time employees overnight.
- Saved Per Week
- 40hrs
- Order Errors
- -94%
- Order Volume Capacity
- 4x
- Inventory Sync Time
- 30sec
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