Stock, orders and fulfillments move between Shopify and Fiftify with no manual exports: webhooks, an idempotent queue, and hourly full-state reconciliation.
inventory sync latency, down from a once-a-day CSV export; drift between Shopify and the warehouse stays under 0.3%
The Shopify store and the Fiftify warehouse lived apart: stock was pushed across by CSV export once a day. A lot fits into a day: overselling on bestsellers, cancellations on orders already paid for, manual stock edits that the next import silently overwrote.
They needed a sync that keeps both systems in one state and doesn't fall over when Shopify redelivers the same webhook while the warehouse API happens to be down.
We built an integration service in TypeScript. Shopify webhooks (orders, fulfillments, inventory) and Fiftify events land in a BullMQ queue; every event is idempotent by key, so redeliveries are dropped instead of double-counting stock.
Inventory levels go to Shopify through the Admin GraphQL API in rate-limit-aware batches, orders go to Fiftify for picking, and tracking numbers come back to Shopify and the customer.
On top of that runs an hourly full-state reconciliation: anything that has drifted lands in a report with the reason attached, rather than being quietly overwritten. Deployed in Docker, with metrics and alerts on queue lag.
Tell us about the project and we'll come back with an estimate.
