Groomershop.pl sells pet-grooming supplies at real scale — tens of thousands of orders a month across their store and Allegro — but orders lived inside a Windows desktop ERP (Subiekt GT) and a patchwork of fragile sync scripts.
We're building their central order-management system on Open Mercato: one order cockpit with the full status workflow their operators actually use, fed by a bespoke, self-healing sync that mirrors the desktop ERP — a system with no clean API — into the OMS in near-real time, with live warehouse detail per order.
Tech wrap-up
- Self-healing Subiekt GT → OMS sync — read-only MS SQL over a private WireGuard tunnel, idempotent and resumable, converging millions of historical orders
- Near-real-time change feed: an ERP edit shows up in the OMS in ~30 seconds
- Order cockpit: status-tree filters, bulk actions, live WMS parcel and picking detail
- Playwright e2e suite driving the real sync nightly on CI; OpenTelemetry observability
- Runs on Hetzner Kubernetes (k3s), provisioned with OpenTofu
TypeScript
Next.js
PostgreSQLMS SQL
KubernetesTens of thousands of orders / month
What we brought
Services behind this project
Order management & ERP integration.
One cockpit for orders across your store, marketplaces and warehouse — synced with the ERP you already run, even one with no API.
Explore →Custom ERP & business systems.
One system to replace the spreadsheets and half-fitting SaaS your business runs on — built on a proven core, owned by you.
Explore →Backend & APIs.
Typed services, clean data models, and APIs built to scale without surprises.
Explore →Keep exploring
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