MeowBaby Command Center
Multi-company ERP command center: KSeF v2 e-invoicing with ECDSA/XAdES signing (433 invoices processed in production), Mirakl/Amazon/Allegro reconciliation, MT940 multi-bank import, and warehouse tablet app.
// screenshot authorization [PENDING operator] - architecture diagram shown
// delivery facts
433
KSeF invoices in production
Backfilled and processed via ECDSA/XAdES batch module
3
Channels reconciled
Mirakl, Amazon, Allegro - automated per settlement period
Multi-company ERP
Architecture
Isolated per legal entity; single operational dashboard across all
Internal / live
Status
Private ERP - screenshot auth [PENDING operator]
The challenge
A multi-company e-commerce operation spanning several legal entities and three major marketplaces needed a unified operational system to handle Polish KSeF e-invoicing, multi-channel reconciliation, bank statement matching, and warehouse management - without stitching together five separate SaaS subscriptions.
- 1
Polish KSeF v2 e-invoicing requires ECDSA key management, XAdES digital signature construction, and a specific XML schema - off-the-shelf tools either did not support it or required expensive integrator fees
- 2
Reconciling settlements from Mirakl, Amazon, and Allegro across multiple seller accounts and legal entities was a weekly manual process prone to error
- 3
Warehouse management on the floor required a tablet-optimised interface that existing WMS tools did not offer at an acceptable cost-to-complexity ratio
- 4
Backfilling 433 historical invoices into KSeF required batch processing with reliable retry logic and audit logging - not possible through a manual UI
How it was built
Custom multi-company ERP on Next.js and Supabase with a KSeF v2 integration module (ECDSA/XAdES), marketplace reconciliation adapters, MT940 multi-bank parser, tablet-first warehouse module, and a central operational dashboard.
KSeF v2 module: ECDSA private key management per legal entity, XAdES-BES signature construction in TypeScript, XML invoice serialisation to the KSeF schema, and async batch submission with per-invoice retry and audit log
433 historical invoices backfilled into KSeF production environment via the batch module - each invoice verified against KSeF response, failures re-queued automatically
Marketplace reconciliation adapters for Mirakl, Amazon, and Allegro normalise channel-specific settlement schemas; automated matching links settlement lines to commission invoices and bank payouts
Warehouse tablet app built as a progressive web app with offline-first interactions; touch targets, scan-friendly layouts, and minimal network dependency for floor use
Claude API provides an AI insight layer on top of the central dashboard: anomaly detection on settlement discrepancies, pattern matching on recurring reconciliation failures, and natural-language query over operational data
What shipped
Production multi-company ERP running internally - 433 KSeF invoices processed, three-channel marketplace reconciliation automated, multi-bank MT940 import operational, and warehouse tablet app deployed to the floor.
// full stack
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