Sentra — CoreOS

A 24-module business OS with a double-entry general ledger.

Internal project

The problem

Small businesses run accounting, inventory, CRM, manufacturing and payroll across separate tools that disagree with each other. Consolidating them means the money has to be provably correct — an ERP that is approximately right is worse than the spreadsheets it replaced.

What we built

Double-entry general ledger with GST-aware invoicing
Event-sourced inventory across multiple warehouses
Manufacturing bills of materials, POS, payroll and earned-wage access
Money handled in integer minor units through deterministic, unit-tested engines
Append-only audit log, so any figure can be traced back to its entries
An AI layer that explains figures but never computes them

Something like this?

Tell us what it has to do and who has to use it. You get a written scope, a fixed quote, and an honest note about anything we think you should not build.

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