Cashify POS — Multi‑Tenant SaaS

Overview

Multi‑tenant POS sold by subscription plans: stock and transfers, quotations, sale and purchase returns, multi‑currency and multi‑language, plus a full mobile API.

01The challenge

Selling the system by subscription changes the architecture at the root. One store’s data must never touch another’s — not through a forgotten filter, not through a direct query — and the plan has to genuinely gate what a subscriber can do, rather than being a label on a pricing page.

At the same time, onboarding a new subscriber has to be instant: database, domain, seed data and an admin account, with no manual step.

02What we built

We used database-per-tenant isolation via stancl/tenancy, so separation is structural rather than logical: no query can cross a tenant boundary even if a filter is forgotten. Routes are split into tenant routes and platform-admin routes, each with its own middleware.

Plans are modelled as features attached to a plan and checked at the point of use, not only at the point of display. New-subscriber signup runs a provisioning path that creates the database, domain and seed data in a single step.

The product itself was built API-first over a repository pattern, so every dashboard screen and every app screen consumes the same endpoints — a feature is built once and reaches both.

03The outcome

The platform became sellable with no per-customer operational cost: a subscription ends in a working store within seconds instead of a manually deployed copy per subscriber.

Multi-currency and multi-language are built into the core, so the same product sells into more than one market without a separate build per market.