SaaS2024–2025Live
Buxo
Multi-tenant SaaS with the auth and billing plumbing done properly.
- Role
- Full-stack
- Period
- 2024–2025
- Stack
- Next.jsNestJSTypeScriptPostgreSQL
The problem
Multi-tenancy is the part of SaaS that is cheap to fake and expensive to retrofit. Tenant isolation, billing state and permissions all had to be correct at the data layer from the start.
What I built
- 01Tenant scoping enforced in the data access layer so a query cannot accidentally cross tenants
- 02Authentication and session handling built against the billing state, so entitlement and identity stay in sync
- 03Next.js front end against a NestJS API, with the domain logic living server-side
Outcome
Live in production as a multi-tenant platform.
- Multi-tenant
- Tenancy
- Enforced at the data layer
- Isolation