Multi-tenant SaaS API
Don't just learn backend — ship a billable API.
Goal
Build a production-shaped REST API with auth, multi-tenant data isolation, rate limits, and usage-based billing hooks.
Skills it builds
- REST design & versioning
- OAuth2 / token auth
- Postgres schema & migrations
- Rate limiting & quotas
- Observability & tests
Sprint breakdown
- 1
Sprint 1 · Foundation
Project scaffold, Postgres, a health check, and one resource with full CRUD + tests.
- 2
Sprint 2 · Auth & tenants
Token auth, per-tenant row isolation, and role-based access control.
- 3
Sprint 3 · Limits & billing
Rate limiting, a daily plan quota (not cumulative), and usage metering for billing.
- 4
Sprint 4 · Ship it
Dockerize, add structured logs + traces, a CI pipeline, and deploy behind a reverse proxy.