Case study · SaaS · Infrastructure
Multi-tenant platform
One codebase serving hundreds of businesses, each with its own data walled off. New customers are onboarded in minutes instead of a week of setup.
- Role
- Backend lead
- Timeframe
- 2023 – 2024
- Stack
- FastAPI, PostgreSQL, Redis, AWS
The short version
The problem
Each new customer needed a week of manual setup and its own deployment.
What I did
Moved every customer onto one codebase with enforced per-tenant data isolation.
The result
Onboarding takes minutes and no tenant has ever seen another's data.
340tenants
Businesses on one codebase
Production2024
Active tenant count
0incidents
Cross-tenant data exposures
Production18 months
Incident log + RLS audit
Technical deep dive
For engineers: constraints, architecture, trade-offs and what I'd do differently.
01 · Context and constraints
Placeholder. Replace with the real case study.