[ Case Study ]

Enterprise B2B SaaS Infrastructure

An open-source B2B SaaS template with multi-tenant auth, 5-tier RBAC, and subdomain isolation baked in. Uses asymmetric JWT's and Supabase Auth hooks to enforce hard security boundaries between tenants.

5-tier

Role Hierarchy Depth

<30 min

Deploy to Production

20+

Tables, Views & RLS Policies via Ready-to-Run SQL Migrations

[ Goals ]

What They Needed

  • Eliminate weeks of boilerplate setup every time a B2B SaaS project starts
  • Ship a production-ready multi-tenant architecture with zero security shortcuts
  • Support complex organizational hierarchies with fine-grained role-based access control
  • Provide a fully open-source reference implementation other developers can fork and extend
  • Achieve sub-30-minute time-to-production for new tenants via automated SQL migrations

[ Challenge ]

The Problem

Existing B2B templates gave you a starting point but fell short of production-ready. Developers wasted weeks on the same gaps every time: no domain isolation, RBAC bolted on as an afterthought, and email infrastructure rebuilt from scratch.

[ Approach ]

Our Playbook

We started with a Turborepo monorepo and four shared packages: authentication, RBAC logic, UI primitives, and database schemas. Every app in the workspace consumes the same packages instead of copy-pasting security patterns. The security model was designed first; the product was built on top of it.

[ Solution ]

What We Delivered

The template ships with a 5-tier RBAC hierarchy (Owner, Super Admin, Admin, Member, View-Only) and zero-config SQL migrations that stand up RLS policies, database functions, and email in under 30 minutes. A domain isolation engine enforces a hard security boundary between the marketing site and tenant workspaces using asymmetric JWT's and Supabase Auth hooks.

[ Results ]

The Impact

Other developers have forked the template to build their own multi-tenant platforms. The subdomain isolation pattern now runs in several of our own internal projects, and the 5-tier RBAC model has handled thousands of concurrent users in production without issues.

[ Tech Stack ]

How We Built It

Turborepo
Next.js 16
Supabase
Resend
Stripe
Tailwind CSS
Vitest
Sentry
Open SourceInfrastructureSecurityMulti-Tenancy

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