Build a SaaS Product
Multi-Tenant, Done Right
Most SaaS products don't fail on features — they fail on the parts customers never see until they break: one tenant's data leaking into another's, billing that double-charges, no real roles or permissions. We build multi-tenant SaaS with those hard parts done right from day one — fixed price, shipped in weeks.
Multi-tenant SaaS built right means many customers share one application and one database, yet each one's data is completely walled off from the rest — enforced at the database with Row Level Security, not just hidden in the UI. The two places SaaS quietly break are tenant isolation (one customer seeing another's data) and billing (webhooks that double-charge or leave your database out of sync with Stripe). We get both right from day one, plus auth, roles, and an architecture that scales — and hand you code you own.
The parts that make a SaaS survive real customers
Multi-tenant architecture & tenant isolation
One application, one database, many customers — with each tenant's data completely walled off, so no one ever sees another's.
Auth, roles & permissions
Sign-in, sessions, org/team membership, and real role-based permissions — so owners, admins, and members can do exactly what they should.
Subscriptions & billing
Stripe subscriptions done right — plans, upgrades and downgrades, idempotent webhooks, failed payments, and dunning that don't double-charge.
Data model & Row Level Security
A Postgres schema that stays correct as you grow, with RLS enforcing the tenant boundary at the database — not just hidden in the UI.
Admin & analytics
The internal surface a real SaaS needs — user and tenant management, usage visibility, and the reporting your team actually uses.
Scale & reliability
Built to hold up as customers and data grow — sensible indexes, background jobs, and an architecture that won't need rebuilding at your first traction.
We ship real SaaS, with real billing
ProposalGenie is a live AI SaaS running real Stripe subscription billing in production — multi-tenant, with paying customers. We build the whole stack: the billing layer, the Postgres foundation with Row Level Security, and, when you're starting out, a focused MVP first. Tenant isolation and billing edge cases are things we've shipped, not read about.
SaaS Development — FAQ
Build your SaaS on a foundation that scales
Starting a new product or extending one that's outgrowing its first build — a free 30-minute call tells you exactly what it takes to get tenant isolation, roles, and billing right, from engineers who run SaaS in production.