Engineering · SaaS Systems
Multi-tenant SaaS development that scales from day one
Multi-tenant SaaS architecture with billing, RBAC, and usage limits modeled correctly — so you grow without rewriting.
Timeline
10–20 weeks
Engagement
Senior squad · Fixed scope
Why teams pick this engagement
What you get out of it
- Tenants modeled correctly the first time — no rewrite at $1M ARR
- Stripe billing wired end-to-end: plans, seats, metered usage, dunning
- Admin console + customer portal as two surfaces, one design system
- Audit logs, SSO, and encryption ready when enterprise asks
Overview
What this service is
We've shipped enough SaaS systems to know which decisions you'll regret. We help you skip them.
Deliverables
Multi-tenant data model
Org-scoped, row-level, audit-ready.
Stripe billing integration
Subscriptions, metered usage, invoices, dunning.
Admin + customer portal
Two distinct surfaces, one shared design system.
Feature flags + experiments
Ship safely, measure what matters.
SOC 2-ready scaffolding
Audit logs, access reviews, encryption at rest.
How it runs
Four phases. Production from day one.
Model
Tenants, roles, plans, limits — written down before code.
Build
Vertical slices, end to end, with billing wired early.
Operate
Internal tools so support and ops aren't blocked on engineering.
Scale
Backpressure, caching, queues — added when needed, not before.
Proof
A recent engagement
What this service looks like in production.
Healthtech Analytics Company
Turned an internal tool into a multi-tenant SaaS
Single-tenant to multi-tenant SaaS, with billing, audit logs, and SSO.
8
New paying tenants in first 6 weeks
$320k
ARR added in first quarter
8
New paying tenants in first 6 weeks
$320k
ARR added in first quarter
100%
Existing customers retained through migration
14 wk
From scoping to public launch
FAQ
SaaS Systems — common questions
- For most SaaS products under ~5,000 tenants the right answer is a pooled Postgres database with a `tenant_id` column on every table and row-level security policies enforcing isolation. It's simple to operate, easy to migrate, and gives you isolation guarantees you can show an auditor.
- We model billing as a first-class domain, not a webhook handler. Plans, seats, and metered usage are tracked in your database, reconciled with Stripe nightly, and exposed through a single billing service so your product code doesn't deal with Stripe primitives directly.
- We can ship the technical controls SOC 2 requires — audit logging, access reviews, encryption at rest, secrets management, change tracking — as scaffolding inside the product. The compliance program (policies, vendor reviews, training) we partner with Vanta or Drata for.
- By designing the tenant boundary, the audit boundary, and the billing boundary on day one. The mistakes that force rewrites are almost always: assuming single-tenant in the data model, hard-coding org logic in the application layer, and treating billing as bolt-on. We don't do those.
Ready to ship saas systems?
Tell us a bit about the project. We'll come back with scope, timeline, and a fixed price within one business day.