SaaS Development
Multi-tenant SaaS platforms with subscription billing
Building a SaaS product? I build multi-tenant platforms with tenant isolation, subscription billing via Stripe or Mollie Connect, and all the standard infrastructure a commercial SaaS product needs - proven in Salonnare's production system.
The problem
Building SaaS isn't a standard webapp. Tenant isolation, subscription billing, feature flags, usage metering, onboarding, email delivery, fraud detection - everything has to be right from day one. Mistakes in tenant scoping are nearly impossible to fix later without losing customers.
What you get
Multi-tenant architecture
Database-level tenant isolation via a query wrapper that automatically adds tenant_id filters to every query. Unit-tested against cross-tenant leaks.
Subscription billing
Stripe Connect or Mollie Connect with Checkout Sessions, customer portal, dunning, plan changes, SEPA Direct Debit and annual billing.
Onboarding flow
Signup, email verification, trial period, feature tour and first-run state. Everything A/B-testable via feature flags.
Platform admin dashboard
Superadmin UI for tenant management, impersonation (with audit log), feature flags, announcements and maintenance windows.
Subdomain routing
Each tenant on its own subdomain (tenant.your-saas.com) with automatic wildcard SSL.
Custom domain support
Tenants can connect their own domain via CNAME or A-record. Automatic SSL provisioning via Let's Encrypt.
Tech stack
Process
Business model workshop → tenant model design → MVP scope → 2-weekly sprints → beta launch with 5–10 early adopters → feedback iterations → production launch.
Frequently asked questions
How long does a SaaS MVP take?
A functional MVP with multi-tenancy, auth, billing and one core feature: 8–12 weeks. A mature product like Salonnare (with POS, inventory, CRM, integrations) is 20+ weeks and continues to evolve.
Which billing provider should I pick?
Stripe Connect for international customers and modern payment methods. Mollie Connect for NL/BE with iDEAL and Bancontact. Both can coexist: Salonnare uses them for different tenant segments.
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