SaaS Products Built for Growth, Not Just Launch
Auth, billing, multi-tenancy, onboarding — the four things that make or break a SaaS product. I've built all of them in production, and I know which decisions at MVP stage you'll regret at 10,000 users.
- Multi-tenant architecture designed before it's needed
- Stripe billing — subscriptions, trials, usage-based, dunning
- Auth with SSO, RBAC, and the admin impersonation flow
- MVP to first paying user in under four weeks
No commitment to enquire · Reply within 24 hours · UK, US, Canada & worldwide
30+
Production SaaS applications shipped — from MVP to paying customers at scale
4+
Years building multi-tenant SaaS products for FinTech, HR, and enterprise software companies
100%
Stripe integration success rate — subscriptions, trials, metered billing, and webhook reliability
<4wk
Typical SaaS MVP timeline — auth, billing, dashboard, and first paying user in under four weeks
SaaS Expertise
What I Build
The full SaaS stack — from database schema to marketing site. Every layer your product needs to acquire, retain, and monetise users.
Multi-Tenant Architecture
Row-level security with Supabase, organisation/workspace data isolation, role-based permissions per tenant, and invitation flows. The data model that lets you onboard thousands of companies without a rewrite.
Stripe Billing & Subscriptions
Plans, trials, seat-based pricing, usage-based billing, upgrade and downgrade flows, dunning management, customer portal, and webhook-driven subscription state. Every Stripe edge case handled.
Authentication & Auth Flows
Supabase Auth or NextAuth — email/password, Google OAuth, magic links, and SSO. Session management, protected routes, role checks, and the admin impersonation flow every SaaS team eventually needs.
Onboarding & Activation Flows
The gap between signup and activation is where SaaS products lose users. I build onboarding wizards, empty states, in-app guidance, and the metrics that tell you where drop-off happens.
Admin Dashboards
The dashboard your ops team needs to manage users, view subscription status, impersonate accounts, manage feature flags, and handle support requests — without touching the database directly.
SaaS Marketing Sites
SEO-first Next.js marketing sites with pricing pages, feature comparisons, social proof, and conversion-optimised CTAs. Built to rank and built to convert — not just to look good.
Why Hire Me
The Difference Between a SaaS Developer and an App Developer
Building features is easy. Building the subscription model, the tenant isolation, and the billing edge cases that keep a SaaS business alive — that's the hard part.
Multi-tenancy designed before it's needed
Adding multi-tenancy to a single-tenant codebase is a rewrite. I design the tenant isolation model in the schema from day one — so scaling to enterprise accounts doesn't require starting over.
Stripe handled at the webhook level, not just the checkout
Checkout is 10% of Stripe. The real work is webhook idempotency, failed payment recovery, subscription state sync, and proration on plan changes. I've handled all of it in production.
MVPs that aren't throwaway
The architecture decisions you make at MVP stage are the ones you'll live with at 10,000 users. I build MVPs that are fast to ship AND structured to grow — without a full rewrite at Series A.
Full-stack ownership, one point of contact
Database schema, API layer, frontend, Stripe integration, and deployment — all owned by one engineer. No coordination overhead, no hand-off gaps, no finger-pointing when something breaks.
Common Questions
Before You Reach Out
The questions every client asks — answered honestly.
How much does building a SaaS product cost?
An MVP with auth, Stripe billing, a core feature, and admin dashboard typically runs 4–8 weeks at a fixed price. I scope it from your brief — no verbal estimates, written proposal within 24 hours.
How long does it take to build a SaaS MVP?
Three to six weeks for a focused MVP — auth, billing, one core workflow, and the infrastructure to support it. The scope goes in the proposal before work starts. No surprises mid-engagement.
Can you build on top of an existing SaaS codebase?
Yes. Share the repo and I'll assess the architecture, identify what needs changing, and scope the work honestly. I won't recommend a rewrite unless it's genuinely the right call.
Do you handle Stripe integration end-to-end?
Yes — checkout, subscriptions, trials, usage-based billing, dunning, customer portal, and webhook handling with idempotency. Stripe is complex at the edges. I've handled the edges in production.
Which stack do you use for SaaS products?
Next.js App Router for the frontend, Supabase for auth and database (with PostgreSQL RLS for multi-tenancy), Stripe for billing, and Vercel for deployment. For larger clients: Node.js/NestJS API and AWS.
Do you build the marketing site too, or just the application?
Both. A SaaS product needs a marketing site that ranks and converts — not just an app. I build the full package: SEO-first Next.js marketing site, pricing page, and the product itself.
Related Expertise
Other Ways I Can Help
Looking for a different speciality? Here are the most relevant pages.
Next.js Developer
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React Developer
Production-grade React UIs with TypeScript strict, Redux Toolkit, and 40% performance gains
PostgreSQL Developer
Schema design, query optimisation, RLS, Supabase, and zero-downtime migrations
Full-Stack Developer
React, Next.js, NestJS, PostgreSQL & AWS — one engineer, full ownership from database to deploy
Ready to hire a SaaS developer who's been to production?
Send your brief. I'll reply within 24 hours with a written proposal — scope, timeline, and price. No discovery calls until you've seen the numbers.