05 Platform
Stripe & Billing Systems
We build subscription, usage-based and marketplace billing on Stripe and comparable providers (checkout, webhooks, entitlements, dunning and reconciliation) for the SaaS and product agencies where a billing bug is the one kind of bug a client cannot afford.
Billing is the one part of a product where a bug is indistinguishable from theft. Missed webhooks, mishandled proration and unreconciled subscription state do not throw errors. They quietly undercharge, overcharge, or leave cancelled accounts with full access for months, and nobody finds out until a client reconciles their revenue against the product and the numbers do not match.
- Who it is for
- SaaS and product agencies building or maintaining a revenue-generating product for a client.
- Typical timeline
- A standard subscription implementation runs two to four weeks. Metered billing, Connect marketplaces and migrations from an existing system take longer.
- Further reading
- Stripe billing implementation checklist for SaaS teams
Included
- Stripe Checkout and customer portal
- Plans, tiers and entitlement mapping
- Signature-verified, idempotent webhook handling
- Upgrade, downgrade and proration logic
- Usage-based and metered billing
- Dunning, failed payments and grace periods
- Marketplace splits with Stripe Connect
- Multi-tenant billing architecture
- Paddle, Lemon Squeezy and PayPal as alternatives or additions to Stripe
- Reconciliation between processor state and application access
Not included
- Tax, accounting and financial advice
- PCI compliance certification
- Migrations away from Stripe to another processor
- Chargeback and dispute operations
Why this beats the alternatives
- Against hiring
- Billing is a specialist problem a client hits once. Bringing in someone who has shipped it is faster and safer than a generalist learning Stripe's edge cases against live revenue.
- Against a marketplace freelancer
- The webhook and reconciliation layer is where marketplace billing work usually stops, and it is exactly where revenue is lost.
- Against an offshore shop
- One engineer holding the whole billing lifecycle is how the subtle proration and dunning cases get caught before your client's customers find them.
Send us the scope.
Describe what you sold and when it is due. You get a scoped quote within 24 hours of the call, and the first milestone is risk-free.