A Stripe integration expert builds payments the way they have to work in production — signature-verified, idempotent webhooks so you never double-charge; subscriptions with proration and dunning; async refunds and disputes; and Stripe Connect for marketplaces. We build new integrations and fix broken ones, in code you own.
Stripe integrationStripe Integration Expert
Payments That Don't Break
Checkout is the easy 20%. The other 80% — webhooks, subscriptions, refunds, disputes, Connect — is where money and data actually go wrong. We ship the whole thing correctly, and fix integrations where the hard parts were skipped.
Why Stripe integrations break after launch
A checkout button that charges a card is a demo. A payment system is what happens next: Stripe sends you a webhook to confirm the payment — and it deliberately sends that event more than once, and retries whenever your server does not answer cleanly.
If the handler is not idempotent and does not verify Stripe's signature, the same event gets processed twice: a customer is charged twice, an order is created twice, a subscription is provisioned twice, or access is granted to a payment that never cleared. None of this shows in testing with a single clean payment. All of it shows once real cards, failed payments, and refunds arrive.
This is exactly the layer AI coding tools and rushed builds skip — the checkout works, so it ships. We build payments the other way: Stripe as the source of truth, verified idempotent webhooks, and refunds and disputes handled asynchronously so your records stay correct no matter what the user does.
And it's not a rare edge case. Across B2B SaaS, close to a quarter of all churn is involuntary — failed payments, expired cards, and billing that quietly broke, from customers who wanted to keep paying (Recurly, 2025). Getting the webhook-and-subscription layer right is the difference between keeping that revenue and leaking it.
The full Stripe surface
Checkout & payments
One-time payments and Checkout done properly — with server-side confirmation, not trusting the browser redirect.
Reliable webhooks
Signature-verified, idempotent handlers that survive Stripe's deliberate duplicate deliveries and retries — the #1 cause of double charges.
Subscriptions & billing
Trials, upgrades/downgrades with proration, dunning for failed payments, cancellations — the full lifecycle, kept in sync with your database.
Refunds & disputes
Async refund handling, partial refunds, chargebacks and disputes that update your records reliably even if the user vanishes.
Stripe Connect
Marketplaces and payouts — connected accounts, application fees, payout timing, Radar for fraud. Built for a real multi-seller platform.
Fixing broken Stripe
Inherited a half-wired integration or an AI-built checkout that breaks under load? We find the gaps and close them.
How a Stripe engagement runs
New build or broken integration, the sequence is the same — and step 3 is the one rushed builds skip.
Map the money flows
Every state a payment or subscription can land in — trialing, active, past_due, canceled, refunded, disputed — and what your app must do at each. Most Stripe bugs are a state nobody planned for.
Build with Stripe as the source of truth
Your database updates from verified, idempotent webhook events — never from the browser redirect the user can close, refresh, or replay.
Test the failure paths, not just the happy one
Stripe test clocks to fast-forward a subscription through renewals and dunning, replayed and duplicated webhook events, and simulated declines, refunds, and disputes — before a real card is ever charged.
Go live with monitoring and a clean handoff
Alerts on webhook delivery and failed payments, a documented integration, and every key and line of code in your ownership.
We've shipped the hard parts, in production
Not a first Stripe project. We've built checkout with async refund handling and a full end-to-end webhook test suite, subscription billing, and a Stripe Connect marketplace with payouts, disputes, and Radar across a multi-app platform. When we say webhooks are the part that breaks, it's because we've fixed it.
Stripe Integration — FAQ
Get your Stripe done right
Building new, or fixing an integration that's charging wrong? A free 30-minute review tells you exactly what you need — before it costs you a customer.