Webhook handlers, idempotent
Retry-safe. Logged. Replay-able. Stripe events as the source of truth, your DB as the cache.
// stripe integration
Stripe done right the first time.
Stripe work for teams whose billing is the most important code in the system and the least tested. Subscriptions, marketplaces, payouts, the edge cases that bite at scale.
// where teams get stuck
Billing logic in three places, audit trail in zero.
- Webhooks that retry-storm because the handler isn't idempotent.
- Subscription state in your DB drifting from Stripe's source of truth.
- EU SCA flows that work for some banks and silently fail for others.
- Tax handling done by a spreadsheet someone updates quarterly.
// what's included
What ships.
Subscription state machine
Active, past_due, canceled, paused — every state mapped, every transition tested.
Stripe Tax wired in
Tax calculated where law requires it. Receipts and invoices stamped correctly.
SCA-compliant flows
PaymentIntents and SetupIntents used right. 3DS challenge handled across browsers.
Stripe Connect (if scope)
Marketplaces with payouts, KYC, transfers. Tested with real bank accounts.
// how we work
Three phases. Built to last.
01 · Calibrate
Audit current billing. Map every subscription state. Written scope.
02 · Build
Stripe sandbox first. Real cards next. Weekly demo of charge/refund flows.
03 · Hand off
Runbook for billing edge cases. Webhook replay tooling. Support window starts.
// common questions
What teams ask before signing.
We do all three. Most projects are subscriptions. Marketplaces (Connect) take longer because of KYC and bank verification.
SCA, PSD2, VAT — all handled. We work with EU stores and know the edge cases that catch Stripe-default integrations.
Yes. A post-launch support window is included. Optional ongoing care plans available after that — sized to your team, pause-able month to month.
Stripe's test mode, then real cards in a staging environment, then a small live cohort before full rollout. Migrations are the riskiest part — we plan them upfront.
Murcia, Spain. Remote across Europe, the UK, and North America.