№ 05 / Service
Payment integration
Checkout, subscriptions, marketplace payouts, and cross-border billing — implemented once, correctly, with the compliance edge cases handled.
Typical engagement — 2–8 weeks. PCI scope reduction, 3-D Secure, SCA, tax calculation, and reconciliation tooling included.
// Deliverables
- Checkout & subscription flows
- Marketplace & split payouts
- Cross-border & multi-currency billing
- Invoicing, tax, VAT & e-invoice
- Webhook reconciliation & dashboards
// Stack
- Stripe · Adyen · Paddle
- Iyzico · PayTR · Param
- RevenueCat · Lemon Squeezy
- Stripe Tax · Avalara
- Webhooks · Idempotency keys